Интегральные схемы

PIC18F66J60T-I/PT

PIC18F66J60T-I/PT - 8-bit MCU, 64KB Flash, Ethernet, 64-TQFP | Microchip

The Microchip PIC18F66J60T-I/PT is an 8-bit PIC18 microcontroller featuring an integrated 10Mbps Ethernet MAC+PHY peripheral, 64KB of Flash program memory (32K x 16), and 3808 bytes of RAM. The device operates from a 2.0V to 3.6V core supply (with 4.2V to 5.5V I/O tolerance on selected pins via internal charge-pump regulation), at a maximum clock rate of 41.667MHz (10MIPS), and is housed in a 64-pin TQFP (10x10 mm) package. It is part of the PIC18F "J" family which combines single-cycle instruction execution with on-chip networking peripherals. A microcontroller (MCU) is a single-chip processing unit integrating a CPU core, program memory (Flash), data memory (RAM), and configurable peripherals. The PIC18F family uses a Harvard RISC core, meaning separate program and data buses enable single-cycle instruction fetches even when accessing both buses concurrently. The hierarchy is: PIC18 microcontroller -> 8-bit MCU -> embedded controller -> semiconductor device. The 66J60 variant specifically adds an integrated 10/100 Ethernet MAC and 10BASE-T PHY, eliminating the need for an external network controller in connected embedded designs. Key features include 11 channels of 10-bit ADC, two USART modules, one MSSP (SPI/I2C) module, two comparators, a 16-bit timer/counter, three 8-bit timers, and the integrated Ethernet MAC/PHY with on-chip buffers. The device also has a nanoWatt power-managed operating mode for battery-friendly sleep states, and supports In-Circuit Serial Programming (ICSP) and In-Circuit Debug (ICD) for development. The on-chip 10BASE-T Ethernet peripheral directly drives the PHY magnetics and RJ45 connector, with internal DMA-driven packet buffers configurable for up to 8KB of descriptor memory. The 41.667MHz Fosc produces an industry-standard 25MHz clock output for Ethernet clocking. The nanosecond-level interrupt latency of the PIC18 core suits deterministic industrial-control applications where predictable response times matter. Typical applications include industrial automation nodes, building automation controllers, remote monitoring systems, low-cost web-enabled sensor hubs, and IP-connected HVAC equipment. The integrated Ethernet makes the 66J60 well-suited to applications where USB or Wi-Fi is over-spec but the absence of a separate network processor reduces board area and BOM cost. Operating voltage of 2.0V to 3.6V lets it run from a 3.3V rail or 2xAA cells with a boost converter. When designing with this part, allocate 3.3V rail decoupling close to every power pin and route the Ethernet differential pairs (TPTXP/TPTXN, TPRXP/TPRXN) as a 100-ohm differential pair matched to within 5mm; traces longer than 25mm require explicit magnetics footprint review per IEEE 802.3. Place the 25MHz oscillator within 5mm of the OSC1/OSC2 pins to minimize EMI. This page aggregates distributor pricing, drop-in alternatives, and field-tested design notes not consolidated in any single Microchip datasheet, helping engineers compare supply options and avoid common pitfalls before the prototype stage.

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PIC18F66J65-I/PT

PIC18F66J65-I/PT - 8-bit 41.667MHz 96KB Flash MCU w/ Ethernet | Microchip

The Microchip Technology PIC18F66J65-I/PT is an 8-bit PIC18J-series RISC microcontroller integrating a 10Mbps Ethernet MAC+PHY, 96KB of Flash program memory, and 3808 bytes of data RAM, housed in a 64-pin TQFP package (10x10 mm). It executes instructions at 41.667 MHz (16 MIPS, 200 ns per instruction) and operates from a 4.2V to 5.5V supply. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), and a set of programmable peripherals into one IC. Within the semiconductor hierarchy, MCUs belong to the broader class of microcontrollers -> embedded processors -> digital ICs. The PIC18F family uses Microchip's enhanced Harvard RISC architecture with separate program and data buses, allowing simultaneous instruction fetch and operand access. Key features of this part include an integrated IEEE 802.3-compatible 10BASE-T Ethernet controller with 8KB Ethernet buffer, support for unicast/multicast/broadcast packet filtering, programmable wake-on-LAN for Magic Packet and pattern match, two MSSP modules (I2C/SPI), two enhanced USARTs, a 10-bit ADC with up to 16 channels, and 54 programmable digital I/O lines. The 64-pin TQFP provides generous I/O count in a moderate footprint. The integrated 10BASE-T PHY eliminates the need for an external Ethernet transceiver, which is rare in 8-bit MCUs. The PIC18J core adds hardware multiply and a 16-bit wide instruction word, giving the family 16 MIPS throughput at 41.667 MHz. This combination suits single-chip networked nodes where BOM cost and board area must be minimized. Typical applications include industrial Ethernet sensor nodes, building-automation controllers, remote-monitoring terminals, BACnet/Modbus gateways, and embedded web servers. Designers should budget for the 4.2V minimum supply (this is a 5V-only J-series part, not 3.3V-tolerant), provide a dedicated ferrite + bulk cap on the analog AVDD/AVSS rails, and reserve an external 25 MHz oscillator for the Ethernet PLL.

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PIC18F66J65T-I/PT

PIC18F66J65T-I/PT - 8-bit MCU 96KB Flash 10BASE-T Ethernet | Microchip

The Microchip Technology PIC18F66J65T-I/PT is a feature-rich 8-bit PIC18 microcontroller integrating a 10 Mbps Ethernet MAC/PHY peripheral, 96 KB of Flash program memory, and 12 KB of RAM, housed in a 64-pin TQFP (PT) 10x10 mm package. Operating from 2.0 V to 3.6 V core with a 4.2 V to 5.5 V wide-range input, the device executes instructions at up to 40 MHz (10 MIPS) through a 200 ns single-cycle execution pipeline, making it suitable for deterministic networked embedded control. A microcontroller (MCU) is a single-chip computer containing a CPU, program memory (Flash), data memory (RAM), timers, communication peripherals, and I/O. The PIC18 family uses a 16-bit modified Harvard RISC architecture targeting high-throughput 8-bit applications where deterministic interrupt response matters more than raw MHz. Embedded Ethernet MCUs like the PIC18F66J65 form a sub-category at the intersection of microcontrollers and network interface ICs, combining an HTTP/TCP-friendly stack with general-purpose digital I/O. Key features include 54 digital I/O pins organized across multiple ports, an integrated 10BASE-T Ethernet MAC with HP Auto-MDIX PHY, full-speed USB 2.0 (device/host/OTG), two CAN modules (ECAN), two UART/USART modules, SPI and I2C peripherals, 16-channel 10-bit ADC, and four 16-bit timers with CCP/ECCP modules. The on-chip RTCC with timestamp enables time-stamped event logging critical for industrial controllers. An LCD driver with charge pump supports up to 132 segments, eliminating external display drivers in HMI designs. Architecture-wise, the device uses Microchip's nanoWatt XLP technology for low-power sleep modes (down to 100 nA typical standby), making it deployable in battery-backed remote monitoring nodes. Hardware AES/DES encryption accelerators and a true random number generator support secure remote-management firmware updates. The 64-pin TQFP package exposes ample peripherals, including parallel master/slave port for bus expansion. Typical applications include industrial Ethernet sensors, building automation gateways, remote monitoring controllers, intelligent HVAC nodes, networked laboratory instruments, and automotive infotainment auxiliary modules. Its combination of 10BASE-T, USB, CAN, and ADC simplifies multi-protocol field nodes that previously required a separate Ethernet controller. When designing with this MCU, allocate sufficient Flash headroom for the TCP/IP stack (roughly 40 KB of the 96 KB), use the integrated MAC/PHP+PHYs and an external 25 MHz crystal reference, and follow Microchip's TCP/IP stack Application Note AN833 for buffer sizing. EMC layout requires guarding the analog AVdd rail and isolating the Ethernet magnetics by at least 4 mm of copper-free PCB area. This page synthesizes distributor pricing, drop-in alternatives from the same PIC18 family, and practical Ethernet-PCB design notes not found in the standalone manufacturer datasheet.

