PIC18F44J11T-I/PT - 8-bit 48MHz 16KB Flash MCU | Microchip
Teilenummer: PIC18F44J11T-I/PT ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $2.97 | $2,97 |
| 10 | $2.71 | $27,10 |
| 100 | $2.38 | $238,00 |
| 500 | $2.1 | $1.050,00 |
| 1.000 | $1.85 | $1.850,00 |
PIC18F44J11T-I/PT Übersicht
A microcontroller (MCU) is a single-chip computer containing a CPU, memory (Flash/RAM/EEPROM), and programmable peripherals. The 8-bit PIC architecture uses a modified Harvard RISC design with separate program and data buses, enabling single-cycle instruction execution at the system clock. The PIC18 family extends the baseline PIC16 instruction set with 16-bit opcodes, larger linear memory addressing (up to 2 MB), and hardware multiply, positioning 8-bit PIC MCUs as low-cost workhorses for consumer, industrial, and IoT applications where 32-bit Cortex-M overhead is unnecessary.
Key features of the PIC18F44J11T-I/PT include 36 I/O pins with Peripheral Pin Select (PPS) for flexible signal routing, a 10-bit ADC with up to 13 channels, two analog comparators, two CCP/ECCP modules, two USART, two MSSP (I2C/SPI), and Deep Sleep mode for sub-microamp standby current. The integrated RTCC and nanoWatt technology allow battery-powered designs to operate for years on a single cell. The 44-TQFP package (10x10 mm) provides ample I/O for human-machine interface and sensor-aggregation designs.
Architecturally, the PIC18F44J11T-I/PT uses a 16-bit instruction word with 8-bit data path, executed at 48 MHz (12 MIPS instruction throughput). Internal oscillator accuracy is factory calibrated to +/- 2%. The device supports self-programmability via ICSP (In-Circuit Serial Programming), enabling firmware updates in the field without removing the chip from the board. Hardware CRC and a programmable 32-bit dead-man timer enhance system reliability in unattended deployments.
Typical applications include low-power sensor nodes, home automation controllers, battery-powered remote controls, industrial telemetry modules, USB/HID peripherals, and small appliance control panels. Designers favor this MCU for its XLP sleep current (~20 nA typical in Deep Sleep) and mature MPLAB X IDE toolchain support. The wide peripheral mix eliminates the need for external ADC, comparator, or RTC chips in many designs.
When designing with this device, verify that the 3.3V rail tolerance aligns with downstream sensors and that PPS reassignments are documented in the firmware header. Brown-out Reset (BOR) and Watchdog Timer (WDT) should be enabled by default for unattended installations. The Deep Sleep current draw of approximately 20 nA makes this MCU well suited for energy-harvesting or coin-cell designs. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.
Drop-in-Alternativen für PIC18F44J11T-I/PT – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PIC18F44J11T-I/PT (gleiche Bauform und Footprint) – abweichend in Operating Temperature, Package, ADC, Communication, Timers.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC18F44J11-I/PT
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC18F44J10T-I/PT
✅ Drop-In✓ Auf Lager
$2.9 / Stück
Datenblatt ansehen →PIC18F44J10-I/PT
✅ Drop-In✓ Auf Lager
$3.1 / Stück
Datenblatt ansehen →PIC18F4431-I/PT
✅ Drop-In✓ Auf Lager
$4.79 / Stück
Datenblatt ansehen →PIC18F4423T-I/PT
✅ Drop-In✓ Auf Lager
$1.97 / Stück
Datenblatt ansehen →PIC18F44J11T-I/PT Grenzwerte & elektrische Eigenschaften
| Core Processor | PIC |
| Core Size | 8-bit |
| Series | PIC XLP 18J |
| Program Memory Type | Flash |
