PIC18F66K40-E/PT - 64KB Flash 8-bit XLP MCU | Microchip
MPN: PIC18F66K40-E/PT ✓ Hoạt độngPIC18F66K40-E/PT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC18F66K40-E/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18F66K40-E/PT (cùng hình factor và footprint) — khác nhau ở ADC, Package, Operating Temperature, Program Memory (Flash), I/O Pins.
PIC18F66K40-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F66K40T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F67K40-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F65K40-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F66K22-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F66K40-E/PT Tỷ lệ tối đa & tính chất điện
| Core | PIC18 8-bit RISC (enhanced Harvard) |
| Instruction Cycle Speed | 64 MHz (15.6 ns instruction cycle) |
| Program Flash | 64 KB |
| RAM | 4 KB |
| EEPROM | 256 B |
| Số chân | 64 |
| Hộp | TQFP-64 (PT) 10x10 mm |
| Supply Voltage (VDD) | 1.8 V to 5.5 V |
| Nhiệt độ hoạt động | -40 C to +125 C (Industrial, -E grade) |
| I/O Pins | Up to 60 |
| ADC | 10-bit ADC2, up to 16 channels |
| DAC | 5-bit |
| Comparators | 2 with selectable reference |
| PWM Modules | 3 |
| CCP Modules | 3 |
| Core Independent Peripherals | CWG, HLT, WWDT, SCAN/CRC, ZCD |
| Serial Interfaces | I2C, SPI, EUSART (auto-baud) |
| Oscillator | 64 MHz HFINTOSC, 31 kHz LFINTOSC, PLL, external |
| Technology Family | PIC XLP (eXtreme Low Power) nanoWatt |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
| Cấp MSL | 3 (168 hours) |
Cấu hình chân PIC18F66K40-E/PT
| Chân 1 | RC0 — Digital I/O / SOSCO (SOS oscillator output) |
| Chân 2 | RC1 — Digital I/O / SOSCI (SOS oscillator input) |
| Chân 3 | RC2 — Digital I/O / CCP1 |
| Chân 4 | RC3 — Digital I/O / SCL1 (I2C clock) |
| Chân 5 | RC4 — Digital I/O / SDA1 (I2C data) |
| Chân 6 | RC5 — Digital I/O / SDO1 (SPI data out) |
| Chân 7 | RC6 — Digital I/O / TX1 (EUSART transmit) |
| Chân 8 | RC7 — Digital I/O / RX1 (EUSART receive) |
| Chân 9 | RE0 — Digital I/O / PWM3 |
| Chân 10 | RE1 — Digital I/O / PWM4 |
| Chân 11 | RE2 — Digital I/O |
| Chân 12 | RE3 — Digital I/O |
| Chân 13 | RA0 — Digital I/O / AN0 (ADC2 input) |
| Chân 14 | RA1 — Digital I/O / AN1 |
| Chân 15 | RA2 — Digital I/O / AN2 / VREF- |
| Chân 16 | RA3 — Digital I/O / AN3 / VREF+ |
| Chân 17 | RA4 — Digital I/O / AN4 |
| Chân 18 | RA5 — Digital I/O / AN5 |
| Chân 19 | RA6 — Digital I/O / OSC2 (crystal output) |
| Chân 20 | RA7 — Digital I/O / OSC1 (crystal input) |
| Chân 21 | VDD — Positive supply voltage |
| Chân 22 | VSS — Ground reference |
| Chân 23 | RB0 — Digital I/O / AN12 / ZCD |
| Chân 24 | RB1 — Digital I/O / AN10 / C1IN1- |
| Chân 25 | RB2 — Digital I/O / AN8 / C1IN2- |
| Chân 26 | RB3 — Digital I/O / AN9 / C2IN1- |
| Chân 27 | RB4 — Digital I/O / AN11 |
| Chân 28 | RB5 — Digital I/O / AN13 |
| Chân 29 | RB6 — Digital I/O / ICSPCLK (programming clock) |
| Chân 30 | RB7 — Digital I/O / ICSPDAT (programming data) |
| Chân 31 | VDD — Positive supply voltage |
| Chân 32 | VSS — Ground reference |
| Chân 33 | RC0 — Digital I/O |
| Chân 34 | RD0 — Digital I/O |
| Chân 35 | RD1 — Digital I/O |
| Chân 36 | RD2 — Digital I/O |
| Chân 37 | RD3 — Digital I/O |
| Chân 38 | RD4 — Digital I/O |
| Chân 39 | RD5 — Digital I/O |
| Chân 40 | RD6 — Digital I/O |
| Chân 41 | RD7 — Digital I/O |
| Chân 42 | VSS — Ground reference |
| Chân 43 | VDD — Positive supply voltage |
| Chân 44 | RF0 — Digital I/O |
| Chân 45 | RF1 — Digital I/O / AN6 |
| Chân 46 | RF2 — Digital I/O / AN7 |
| Chân 47 | RF3 — Digital I/O / AN14 |
| Chân 48 | RF4 — Digital I/O / AN15 |
| Chân 49 | RF5 — Digital I/O / AN16 |
| Chân 50 | RF6 — Digital I/O / AN17 |
| Chân 51 | RF7 — Digital I/O |
| Chân 52 | RG0 — Digital I/O |
| Chân 53 | RG1 — Digital I/O |
| Chân 54 | RG2 — Digital I/O |
| Chân 55 | RG3 — Digital I/O |
| Chân 56 | RG4 — Digital I/O |
| Chân 57 | RG5 — Digital I/O |
| Chân 58 | RG6 — Digital I/O |
| Chân 59 | RG7 — Digital I/O |
| Chân 60 | VSS — Ground reference |
| Chân 61 | VDD — Positive supply voltage |
| Chân 62 | RA0 — Digital I/O |
| Chân 63 | RA1 — Digital I/O |
| Chân 64 | RA2 — Digital I/O |
Ứng dụng tiêu biểu
PIC18F66K40-E/PT phù hợp cho 6 Áp dụngs: Industrial Automation and Control, Low-Power IoT Sensor Nodes, Smart Energy Metering, Lighting and Ballast Control, Home Appliance and White Goods HMI, Automotive Body and Comfort Modules.