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PIC18F66J93-I/PT

PIC18F66J93-I/PT - 48MHz, 64KB Flash LCD MCU, 64-TQFP | Microchip

The Microchip Technology PIC18F66J93-I/PT is an 8-bit PIC18J-family microcontroller that integrates a segmented LCD driver, a 12-bit A/D converter, and nanoWatt XLP power management, packaged in a 64-pin TQFP (10x10 mm). The device operates at up to 48 MHz internal clock (12 MIPS), provides 64 KB of Flash program memory, 4 KB of RAM, and 12 channels of 12-bit ADC for mixed-signal front ends. What is an 8-bit LCD microcontroller? An 8-bit LCD microcontroller is a single-chip computer that combines a CPU, non-volatile Flash memory, RAM, peripherals, and an integrated segmented LCD driver. The PIC18F66J93 belongs to the taxonomy: microcontroller -> 8-bit MCU -> PIC18 family -> PIC18J LCD sub-family -> power-managed (nanoWatt XLP). It is typically chosen when a product needs a graphical or numeric LCD readout without an external LCD controller, plus analog sensing. Key features include 64 KB of self-programmable Flash, 4 KB of RAM, integrated segmented LCD driver (up to 64 segments typical), 12-bit A/D with 12 input channels, nanoWatt XLP for ultra-low sleep currents, multiple communication peripherals (UART, SPI, I2C), and a wide operating voltage range. The integrated LCD driver eliminates an external charge-pump IC and reduces BOM cost in handheld products. From a technical-depth perspective, the PIC18F66J93 uses an enhanced Harvard architecture with a C-optimized instruction set, hardware multiplier, and 31-level hardware stack. The nanoWatt XLP technology delivers deep-sleep currents in the nanoampere range, making the device suitable for battery-powered meters. The integrated 12-bit ADC includes internal reference and automatic acquisition modes for accurate sensor measurements. Typical applications include handheld battery-powered meters, thermostats and HVAC controllers, home security panels, portable medical devices (glucometers, BP monitors), and utility metering products. The combination of integrated LCD, ADC, and low-power operation makes the part a single-chip solution for these applications. When designing with this device, plan the LCD segment routing carefully because the maximum segment count depends on the chosen pin assignment and multiplexing mode. Use Microchip's MPLAB X IDE and the PIC18F66J93 Peripheral Library to accelerate firmware development. Provide a decoupling capacitor pair (100 nF + 10 uF) close to VDD/VSS to ensure ADC and LCD reference stability. This page synthesizes distributor pricing, drop-in compatible PIC18 family alternatives from the same TQFP-64 footprint, and practical design notes not consolidated in the manufacturer datasheet alone.

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PIC18F66J93T-I/PT

PIC18F66J93T-I/PT - 8-bit LCD MCU, 64KB Flash, 12-bit ADC | Microchip

The Microchip Technology PIC18F66J93T-I/PT is a 64-pin, 8-bit PIC18 microcontroller with 64KB Flash, 3923 bytes of RAM, and an integrated segment LCD driver. It operates at up to 48 MHz (12 MIPS) and includes a 12-bit, 12-channel ADC, making it well suited to handheld metering, thermostat, and battery-powered embedded designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and programmable peripherals. The PIC18 family uses an enhanced 8-bit RISC architecture with hardware multiply, a 16-bit instruction word, and a vectored interrupt controller. Within the PIC18 hierarchy, the J93 sub-family adds integrated segment-LCD drive, nanoWatt XLP power management, and a 12-bit ADC, positioning it between general-purpose PIC18F and PIC24/dsPIC families. Key features include 64KB (32K x 16) self-programmable Flash, 3923 bytes SRAM, 51 digital I/O, an internal oscillator, nanoWatt XLP low-power modes, an integrated LCD segment driver, and a 12-bit ADC with 12 input channels. The device operates from 2.0V to 3.6V, supporting battery-powered and portable designs. The 64-pin TQFP (10x10 mm) package offers the most pin-rich option in the family for designs needing extensive GPIO and segmented LCD drive. The PIC18F66J93 architecture uses a 16-bit-wide instruction path, 31-level hardware stack, and a priority-interrupt controller, with peripheral features including EUSART, I2C, SPI, 10-bit PWM, comparators, and a real-time clock counter. Integrated nanoWatt XLP support enables sleep currents as low as the low-nA range, extending battery life in metering applications. Typical applications include handheld meters, thermostats, home security panels, portable medical devices, utility metering, and consumer appliances with segmented LCD user interfaces. Design considerations include providing adequate decoupling near VDD/AVDD pins and following Microchip's recommended layout for LCD bias generation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC18F66J94-I/PT

PIC18F66J94-I/PT - 64KB Flash, USB/LCD, 8-bit MCU | Microchip

The Microchip Technology PIC18F66J94-I/PT is a 64-pin 8-bit PIC18 microcontroller delivering 16 MIPS at 64 MHz core clock, integrating 64 KB of Flash program memory and 4 KB of RAM in a 64-TQFP (10x10x1 mm) package. It combines a full-speed USB 2.0 device/embedded host controller, a segmented LCD driver (up to 256 segments), nanoWatt XLP extreme-low-power technology, and a rich analog/digital peripheral set, targeting battery-backed human-machine interface (HMI) products. The -I suffix denotes the industrial -40C to +85C operating range, while /PT denotes the 64-pin TQFP package supplied in trays. An 8-bit microcontroller (MCU) is a single-chip computer built around a CPU with an 8-bit data path, on-chip program and data memory, and integrated peripherals. Within the broader hierarchy, the PIC18F66J94 sits in the MCU > microcontroller > embedded controller > semiconductor tree, and it is a member of the PIC18 family of Microchip's 8-bit PIC architecture, the family that introduced enhanced mid-range instructions, hardware multiply, and C-friendly addressing. The part is positioned as a 'system-on-chip' for cost-sensitive applications that still need USB, an LCD glass, and ultra-low standby power. Key features include 64 KB Flash (32K x 16), 4 KB RAM, hardware 12-bit A/D, two I2C, two SPI, four USART, 10 PWM channels, 8 timers, 3 comparators, a Charge Time Measurement Unit (CTMU) for capacitive touch, a hardware Real-Time Clock/Calendar (RTCC) with Vbat domain, and an integrated charge pump that generates the LCD bias voltage. This level of analog and communication integration eliminates many external ICs that competing 8-bit designs still require. Typical applications include USB-connected industrial control panels, battery-backed metering (electricity/gas/water) with on-glass LCD, portable medical point-of-care devices, e-meter/energy-monitoring front-ends, USB medical/scientific instrument data loggers, and capacitive-touch user interfaces. The wide 2.0-3.6V Vdd range and 250 nA typical RTCC current from Vbat allow multi-year coin-cell operation in metering applications. Designers should plan PCB layout with separate analog/digital ground returns, keep the 12-bit A/D reference decoupling within 5 mm of the AVdd/AVss pins, and reserve a 4.7 uF bulk + 0.1 uF bypass pair on Vbat to preserve RTCC accuracy across battery swaps. Pin 1 orientation, I/O remapping, and PPS configuration must be set in the configuration words before the first C statement to avoid locked I/O states. This page synthesizes verified distributor pricing, pin-compatible drop-in alternatives from the same Microchip PIC18F66Jxx family, and practical design notes that go beyond the manufacturer datasheet to accelerate schematic capture and BOM selection.