| Program Memory Size | 16 KB (8K x 16) |
| RAM Size | 4 KB |
| Maximum Clock Speed | 48 MHz (12 MIPS) |
| Versorgungsspannung | 2.0 V to 3.6 V |
| I/O Pins | 36 |
| Gehäuse | 44-pin TQFP (PT) 10x10 mm |
| Montageart | Surface Mount |
| ADC | 10-bit, up to 13 channels |
| Betriebstemperatur | -40 C to +85 C (industrial, I suffix) |
| RoHS-Status | Compliant |
| Programming Method | ICSP (In-Circuit Serial Programming) |
PIC18F44J11T-I/PT Pin-Konfiguration
| Pin 1 | MCLR/VPP/RE3 — Master Clear (reset) input or programming voltage; can be used as digital input RE3 |
| Pin 2 | RA0/AN0/C1INA — PORTA bit 0; analog input 0; comparator 1 inverting input |
| Pin 3 | RA1/AN1/C2INA — PORTA bit 1; analog input 1; comparator 2 inverting input |
| Pin 4 | RA2/AN2/VREF- — PORTA bit 2; analog input 2; ADC voltage reference negative |
| Pin 5 | RA3/AN3/VREF+ — PORTA bit 3; analog input 3; ADC voltage reference positive |
| Pin 6 | RA4/T0CKI — PORTA bit 4; Timer0 clock input |
| Pin 7 | RA5/AN4 — PORTA bit 5; analog input 4 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/RA7 — Crystal oscillator input or external clock input; also PORTA bit 7 |
| Pin 10 | OSC2/CLKO/RA6 — Crystal oscillator output or clock output; also PORTA bit 6 |
| Pin 11 | VDD — Positive supply voltage (2.0V to 3.6V) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | RB0/INT0/FLT0 — PORTB bit 0; external interrupt 0; PWM fault input |
| Pin 14 | RB1/INT1 — PORTB bit 1; external interrupt 1 |
| Pin 15 | RB2/INT2 — PORTB bit 2; external interrupt 2 |
| Pin 16 | RB3/INT3 — PORTB bit 3; external interrupt 3 |
| Pin 17 | RB4 — PORTB bit 4 |
| Pin 18 | RB5 — PORTB bit 5 |
| Pin 19 | RB6/PGC — PORTB bit 6; ICSP clock input |
| Pin 20 | RB7/PGD — PORTB bit 7; ICSP data input/output |
| Pin 21 | RC0/T1OSO — PORTC bit 0; Timer1 oscillator output |
| Pin 22 | RC1/T1OSI — PORTC bit 1; Timer1 oscillator input |
| Pin 23 | RC2/CCP1 — PORTC bit 2; Capture/Compare/PWM 1 |
| Pin 24 | RC3/SCK1/SCL1 — PORTC bit 3; SPI clock 1; I2C clock 1 |
| Pin 25 | RC4/SDI1/SDA1 — PORTC bit 4; SPI data in 1; I2C data 1 |
| Pin 26 | RC5/SDO1 — PORTC bit 5; SPI data out 1 |
| Pin 27 | RC6/TX1/CK1 — PORTC bit 6; USART1 asynchronous transmit or synchronous clock |
| Pin 28 | RC7/RX1/DT1 — PORTC bit 7; USART1 asynchronous receive or synchronous data |
| Pin 29 | VSS — Ground reference |
| Pin 30 | VDD — Positive supply voltage (2.0V to 3.6V) |
| Pin 31 | RD0/PSP0 — PORTD bit 0; Parallel Slave Port bit 0 |
| Pin 32 | RD1/PSP1 — PORTD bit 1; Parallel Slave Port bit 1 |
| Pin 33 | RD2/PSP2 — PORTD bit 2; Parallel Slave Port bit 2 |
| Pin 34 | RD3/PSP3 — PORTD bit 3; Parallel Slave Port bit 3 |
| Pin 35 | RD4/PSP4 — PORTD bit 4; Parallel Slave Port bit 4 |
| Pin 36 | RD5/PSP5 — PORTD bit 5; Parallel Slave Port bit 5 |
| Pin 37 | RD6/PSP6 — PORTD bit 6; Parallel Slave Port bit 6 |
| Pin 38 | RD7/PSP7 — PORTD bit 7; Parallel Slave Port bit 7 |
| Pin 39 | VSS — Ground reference |
| Pin 40 | VDD — Positive supply voltage (2.0V to 3.6V) |
| Pin 41 | RE0/RD — PORTE bit 0; Parallel Slave Port read control |
| Pin 42 | RE1/WR — PORTE bit 1; Parallel Slave Port write control |
| Pin 43 | RE2/CS — PORTE bit 2; Parallel Slave Port chip select |
| Pin 44 | AVDD — Analog supply voltage (tied to VDD typically) |
Typische Anwendungen
PIC18F44J11T-I/PT ist geeignet für 6 Anwendungs: Low-Power IoT Sensor Node, Home Automation Controller, Industrial Telemetry Module, Battery-Powered Remote Control, Small Appliance Control Panel, USB HID Peripheral Interface.