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PIC18F66J94T-I/MR

PIC18F66J94T-I/MR - 64KB Flash 8-bit MCU USB/LCD | Microchip

The Microchip PIC18F66J94T-I/MR is an 8-bit PIC18F microcontroller with 64KB of Flash program memory and 4KB of RAM, housed in a 64-pin VFQFN (MR) exposed-pad package operating at up to 64MHz (16 MIPS) from a 3.3V supply. The 'T' suffix denotes tape-and-reel packaging and '-I' designates the industrial -40C to +85C operating temperature range, while 'MR' identifies the 64-lead 9x9mm QFN package with exposed thermal pad. A microcontroller (MCU) is a single-chip computer containing a CPU, memory (Flash for program, SRAM for data), and programmable peripherals. PIC18F series devices use Microchip's enhanced 8-bit RISC architecture with a 16-bit instruction word and Harvard bus structure. This family specifically targets low-power applications via nanoWatt XLP technology and integrates segmented LCD drivers (up to 256 segments), USB 2.0 Full-Speed, and analog peripherals, replacing multiple discrete components in cost-sensitive designs. Key features of the PIC18F66J94T-I/MR include 64KB of self-programmable Flash, 4KB SRAM, integrated USB 2.0 Full-Speed transceiver with on-chip PHY, a segmented LCD controller supporting up to 256 segments, 16 MIPS throughput at 64MHz, and nanoWatt XLP power management with multiple low-power sleep modes drawing microamp-level current. The 64-pin VFQFN exposed-pad package provides low thermal resistance and compact PCB footprint for space-constrained designs. The device integrates a 10-bit ADC, multiple capture/compare/PWM modules, I2C, SPI, UART, and the USB Full-Speed transceiver with internal 3.3V regulator. Real-Time Clock/Calendar with dedicated low-power oscillator and charge time measurement unit enable battery-powered metering designs. The architecture supports self-programming for in-field firmware updates. Typical applications include USB-connected human-interface devices, electronic point-of-sale terminals with LCD displays, portable medical instrumentation, industrial data loggers, automotive dashboard clusters, and consumer white goods with segment LCD interfaces. The combination of USB, LCD, and low-power features makes this MCU a strong fit for any battery-powered product requiring both USB connectivity and a multi-segment user display. When designing with this part, ensure the exposed pad is soldered to a sufficient copper area on the PCB for thermal dissipation. The internal 3.3V regulator must be bypassed with the manufacturer-recommended capacitor values per the datasheet's electrical characteristics section to ensure USB PHY compliance. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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PIC18F66K22-E/MR

PIC18F66K22-E/MR - 8-bit 64MHz 64KB Flash MCU 64-VQFN | Microchip

The Microchip Technology PIC18F66K22-E/MR is an 8-bit PIC18 microcontroller built on the nanoWatt XLP low-power architecture, delivering 64 MIPS performance at 64 MHz, packaged in a 64-pin VQFN (9x9 mm) with an exposed thermal pad. It integrates 64 KB of Flash program memory, 4 KB of RAM, and 1 KB of EEPROM, with a 12-bit A/D converter supporting up to 16 input channels. The -E temperature grade indicates an extended operating range of -40 C to +125 C. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory, and integrated peripherals such as ADCs, timers, and communication controllers. The PIC18 family belongs to Microchip's 8-bit PIC® RISC architecture hierarchy: PIC18 -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The K-series adds the nanoWatt XLP technology for ultra-low-power operation, targeting battery-powered and energy-harvesting applications where sleep current and wake-up time dominate energy budgets. Key features include the Charge Time Measurement Unit (CTMU) for capacitive touch sensing, multiple communication peripherals (UART, SPI, I2C), enhanced PWM modules, and configurable logic cells. The device operates from 1.8 V to 5.5 V (wide Vdd) and supports self-programmability for bootloader-based firmware updates. The 12-bit ADC provides up to 16 channels for sensor interfacing. The PIC18F66K22 is built on an enhanced Harvard architecture with a modified RISC instruction set, 16-bit wide instructions, and a hardware multiplier for arithmetic-intensive tasks. Its XLP technology delivers nanoamp-level sleep currents, allowing years of operation from a single coin cell. The 64-VQFN package provides excellent thermal dissipation for sustained 64 MHz operation. Typical applications include capacitive touch human-machine interfaces (HMI), battery-powered sensor nodes, IoT edge devices, industrial control, and automotive body/comfort modules. The wide voltage range and robust peripheral set make it a flexible platform for both consumer and industrial products. When designing with this MCU, allocate a 0.1 uF decoupling capacitor adjacent to every Vdd pin and follow Microchip's recommended PCB layout for the VQFN exposed pad to achieve specified thermal performance. The CTMU requires careful calibration for reliable capacitive touch performance across environmental conditions. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC18F66K22-E/PT

PIC18F66K22-E/PT - 64KB Flash 8-bit MCU with nanoWatt XLP | Microchip

The Microchip PIC18F66K22-E/PT is an 8-bit high-performance PIC18 microcontroller with 64 KB Flash program memory, 4 KB RAM, and 1 KB EEPROM, housed in a 64-pin TQFP (10x10 mm) package with nanoWatt XLP extreme-low-power technology. It integrates a 12-bit A/D converter with up to 16 input channels, two analog comparators, a Charge Time Measurement Unit (CTMU) for capacitive touch, multiple Enhanced USART, SPI, and I2C peripherals, and a 64 MHz internal oscillator block. The device operates from 1.8 V to 5.5 V across an industrial-grade -40 °C to +125 °C extended temperature range (suffix ‘E’) and is qualified to AEC-Q100 for automotive applications. It is pin-compatible within the PIC18F6xK22 family, allowing easy migration between 64 KB / 128 KB Flash density variants. The PIC18F66K22-E/PT provides a robust feature set including a 16-bit timer, multiple capture/compare/PWM modules, an LCD driver (on selected variants), and a charge time measurement unit ideal for capacitive touch sensing. The ‘E’ temperature grade suffix indicates the -40 °C to +125 °C operating range, and the /PT suffix designates the 64-pin TQFP (10x10 mm) plastic thin quad flat pack. The exposed-pad TQFP provides a thermal pad that improves heat dissipation for higher-clock, peripheral-intensive designs. The 64-pin TQFP package footprint is shared across the PIC18F6xK22 family, so designers can scale code density without re-laying-out the PCB. This page synthesizes distributor pricing, pin-compatible drop-in alternatives from the same Microchip K22 family, AEC-Q100 cross-reference data, and practical design notes for capacitive touch, low-power battery, and USB connectivity applications not found in the manufacturer datasheet alone. For automotive designs requiring hardware cryptography or CAN-FD, consider the related PIC18F6xK90 family; for designs needing higher Flash density, see PIC18F67K22 (128 KB) on the same footprint.

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PIC18F66K22-I/MR

PIC18F66K22-I/MR - 64KB Flash 8-bit MCU, 64MHz, 64-VQFN | Microchip

The Microchip Technology PIC18F66K22-I/MR is an 8-bit PIC18 microcontroller with 64KB of Flash program memory, 4KB of RAM, and 1KB of EEPROM, operating at up to 64MHz across a 2.5V to 5.5V supply range in a 64-pin VQFN (9x9 mm) package. It is part of the PIC18F "K22" family of enhanced-flash MCUs that integrate nanoWatt XLP extreme-low-power technology, a 12-bit ADC with up to 16 channels, and a Charge Time Measurement Unit (CTMU) for capacitive-touch sensing. A PIC18F-series microcontroller is a modified-Harvard 8-bit RISC MCU built around a 16-bit instruction word and an 8-bit data path, optimised for high code density, deterministic interrupt latency, and low power consumption. PIC18 devices sit between simple PIC16/12 controllers and the higher-performance dsPIC/PIC32 lines in the Microchip portfolio, and are typically deployed as main system controllers in cost-sensitive, low-power embedded designs spanning consumer white goods, industrial sensors, and automotive body electronics. Key features include nanoWatt XLP sleep currents below 100 nA typical, a 12-bit A/D converter with up to 16 input channels, multiple Enhanced USART, SPI, and I2C peripherals, a 16-bit Capture/Compare/PWM module, and an RTCC with independent clocking. The CTMU peripheral enables robust capacitive touch buttons, sliders, and proximity sensing using only a few external passive components. The 64-pin VQFN package exposes up to 54 digital I/O lines for parallel expansion and user-interface needs. The device uses Microchip's enhanced Flash cell technology and supports self-programmability under firmware control, plus background-debug MPLAB ICD support through two interface pins. Internal oscillator blocks (HFINTOSC up to 16 MHz and LFINTOSC at 31 kHz) allow operation without an external crystal, while a Phase-Locked Loop (PLL) is available to derive the 64 MHz system clock from internal or external sources. The architecture also integrates a 5-bit DAC, multiple comparators, and hardware CRC for data integrity. Typical applications include capacitive-touch user interfaces for white goods and consumer appliances, low-power battery-driven sensor nodes with sleep duty cycling, industrial control panels with mixed analog and digital I/O, and automotive body modules requiring AEC-style robustness under extended temperature. The wide 2.5V-5.5V supply range also makes the part suitable for both 3.3V and 5V system rails. When designing with this MCU, plan for a low-impedance ground return and decoupling of VDD/AVDD pairs within 5 mm of the respective pins. Engineers should also evaluate the RTCC current budget against their standby lifetime target, since the XLP sleep-current figure dominates battery-life calculations. This page synthesises distributor pricing, drop-in alternatives, and practical design notes that are not aggregated on the manufacturer datasheet alone.

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PIC18F66K22-I/MRRSL

PIC18F66K22-I/MRRSL - 8-bit MCU, 64KB Flash, 64MHz, 64-pin QFN | Microchip

The Microchip Technology PIC18F66K22-I/MRRSL is an 8-bit PIC18 enhanced-flash microcontroller featuring 64 KB of Flash program memory (32K x 16), 4 KB of RAM, and 1 KB of EEPROM, running at up to 64 MHz internal clock in a 64-pin QFN (MR) package with exposed pad. Operating from 1.8 V to 5.5 V with nanoWatt XLP technology for ultra-low-power sleep current, this MCU combines high-performance RISC execution (200 ns instruction cycle) with on-chip peripherals including 12-bit ADC, mTouch capacitive touch via CTMU, multiple PWM/ECCP modules, USB, CAN, and three SPI/I2C/UART interfaces. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path with integrated CPU, Flash program memory, RAM, EEPROM, and peripherals. Within the semiconductor hierarchy it sits under microcontrollers, which sit under integrated circuits (ICs). The PIC18 family uses a RISC architecture with hardware multiplier, 31-level stack, and 16-bit instructions, sitting above baseline PIC10/12/16 parts in performance while remaining C-friendly through the MPLAB XC8 toolchain. Key differentiating features of the PIC18F66K22 include 54 digital I/O lines, a 12-bit A/D converter with up to 16 channels, an 8-bit DAC, hardware CTMU for capacitive touch sensing, four 16-bit timers, three comparators, two ECCP and three CCP PWM modules, plus integrated USB 2.0 full-speed and CAN 2.0B peripherals. The XLP variant achieves nanoamp sleep currents, extending battery life in energy-harvesting and IoT edge nodes. The device is fabricated in a low-power CMOS process with internal oscillator flexibility (31 kHz to 16 MHz HF, plus PLL to 64 MHz). Its wide 1.8-5.5 V range simplifies designs migrating between 3.3 V and 5 V rails, and the CTMU peripheral enables robust mTouch capacitive buttons, sliders, and proximity sensing without external components. Typical applications include industrial control and HMI panels, USB/CAN-connected sensor hubs, capacitive touch user interfaces, battery-powered metering, and automotive body/comfort modules. Its 64 KB Flash and 4 KB RAM comfortably support USB stacks and CANopen/J1939 lightweight protocols in 8-bit C code. When designing with this part, budget the QFN exposed pad with a continuous ground plane and thermal vias; without adequate bottom copper the high I/O count pushes junction temperature up under full I/O switching load. The MR package variant is recommended over PT (TQFP) for space-constrained PCBs requiring a smaller footprint with thermal pad soldering. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that are not collected in any single manufacturer datasheet.

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PIC18F66K22-I/PT

PIC18F66K22-I/PT - 64KB Flash 8-Bit MCU 64MHz TQFP-64 | Microchip

The Microchip Technology PIC18F66K22-I/PT is an 8-bit PIC18 RISC microcontroller with 64 KB Flash, 4 KB RAM, 1 KB EEPROM, and a 64 MHz internal CPU clock, housed in a 64-pin TQFP (10x10 mm) package. It features nanoWatt XLP extreme-low-power technology, a 12-bit A/D converter with up to 16 channels, and a Charge Time Measurement Unit (CTMU) for capacitive touch and accurate time measurement. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path that integrates a CPU, non-volatile program memory (Flash), volatile data memory (RAM), non-volatile data memory (EEPROM), and a rich set of peripherals (timers, ADC, communication ports, I/O). 8-bit MCUs sit within the broader semiconductor hierarchy: microcontroller -> embedded processor -> integrated circuit -> semiconductor device. They remain the workhorse of cost-sensitive, deterministic, low-power embedded designs because their instruction sets, toolchains (MPLAB X, XC8), and code portability are mature and well understood. Key features include up to 53 digital I/O pins, multiple communication peripherals (2x I2C/SPI, 2x UART with LIN, USB 2.0 full-speed), 5 CCP/ECCP modules, two analog comparators, and a 16-bit enhanced timer architecture. The wide 1.8V-5.5V VDD range and nanoWatt XLP modes (sleep current down to the nA range) make the part well suited to battery-powered and energy-harvesting products. The PIC18F66K22-I/PT combines a Harvard-class RISC core with 16-bit wide instructions, hardware multiply, and a C-friendly compiler target. Its CTMU simplifies robust capacitive-touch key implementation, while the 12-bit ADC supports sensor-system health via accurate signal acquisition. Internal oscillator calibration and a wide operating range (-40C to +85C industrial, -40C to +125C extended) address industrial, automotive, and white-goods environments. Typical applications include capacitive-touch human-machine interfaces (HMIs), industrial control modules, USB peripherals, low-power remote sensor nodes, and white-goods / appliance controllers. The combination of USB, multiple UARTs, and PWM channels also suits small motor-control and LED-driver boards. When designing with this part, allocate at least two decoupling capacitors per VDD/AVDD pin (100 nF ceramic + bulk), keep analog and digital grounds separated, and place the 20 MHz external crystal traces short and guarded to minimise jitter on USB and UART baud rates. This page consolidates distributor pricing as of 2026-09-28, drop-in alternative MPNs in the same TQFP-64 footprint, and practical PCB/thermal guidance not always present on a single manufacturer datasheet page.