Low-Power IoT Sensor Node
The PIC18F44J11T-I/PT's nanoWatt XLP Deep Sleep mode drawing approximately 20 nA makes it ideal for battery-powered IoT sensor nodes that wake periodically to measure and transmit. The 10-bit ADC with up to 13 channels handles multiple sensor inputs (temperature, humidity, battery voltage) without external components, while the 16 KB Flash accommodates over-the-air update firmware with rollback capability. Placed as the central controller with a 3.3V LDO and an I2C sensor, the MCU achieves 10+ year battery life on a single CR2032 coin cell. Unlike 32-bit Cortex-M alternatives, the PIC18F44J11T-I/PT's simpler toolchain reduces firmware development time for cost-sensitive IoT deployments.
Empfohlen
Home Automation Controller
The PIC18F44J11T-I/PT suits home automation hubs that aggregate multiple sensor and actuator interfaces, thanks to its 36 I/O pins with Peripheral Pin Select (PPS) for flexible signal routing. The two USART and two MSSP (I2C/SPI) peripherals handle simultaneous connections to wireless transceivers, displays, and EEPROM storage. Operating from 2.0V to 3.6V, the MCU pairs with 3.3V wireless modules like LoRa or Sub-GHz radios. The 12 MIPS instruction throughput is adequate for protocol parsing and relay control in lighting or HVAC panels, while the integrated 10-bit ADC monitors analog sensors without external ADC chips.
Empfohlen
Industrial Telemetry Module
The PIC18F44J11T-I/PT operates reliably from -40 C to +85 C (industrial grade), making it suitable for factory-floor telemetry modules monitoring motor current, temperature, or vibration. Hardware CRC and the programmable 32-bit dead-man timer enhance reliability in unattended installations, while the 16 KB Flash supports Modbus RTU or CANopen protocol stacks. The integrated 10-bit ADC samples analog signals directly, eliminating external signal-conditioning chips. Combined with an RS-485 transceiver, the MCU provides a robust industrial interface for PLCs and SCADA systems at a fraction of the cost of 32-bit ARM alternatives.
Empfohlen
Battery-Powered Remote Control
The PIC18F44J11T-I/PT's low-power profile makes it ideal for handheld remote controls where battery life outweighs processing performance. Deep Sleep current of ~20 nA combined with fast wake-up (microseconds) allows year-long coin-cell operation. The integrated comparators wake the MCU on user button press without external components, while the 16 KB Flash supports multi-protocol IR or RF transmission with timing-critical routines. The 44-pin TQFP (PT) package is acceptable for compact remote-control PCBs, and the peripheral pin select simplifies PCB layout when I/O assignments change between product variants.
Empfohlen
Small Appliance Control Panel
The PIC18F44J11T-I/PT handles small appliance control (coffee makers, microwaves, fan controllers) by integrating ADC, comparators, and PWM in a single chip. The two CCP/ECCP modules generate PWM signals for motor speed or heater control, while the 10-bit ADC reads temperature or humidity sensors. The 36 I/O pins drive LED indicators, seven-segment displays, and keypad matrices without external drivers. Operating at 3.3V with the industrial temperature range, the MCU tolerates the thermal environment inside appliance enclosures. Its low cost and mature MPLAB X toolchain accelerate time-to-market for consumer appliance designs.