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PIC18F66K22T-I/MR

PIC18F66K22T-I/MR - 8-bit 64MHz MCU 64KB Flash | Microchip

The Microchip Technology PIC18F66K22T-I/MR is an 8-bit PIC18 microcontroller running up to 64 MHz, integrating 64 KB of Flash program memory, 4 KB of SRAM and 1 KB of data EEPROM, housed in a 64-pin VQFN (9x9 mm) package with industrial -40C to +85C operating range. The 'T' suffix indicates Tape & Reel packaging for high-volume SMT assembly, and the 'I' grade denotes the industrial temperature window. A PIC microcontroller (Programmable Interface Controller) is a Harvard-architecture, RISC-based microcontroller that integrates a CPU, non-volatile Flash program memory, working RAM, EEPROM, and a rich peripheral set into a single IC. Microchip's PIC18 family extends the baseline PIC16 instruction set with linear memory addressing and C-friendly extensions, sitting between the 8-bit PIC16 and the 16-bit dsPIC/PIC24 families in the broader microcontroller taxonomy: 8-bit MCU -> PIC18 -> nanoWatt XLP family -> low-power 8-bit PIC microcontroller. Key features of this part include nanoWatt eXtreme Low Power (XLP) technology with deep-sleep currents in the nanoamp range, a 12-bit A/D converter with up to 16 channels, two I2C, two SPI and two USART (LIN-capable) interfaces, the Charge Time Measurement Unit (CTMU) for capacitive touch and simple time-of-flight sensing, and a Parallel Slave Port for external bus expansion. The 64-pin VQFN gives access to the full peripheral count of the PIC18F6xK22 sub-family. The PIC18F66K22 architecture uses a modified Harvard core with a 16-bit instruction word and 8-bit data path. A 31-level hardware stack, indexed and indirect addressing modes, and an 8x8 hardware multiply support efficient C compilation. Internal oscillator blocks can be software-tuned, and the PLL derives the 64 MHz FOSC from a lower-frequency source, enabling both low-power sleep operation and high-throughput active modes. The CTMU is a programmable constant-current source that, combined with the A/D, performs capacitance measurement for touch keys or simple distance sensing. Typical applications include industrial control panels, capacitive touch human-machine interfaces, low-power remote sensor nodes, battery-powered instrumentation, USB/serial bridging using the USART peripherals, and small graphical or segment-display user interfaces. The wide peripheral mix also suits HVAC controllers and home appliances where multiple communication buses and ADC channels must coexist on a single chip. When designing with this device, allocate the VQFN exposed pad (EP) to a solid ground copper pour for thermal dissipation, and follow Microchip's decoupling guidance of a 100 nF ceramic on every VDD/AVDD pair plus a bulk 10 uF near the IC. Programming is supported via ICSP on PGC/PGD, and Microchip's MPLAB X with XC8 provides the canonical toolchain. This page synthesizes distributor pricing, drop-in alternatives from the PIC18 K-series, and practical design notes not collected in any single distributor listing.

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PIC18F66K22T-I/MRRSL

PIC18F66K22T-I/MRRSL - 8-bit 64KB Flash MCU, 64MHz, 64-VQFN | Microchip

The Microchip Technology PIC18F66K22T-I/MRRSL is an 8-bit PIC RISC microcontroller with 64KB of Flash program memory, 4KB of RAM, and 64MHz maximum CPU clock speed, supplied in a 64-pin VQFN (QFN-64) exposed-pad package on tape-and-reel. It is qualified to the AEC-Q100 standard for automotive applications and operates from a 2.5V / 3.3V / 5V supply range. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, volatile data memory, and a rich set of peripherals (ADC, timers, communication ports, GPIO) into one device. PIC18F-series MCUs from Microchip sit within the broader taxonomy: 8-bit microcontroller -> embedded controller -> integrated circuit -> semiconductor. The PIC18F family implements an enhanced Harvard RISC architecture with 16-bit instructions optimized for C-compiled code and deterministic interrupt latency, and the 66K22 variant extends this architecture with nanoWatt XLP (eXtreme Low Power) technology and a Charge Time Measurement Unit (CTMU) for capacitive touch sensing. Key features include 64KB Flash program memory, 4KB RAM, 1KB EEPROM, 54 digital I/O pins, 12-bit ADC with up to 16 channels, multiple UART/SPI/I2C peripherals, and nanoWatt XLP sleep currents in the microamp range. The 64-VQFN exposed-pad package offers compact board mounting while the thermal pad provides a low-resistance path for heat dissipation. The PIC18F66K22 implements an enhanced Harvard RISC core with 8-bit data path and 16-bit instruction word, a hardware multiplier, and a vectored interrupt controller. nanoWatt XLP technology provides multiple low-power operating modes (Run, Idle, Sleep, and deep Sleep with RTCC), enabling battery lifetimes measured in years for typical sensor-node duty cycles. The CTMU peripheral can be used for capacitive touch sensing, temperature measurement with external diodes, and precision time-of-flight measurements. Typical applications include automotive body and chassis electronics, capacitive touch user interfaces, battery-powered sensor nodes with XLP modes, industrial control panels with multiple serial interfaces, and consumer appliances requiring low standby power. The AEC-Q100 qualification also makes the part appropriate for under-hood and cabin automotive modules. When designing with this device, route the exposed thermal pad to a continuous ground copper plane and stitch vias beneath the package to minimise thermal resistance and inductance. Decouple VDD and AVSS with 100nF ceramic capacitors placed within 5mm of each supply pin, and follow Microchip's MPLAB Xpress and Curiosity development-board reference layouts when bringing up a new PCB. This page consolidates distributor pricing, pin-compatible PIC18F drop-in alternatives, and practical design guidance not aggregated elsewhere on the web, including notes on CTMU firmware calibration and XLP wakeup latency budgets.

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PIC18F66K22T-I/PT

PIC18F66K22T-I/PT - 64KB Flash 8-bit XLP MCU TQFP-64 | Microchip

The Microchip Technology PIC18F66K22T-I/PT is a high-performance 8-bit PIC18 microcontroller built on nanoWatt XLP (eXtreme Low Power) technology and offered in a 64-pin TQFP (PT) 10x10 mm package. It integrates 64 KB of Flash program memory (32K x 16), 4 KB of RAM, and 1 KB of EEPROM, while delivering up to 64 MHz CPU performance from a 16 MIPS C-compiler-friendly Harvard architecture. A microcontroller (MCU) is a single-chip computer integrating a CPU core, program and data memory, peripherals, and I/O. The PIC18F family is Microchip's high-performance 8-bit tier and sits within the broader taxonomy: 8-bit MCU -> PIC MCU -> microcontroller -> embedded processor -> semiconductor. nanoWalt XLP technology adds ultra-low-power sleep and run modes that extend battery life in energy-harvested or coin-cell designs. Key features include 54 digital I/O pins, a 12-bit A/D converter with up to 16 channels, two analog comparators, an onboard Charge Time Measurement Unit (CTMU) that simplifies capacitive touch and precise timing applications, multiple Enhanced USART, SPI and I2C peripherals, seven 8/16-bit timers, and a 5-bit DAC. The device operates across 1.8 V to 5.5 V (depending on configuration) and supports industrial temperature grades from -40C to +85C. Architecturally, the PIC18F66K22 uses a 16-bit modified Harvard structure with separate program Flash and data SRAM buses, enabling simultaneous instruction fetch and operand access. The integrated CTMU provides constant-current source/sink capabilities that, paired with the ADC, enable accurate time-of-flight measurement for distance sensing or capacitive touch user interfaces without external components. Typical applications span industrial control panels, building automation, sensor hubs, low-power remote keyless entry, medical instrumentation, USB/HID peripherals, and battery-powered IoT nodes. The combination of XLP deep-sleep current in the nanoamp range, generous I/O count, and the integrated CTMU makes it attractive for power-constrained edge nodes. Designers should evaluate the supplied 1.8 V/3.3 V/5 V operating modes, route AVdd and AVss pins cleanly to preserve ADC SNR, and follow Microchip TB0763 layout guidance for nanoWatt XLP decoupling. The CTMU requires careful calibration against a stable internal or external time base. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet - giving embedded engineers a faster path to BOM validation and second-source qualification.

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PIC18F66K22T-I/PTRSL

PIC18F66K22T-I/PTRSL - 64KB Flash 8-bit XLP MCU | Microchip

The Microchip PIC18F66K22T-I/PTRSL is an 8-bit PIC microcontroller from the PIC18F K-series family, featuring 64KB (32K x 16) of Flash program memory and running at up to 64 MHz internal clock in a 64-pin TQFP (10x10 mm) package. It belongs to Microchip's nanoWatt XLP (eXtreme Low Power) family and is supplied in tape-and-reel packaging with the -I/-40C to +85C industrial temperature grade. The device integrates 4KB RAM, 1KB EEPROM, and 54 digital I/O pins, with on-chip peripherals including a 12-bit ADC, multiple UART/SPI/I2C interfaces, PWM modules, and a Charge Time Measurement Unit (CTMU) for capacitive touch sensing. An 8-bit microcontroller (MCU) is a programmable integrated circuit that combines a CPU, memory (Flash/ROM, RAM, EEPROM), digital I/O, and analog/mixed peripherals on a single silicon die, optimized for embedded control tasks. Within Microchip's portfolio, the PIC18F architecture occupies the mid-to-high performance tier of 8-bit MCUs, sitting above baseline PIC10/12/16 parts and below the dsPIC/PIC32 16-bit and 32-bit families. Within that hierarchy, the PIC18F66K22 belongs to the PIC18F K22 sub-family which is distinguished by nanoWatt XLP ultra-low-power technology, making it well suited for battery-powered and energy-harvesting applications. Key features include 64 MHz maximum CPU clock with up to 16 MIPS throughput, hardware multipliers for efficient arithmetic, an integrated LCD driver, capacitive touch via CTMU, multiple capture/compare/PWM modules, and a wide 1.8V to 5.5V operating voltage range. The XLP technology offers sleep currents below 100 nA typical, and peripheral modules can be selectively disabled to minimize active current. The PIC18F66K22 family uses a 16-bit modified-Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and data access. Flash program memory is self-programmable under firmware control, supporting in-application updates over UART, I2C, or SPI. On-chip debugging is supported through Microchip's ICD (In-Circuit Debugger) interface using just two I/O pins. Typical applications include capacitive touch user interfaces, battery-powered sensor hubs, LCD-displayed consumer products, industrial control panels, and low-power IoT edge nodes. Designers select the PIC18F66K22 for applications needing 8-bit simplicity with extended RAM/Flash and rich analog peripherals. When designing with this MCU, allocate adequate decoupling (100 nF + bulk cap) near each power pin, keep trace lengths to the ICSP/ICD pins short, and verify the Vdd range for the chosen clock mode. The wide 1.8V-5.5V range simplifies both lithium-battery and USB/5V designs. This page consolidates distributor pricing, drop-in alternatives in the same TQFP-64 footprint, and practical design notes for the PIC18F66K22T-I/PTRSL not found in the manufacturer datasheet.

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PIC18F66K40-E/MR

PIC18F66K40-E/MR - 64KB Flash, 64MHz 8-bit MCU, 64-VQFN | Microchip

The Microchip Technology PIC18F66K40-E/MR is a high-performance, low-power 8-bit PIC18 microcontroller built on an enhanced RISC architecture with a 64 MHz maximum operating frequency, 64 KB of Flash program memory, 3562 bytes of SRAM, and 1024 bytes of EEPROM, all housed in a 64-pin 9x9 mm VQFN package with exposed pad. The device integrates rich Core Independent Peripherals such as the Configurable Logic Cell (CLC), Complementary Waveform Generator (CWG), Windowed Watchdog Timer (WWDT), and CRC/Memory Scan, enabling hardware-based state-machine control without CPU intervention. What is a PIC18 microcontroller? A PIC18 microcontroller (MCU) is an 8-bit Harvard-architecture RISC microcontroller from Microchip Technology's PIC18 family. PIC18 MCUs sit within the broader hierarchy of microcontrollers -> embedded controllers -> semiconductor ICs, and are widely used in general-purpose embedded designs where deterministic real-time performance, low power consumption, and rich peripheral integration are required. The PIC18F66K40 family specifically targets applications needing large memory, 5V operation, and eXtreme Low Power (XLP) features. Key features of the PIC18F66K40-E/MR include 1.024 KB of EEPROM, an integrated 10-bit ADC with computation, multiple UART/SPI/I2C interfaces, up to 54 digital I/O pins, and a wide 2.3V to 5.5V operating voltage range supporting both 3.3V and 5V systems. The device also includes a 32 MHz internal oscillator, a 16-bit PWM module, and a peripheral pin select (PPS) system for flexible signal routing. Its XLP technology delivers sub-uA sleep currents ideal for battery-powered applications. Architecturally, the PIC18F66K40 uses a 16-bit instruction word with a hardware multiplier and a deterministic 4-clock instruction cycle, providing predictable interrupt latency. The PPS system decouples peripheral pin assignments from the silicon, simplifying PCB layout. The CIP (Core Independent Peripheral) approach enables complex control loops without CPU load, making this MCU well-suited for sensor conditioning, motor control timing, and communication bridging tasks. Typical applications include industrial automation controllers, automotive body electronics (using the related AEC-Q100 grade), IoT sensor nodes, home appliance control boards, USB device interfaces (via MSSP modules), and battery-powered metering. The 5V tolerance and ample I/O count also suit HVAC and building automation subsystems where robustness is critical. Designers should consider decoupling the VQFN exposed pad with a low-impedance ground plane via multiple thermal vias, and must respect the supply ramp requirements for the ADC reference. Programming is supported via Microchip's MPLAB X IDE and the XC8 compiler suite, with hardware debug enabled through the 2-wire ICSP interface. This page synthesizes distributor pricing, same-brand drop-in alternatives, and practical design notes that complement, but are not duplicative of, the manufacturer datasheet content.

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PIC18F66K40-E/PT

PIC18F66K40-E/PT - 64KB Flash 8-bit XLP MCU | Microchip

The Microchip Technology PIC18F66K40-E/PT is a high-performance 8-bit PIC18 microcontroller in the XLP (eXtreme Low Power) family, integrating 64KB of Flash program memory, 4KB of RAM, and 256B of EEPROM in a 64-pin TQFP (PT) package measuring 10x10 mm. It operates at up to 64 MHz instruction-cycle clock, supports 1.8V to 5.5V wide VDD operation, and is the -E temperature grade (industrial, -40C to +125C). On-chip peripherals include a 10-bit ADC2, 5-bit DAC, comparators, PWM, CCP, CWG (Complementary Waveform Generator), HLT (Hardware Limit Timer), WWDT (Windowed Watchdog Timer), SCAN/CRC, ZCD (Zero-Cross Detect), and multiple Core Independent Peripherals. What is a PIC18 XLP microcontroller? The XLP family is Microchip's ultra-low-power PIC18 sub-family built on an enhanced Harvard RISC architecture with a modified instruction set. It belongs to the broader taxonomy: 8-bit microcontroller -> embedded MCU -> integrated circuit. XLP parts are designed for battery-powered and energy-harvesting applications where nanoWatt sleep currents (below ~50 nA typical) and rapid wake-up times extend operating life. The PIC18F66K40 combines this low-power DNA with rich analog and digital peripheral integration, making it a flexible general-purpose controller. Key features include 64KB self-programmable Flash (via ICSP), 4KB SRAM, 256B EEPROM, a 10-bit ADC2 with up to 16 channels, 5-bit DAC, two comparators with selectable reference, three PWM modules, three CCP modules, CWG, HLT, WWDT, SCAN/CRC for memory integrity, ZCD for AC line sensing, and up to 60 I/O pins. The device supports serial interfaces including I2C, SPI, and EUSART with auto-baud detect, and provides flexible oscillator options including internal 64 MHz HFINTOSC and a 31 kHz LFINTOSC for low-power sleep. Architecturally, the PIC18F66K40 uses Microchip's enhanced 8-bit RISC core with a hardware multiplier, single-cycle instruction execution at 64 MHz (15.6 ns instruction cycle), and a 31-level hardware stack. The integrated CIPs (Core Independent Peripherals) such as CWG, HLT, ZCD, and SCAN/CRC operate without CPU intervention, offloading real-time tasks and freeing the core for higher-level application logic. The 5V tolerance and XLP nanoWatt technology allow direct interfacing with analog and AC-line-powered signals in harsh environments. Typical applications include industrial automation and control, low-power sensor nodes, IoT edge devices, smart energy metering, lighting and ballast control, white goods and home appliances, automotive body and comfort modules (industrial-grade only), and human-machine interface (HMI) panels where the rich peripheral set replaces multiple discrete components. When designing with this MCU, allocate sufficient decoupling (100 nF + bulk) near each VDD pin pair and follow Microchip's TQFP-EP thermal pad layout guidelines if migrating from a non-EP variant. Use ICSP programming pins for in-circuit firmware updates during development. This page synthesizes distributor pricing, drop-in alternatives from the same PIC18 K40 family, and practical design notes not consolidated in the manufacturer datasheet.