Empfohlen
USB HID Peripheral Interface
The PIC18F44J11T-I/PT implements USB HID-class peripherals (keyboards, mice, game controllers, custom interfaces) via the MSSP peripheral driving an external USB transceiver. While the device lacks native USB, the 48 MHz clock and 12 MIPS throughput handle HID report generation and protocol stack in software. The 4 KB RAM accommodates HID buffers and protocol state, while 16 KB Flash stores device descriptors and application logic. Designers benefit from the integrated comparators for analog input buttons and PWM for LED brightness control. Combined with a low-cost USB 2.0 transceiver, this MCU is a budget alternative to dedicated USB controllers.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC18F44J11T-I/PT – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC18F44J11-I/PT | PIC18F44J10T-I/PT | PIC18F44J10-I/PT | PIC18F4431-I/PT | PIC18F4423T-I/PT |
|---|---|---|---|---|---|---|
| Package | 44-pin TQFP (PT) 10x10 mm | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| RAM Size | 4 KB | 4 KB | 4 KB | 4 KB | 2 KB | 2 KB |
| Maximum Clock Speed | 48 MHz (12 MIPS) | 48 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Supply Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
| Peripheral Pin Select (PPS) | Yes | Yes | Yes | Yes | No | No |
| Lifecycle Status | Active | Active | Active | Active | NRND / EOL | NRND / EOL |
Wichtigste Unterscheidungsmerkmale
- Higher RAM (4 KB vs 2 KB) (vs. PIC18F4431-I/PT)
- NanoWatt XLP Deep Sleep (~20 nA) (vs. PIC18F4423T-I/PT)
- Peripheral Pin Select (PPS) flexibility (vs. PIC18F4431-I/PT)
- Higher CPU throughput (12 MIPS vs 10 MIPS) (vs. PIC18F44J10T-I/PT)
Designhinweise
The PIC18F44J11T-I/PT operates from 2.0V to 3.6V and draws approximately 20 nA in Deep Sleep mode, making it well suited for battery-powered applications. Decouple all VDD/VSS pin pairs with 100 nF ceramic capacitors placed within 5 mm of each pin. For lowest standby current, configure unused I/O as outputs driving low and disable unneeded peripherals via firmware. The on-chip LDO is bypassed via VCAP; connect a 4.7 uF capacitor to the VCAP pin to stabilize the internal 1.8V core regulator.
Route the ICSP signals (PGC/PGD on RB6/RB7) with trace length under 50 mm to ensure reliable in-circuit programming. Keep the MCLR/VPP trace short and avoid routing high-frequency signals near it. The 44-pin TQFP package has 0.8 mm pitch and 10x10 mm body; use a 4-layer PCB with a solid ground plane beneath the device to improve EMI immunity. The exposed thermal pad (if present) should be soldered to the ground plane for thermal dissipation.
Do not apply voltages above 3.6V on VDD or any I/O pin - the J11 family is not 5V tolerant. When migrating from PIC18F4431 (5V) to PIC18F44J11 (3.3V), verify all peripherals are 3.3V compatible or add level shifters. Always enable Brown-out Reset (BOR) in CONFIG words to prevent code corruption during voltage dips. The Peripheral Pin Select (PPS) locks must be unlocked before PPS changes take effect - forgetting this is a common debugging pitfall.
The I2C and SPI peripherals on PIC18F44J11T-I/PT operate reliably at standard mode speeds (100 kHz I2C, 10 MHz SPI). For bus lengths over 100 mm, add series termination resistors (22-33 ohm) near the driver. The ADC accuracy degrades with source impedance above 10 kohm; use an op-amp buffer or keep analog signal traces short and guarded by a ground trace. Avoid routing digital switching signals adjacent to analog inputs (AN0-AN4) on the PCB.
Compliance-Informationen
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified - choose PIC18F family Q-version for automotive. Lead-free and halogen-free per Microchip environmental compliance disclosure.