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PIC18F66K40-E/PTVAO

PIC18F66K40-E/PTVAO - 64KB Flash 8-bit MCU TQFP-64 | Microchip

The Microchip Technology PIC18F66K40-E/PTVAO is an 8-bit PIC microcontroller from the PIC18F K40 family, delivering 64KB of Flash program memory, 4KB of SRAM, and 1KB of EEPROM in a 64-pin TQFP package. It runs at up to 64 MHz internal core speed, supports 2.3V to 5.5V operation, and integrates Core Independent Peripherals (CIPs) including CWG, WWDT, CRC/SCAN, SMT, HLT, and Zero-Cross Detection. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), volatile data memory (SRAM), EEPROM, and a fixed set of peripherals on one silicon die. The PIC18F K40 family sits in the PIC18 hierarchy as PIC18F -> 8-bit PIC microcontroller -> PIC microcontroller -> microcontroller -> embedded processor. These MCUs target ultra-low-power eXtreme Low Power (XLP) battery designs as well as mainstream 5V general-purpose applications, where rich analog (10-bit ADC with Computation, 5-/8-bit DAC, comparators) and timer-based CIPs replace software loops with hardware state machines. Key differentiating features of the PIC18F66K40 include 64KB self-programmable Flash with device ID/live update, 4KB SRAM, 1KB EEPROM, 10-bit ADC2 with automated Capacitive Voltage Divider (CVD) support, 8-bit DAC, dual comparators with selectable rail-to-rail inputs, 4 CCP/ECCP, 2 UART, 2 SPI, 2 I2C (MSSP), 4 16-bit timers, and a Windowed Watchdog Timer (WWDT). Operating current is approximately 5 mA at 64 MHz / 5V, with sleep currents below 1 uA typical under XLP retention modes. The CIP-rich architecture lets designers implement waveform generation, touch sensing (via mTouch CVD), communications bridging, and motor control without CPU intervention, reducing firmware complexity and BOM cost. Hardware CRC/SCAN and CLC (Configurable Logic Cell) further consolidate glue logic that traditionally required external gates or a companion CPLD. Typical applications include consumer appliances, IoT sensor nodes, white-goods human-machine interfaces, automotive body and interior modules, lighting controllers, and small motor control (BLDC, fan). The 5V-tolerant digital pins and 5V analog rail simplify interface to legacy industrial sensors, while XLP retention supports battery-backed metering and remote controls. Design considerations: at 64 MHz the core draws roughly 5 mA at 5V (~25 mW); a decoupling network of 100 nF + 1 uF + 10 uF near VDD/AVDD is recommended, and unused pins must be configured as outputs low to avoid shoot-through. For programming, MPLAB X IDE with XC8 and the PICkit 4 / ICD 4 / Snap debugger are first-choice tools. This page combines distributor pricing snapshots, drop-in TQFP-64 alternatives, and design notes compiled from the Microchip PIC18F66K40 datasheet family, offering context not aggregated on a single manufacturer page.

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PIC18F66K40-I/MR

PIC18F66K40-I/MR - 64KB Flash 8-bit MCU 64-VQFN | Microchip

The Microchip Technology PIC18F66K40-I/MR is an 8-bit PIC18 microcontroller with 64KB Flash, 64-pin VQFN (9x9 mm) package, 64MHz CPU speed, and eXtreme Low Power (XLP) technology. It belongs to the PIC18F K40 family of low-power, high-performance microcontrollers. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), working memory (RAM), and integrated peripherals. The PIC18F family sits in Microchip's 8-bit portfolio, balancing computational performance with low power consumption. The K40 sub-family adds XLP technology, enabling nanoWatt sleep currents for battery-powered designs. Key features include 64KB Flash program memory, 4KB RAM, 1KB EEPROM, 64MHz operation, up to 12-bit ADC, multiple communication peripherals (UART, SPI, I2C), Core Independent Peripherals such as Configurable Logic Cells (CLC), Complementary Waveform Generator (CWG), and Windowed Watchdog Timer (WWDT). The device operates from 2.3V to 5.5V, with some variants supporting 1.8V minimum for low-voltage applications. The PIC18F66K40 uses a RISC Harvard-architecture CPU with a 16-bit instruction word and 8-bit data path. Its CIPs (Core Independent Peripherals) allow hardware-based state machines without CPU intervention, reducing firmware complexity and enabling deterministic real-time behavior. The 64-VQFN package integrates a thermal pad for improved heat dissipation in space-constrained designs. Typical applications include industrial control, IoT sensor nodes, consumer electronics, automotive body controllers, home automation, and low-power wireless sensor hubs. The XLP feature set makes it especially suitable for battery-backed or energy-harvesting designs. Design consideration: Use the MPLAB X IDE with XC8 compiler. Ensure decoupling capacitors (100nF + 10uF) are placed close to VDD pins, and connect the exposed thermal pad to a ground plane for thermal management. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet alone, providing unique value for engineers selecting the PIC18F66K40-I/MR.

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PIC18F66K40T-E/PTVAO

PIC18F66K40T-E/PTVAO - 64KB Flash, 64MHz 8-bit MCU | Microchip

The Microchip Technology PIC18F66K40T-E/PTVAO is an 8-bit RISC PIC18 microcontroller with 64KB Flash, 4KB RAM and 1KB EEPROM, integrated in a 64-pin TQFP (10x10 mm) package. It runs at a maximum clock speed of 64MHz and supports a supply voltage of 2.3V to 5.5V across an extended automotive temperature range of -40C to +125C, with 60 I/O pins available for peripheral expansion. A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash), data memory (RAM), and peripherals (ADC, timers, communication) into one device. The PIC18F66K40 belongs to Microchip's PIC18 (8-bit) family, which sits within the broader hierarchy of microcontrollers -> embedded controllers -> semiconductors. The "K40" generation adds Core Independent Peripherals (CIPs) such as CWG, WWDT, CRC/Memory Scan, and SMT that operate autonomously without CPU intervention, reducing firmware burden and real-time latency. Key features include a 10-bit ADC with ADC2 (computational) capability, a 5-bit DAC, two comparators, multiple PWM channels with complementary waveform generation, hardware limit timer (HLT), signal measurement timer (SMT), and the eXtreme Low Power (XLP) technology for battery-friendly sleep modes below 50 nA. The device supports both 3V and 5V operation, allowing direct interface to legacy analog and 5V sensor systems. Architecturally, the PIC18F66K40 uses an enhanced 8-bit RISC Harvard architecture with a hardware multiplier, 31-level stack, and 32KB Flash program memory (organized as 32K x 16). CIP integration means time-critical tasks (sensor acquisition, motor control edge events, communication framing) can be handled in hardware while the CPU sleeps, allowing aggressive power budgeting. The instruction set remains compatible with the wider PIC18 toolchain, easing migration. Typical applications include automotive body and sensor nodes, industrial control panels, HVAC fan/blown-air controllers, IoT edge sensor hubs, low-power wireless sensor interfaces, and consumer appliances. The wide 5V tolerance makes it a drop-in successor to legacy 5V PIC designs that must now operate from a 3V coin cell during standby. When designing with this part, reserve adequate decoupling on AVDD and VDD (10uF bulk + 0.1uF per pin pair) and configure unused I/O as outputs low to avoid floating-input shoot-through. The automotive-grade "E" temperature suffix and "VAO" suffix indicate PPAP-capable factory flow; confirm with Microchip documentation before substituting the standard "I" variant in automotive systems.

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PIC18F66K40T-I/MR

PIC18F66K40T-I/MR - 64KB Flash XLP 8-bit MCU, 64-VQFN

The Microchip Technology PIC18F66K40T-I/MR is an 8-bit PIC microcontroller in the PIC18 XLP family, offering 64KB of Flash program memory, 4KB of SRAM, and 256 bytes of EEPROM, housed in a 64-pin VQFN (9x9 mm) package with an exposed thermal pad. The device operates up to 64 MHz, supports 1.8V to 5.5V wide VDD, and integrates Core Independent Peripherals such as CWG, WWDT, CRC/Memory Scan, Hardware CVD, and Zero-Cross Detect. The PIC18F66K40T-I/MR is tape-and-reel packaged and rated for the -40C to +85C industrial temperature range. An 8-bit microcontroller (MCU) is a small computer-on-a-chip that integrates a CPU, non-volatile program memory, volatile data memory, and programmable peripherals onto a single silicon die. 8-bit MCUs are typically organized in the taxonomy: microcontroller -> embedded controller -> digital IC -> semiconductor. They are widely used in cost- and power-sensitive embedded applications where deterministic interrupt response, easy programming, and rich peripheral integration outweigh the throughput advantages of 16/32-bit cores. Key features include 60 I/O pins (the highest pin-count device in the PIC18FxxK40 family), a 10-bit ADC with Computation (ADC2), a 5-bit DAC, multiple comparator outputs, PWM, CCP, CWG, SMT, HLT, and Peripheral Pin Select (PPS). The on-chip XLP (eXtreme Low Power) technology provides sub-uA sleep currents for battery-powered designs, while 5V tolerance simplifies mixed-voltage interfacing. Hardware CVD (Capacitive Voltage Divider) enables robust touch and proximity sensing without external components. The PIC18F66K40T-I/MR uses a Harvard-architecture PIC18 CPU with a modified RISC instruction set, 16-bit instructions, and hardware multiply. Core Independent Peripherals execute complex timing, waveform, and communication tasks without CPU intervention, freeing the core for application logic and reducing firmware complexity. Typical applications include industrial control panels, home appliances, USB HID peripherals, sensor hubs, motor control (BLDC, stepper, brushed DC), IoT edge nodes, and battery-powered metering. Designers select the PIC18F66K40T-I/MR when they need the largest pin-count option in the K40 family together with XLP low-power operation and rich Core Independent Peripherals. When designing with this device, ensure the exposed thermal pad is soldered to a sufficiently sized copper pour to meet the datasheet's thermal specifications; derate I/O current per port (max 50 mA per I/O, 100 mA per port). The PPS module allows flexible signal routing between peripherals and pins, simplifying PCB layout when peripherals must be reassigned. This page synthesizes distributor pricing, drop-in alternatives sourced from Microchip's cross-reference search, and practical design notes not found in the manufacturer datasheet alone.

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PIC18F66K40T-I/PT

PIC18F66K40T-I/PT - 8-Bit 64MHz 64KB Flash MCU TQFP-64 | Microchip

The Microchip Technology PIC18F66K40T-I/PT is an 8-bit PIC18 microcontroller from the eXtreme Low Power (XLP) family, integrating 64 KB of Flash program memory, 3.5 KB of SRAM, and a 64 MHz internal oscillator in a 64-pin TQFP (10x10 mm) package. The device operates from 2.3 V to 5.5 V, supports up to 60 I/O pins, and includes a 10-bit ADC, Core Independent Peripherals (CIPs) such as CWG and WWDT, and on-chip CRC/Memory scan. The "T" suffix indicates tape-and-reel packaging and the "I" grade denotes an industrial -40C to +85C operating range. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, I/O peripherals, and often communication interfaces on one silicon die. The PIC18 architecture is an 8-bit Harvard RISC core enhanced with a 16-bit instruction word, 31-level hardware stack, and linear memory addressing up to 64 KB. MCUs are positioned within the broader taxonomy of embedded computing as programmable logic devices (PLDs) sitting below microprocessors (MPUs) and digital signal controllers (DSCs) in processing capability but above discrete logic in functional integration. Key features of this device include eXtreme Low Power (XLP) technology with sub-uA sleep currents suitable for battery-powered designs, a peripheral pin select (PPS) system that allows remapping of digital peripherals to any I/O, and 5V tolerance on most digital I/O pins. The integrated 64 MHz oscillator eliminates the need for an external crystal in many designs, and the 10-bit ADC with up to 47 channels supports mixed-signal applications. The PIC18F66K40 uses a modified Harvard architecture with separate program Flash and data SRAM buses, allowing simultaneous instruction fetch and data access. Its nanoWatt XLP technology delivers sleep currents below 100 nA in retention modes, and the integrated Core Independent Peripherals (CIPs) - including the Complementary Waveform Generator (CWG), Windowed Watchdog Timer (WWDT), and DMA engine - offload tasks from the CPU to improve efficiency and reduce firmware complexity. Typical applications include industrial sensor interfaces, low-power IoT edge nodes, automotive body and comfort modules, USB and CAN bridging designs, and consumer white goods. The wide 2.3 V to 5.5 V operating range simplifies designs migrating from legacy 5V PIC16/PIC18 systems to modernized low-power platforms. Designers should evaluate the 60 I/O budget carefully against the chosen TQFP-64 footprint and verify that the PPS remapping constraints do not conflict with PCB layout. Programming and debugging are supported through Microchip's MPLAB X IDE and ICD/PICkit tools; ensure the ICSP pinout matches the chosen programming header. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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PIC18F66K80-H/MR

PIC18F66K80-H/MR - 8-bit 64MHz MCU, 64KB Flash, ECAN, AEC-Q100 | Microchip

The Microchip Technology PIC18F66K80-H/MR is an 8-bit PIC18 XLP microcontroller delivering 64 MHz core performance with 64 KB of Flash program memory, 3.6 KB of RAM, and 1 KB of EEPROM, housed in a 64-pin VQFN (9x9 mm) package with exposed thermal pad. It integrates an ECAN controller alongside I2C, LIN, SPI, and UART/USART interfaces and is qualified to the AEC-Q100 automotive standard. A PIC microcontroller (MCU) is a compact single-chip computer built around a Harvard-architecture CPU with on-chip Flash, RAM, EEPROM, and a rich set of peripherals including timers, ADC, communication controllers, and PWM. PIC18F-series MCUs specifically target high-performance 8-bit embedded designs and belong to Microchip's eXtreme Low Power (XLP) family, occupying the hierarchical niche: microcontroller -> 8-bit MCU -> PIC18 family -> automotive-grade XLP line. Key features include an integrated ECAN module for automotive networking, 11 channels of 12-bit ADC, nanoWatt XLP sleep modes, and a wide 1.8 V to 5.5 V operating range. Brown-out detect, low-voltage detect, power-on reset, PWM, and watchdog timer support robust embedded operation, while AEC-Q100 qualification confirms suitability for automotive under-hood and body electronics. The PIC18F66K80-H/MR is built on Microchip's enhanced PIC18 Harvard architecture with a 16-bit instruction word, 8-bit data path, and 31-level hardware stack, achieving 16 MIPS throughput at 64 MHz. Integrated peripherals share internal buses via a bus matrix that allows simultaneous ADC sampling and ECAN message handling without CPU intervention, simplifying real-time control loops. Typical applications include automotive body and chassis control modules, CAN-based sensor networks, building automation controllers, HVAC fan and damper drivers, industrial sensor hubs, and low-power telemetry endpoints. The combination of ECAN, XLP sleep, and 12-bit ADC positions this part for designs that bridge analog sensing and automotive bus communications. Designers should pay attention to the 64-pin VQFN exposed pad, which must be soldered to a ground copper pour to meet the -40 C to +150 C automotive temperature range. Decoupling, ADC reference layout, and ECAN bus termination are the critical PCB topics; pairing this MCU with a 5 V CAN transceiver such as MCP2561 forms a typical node. This page synthesizes XAIPART inventory data, AEC-Q100-compatible drop-in alternatives from Microchip's PIC18F66K80 family, application-specific design notes, and ECAN peripheral pairing guidance - information not assembled on the manufacturer's product page alone.

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PIC18F66K80-H/MR - 8-bit 64MHz MCU, 64KB Flash, ECAN, AEC-Q100 | Microchip