Industrial Automation and Control
The PIC18F66K40-E/PT is well suited to industrial automation because its 64 KB Flash and 4 KB RAM accommodate Modbus RTU / CANopen-style state machines, while its -40 C to +125 C industrial temp grade tolerates factory-floor heat. The 10-bit ADC2 with up to 16 channels reads 4-20 mA loop signals via shunt resistors; the 5-bit DAC drives analog setpoints to motor controllers; and three PWM plus three CCP modules generate the timing signals for stepper or BLDC commutation. The integrated CWG (Complementary Waveform Generator) with hardware dead-band produces anti-shoot-through gate drive for half-bridges without software latency. ZCD (Zero-Cross Detect) senses AC-line zero crossings for synchronous triac firing in heater or solenoid drivers, eliminating inrush and EMI.
Được đề xuất
Low-Power IoT Sensor Nodes
The PIC18F66K40-E/PT is a strong fit for battery-powered IoT sensor nodes thanks to its XLP nanoWatt technology, with sleep currents typically below 50 nA on the 31 kHz LFINTOSC and rapid wake-up to 64 MHz via HFINTOSC plus PLL. The 10-bit ADC2 can sample thermistor, photodiode, or soil-moisture sensors directly, while Core Independent Peripherals (HLT, ZCD, SCAN/CRC) handle event-driven sensing and memory integrity checks without CPU intervention, keeping the core asleep. The EUSART with auto-baud detect interfaces to sub-GHz transceivers or Wi-Fi co-processors over UART, and the 4 KB RAM is sufficient for LoRaWAN / Zigbee stacks. Two comparators with selectable reference enable threshold-based wake-up from sleep on sensor excursions.
Được đề xuất
Smart Energy Metering
The PIC18F66K40-E/PT fits smart energy metering because its ZCD (Zero-Cross Detect) peripheral senses AC mains zero crossings to synchronize energy accumulation without CPU load, and its 5-bit DAC plus two comparators support calibration and tamper detection on current shunts or CTs. The 64 KB Flash accommodates IEC 62053-21/22 metering algorithms and DLMS/COSEM-style communication stacks, while 4 KB RAM buffers measurement samples between transmissions. The CWG peripheral can drive a solid-state relay with anti-shoot-through protection for load switching, and the WWDT (Windowed Watchdog Timer) with SCAN/CRC detects firmware corruption in unattended field installations. 1.8-5.5 V VDD allows direct Li-ion or 3.6 V Li-SOCl2 battery operation.
Được đề xuất
Lighting and Ballast Control
The PIC18F66K40-E/PT is well matched to LED drivers and electronic ballasts because its 3 PWM modules plus the CWG (Complementary Waveform Generator) generate the high-frequency switching waveforms for boost/PFC stages and the half-bridge lamp drivers, while the ZCD synchronizes to the AC line for valley-fill PFC and dimmer phase-cut detection. The 10-bit ADC2 reads LED current via sense resistors to implement constant-current feedback loops, and the 5-bit DAC sets dimming targets in 32 brightness steps or 0-10 V analog dim inputs. Hardware Limit Timer (HLT) provides deterministic PWM shutdown on overcurrent events within microseconds - critical for Class 2 safety isolation in LED luminaires.
Được đề xuất
Home Appliance and White Goods HMI
The PIC18F66K40-E/PT suits white-goods HMI panels because its 60 I/O pins can directly scan a 7-segment or matrix keypad plus drive up to 60 LEDs or 8-digit 7-segment displays without external logic. The EUSART, SPI, and I2C peripherals connect to segment LCD drivers, Wi-Fi modules for smart-appliance connectivity, and the main appliance control board; the on-board 5-bit DAC drives audio beepers for end-of-cycle alerts. Core Independent Peripherals like CWG and HLT handle motor-control interlocks and over-temperature shutdowns autonomously, while the -40 C to +125 C industrial temp grade tolerates the oven, dishwasher, or refrigerator compartments. 64 KB Flash supports multi-language UI strings and OTA-capable firmware updates.
Được đề xuất
Automotive Body and Comfort Modules
The PIC18F66K40-E/PT is appropriate for non-safety automotive body and comfort modules such as interior lighting controllers, seat-position memories, mirror adjusters, and rain/light sensors, thanks to its 5V tolerance, -40 C to +125 C industrial temp grade, and integrated CAN-ready peripherals (via EUSART + external CAN controller). The 10-bit ADC2 reads potentiometers for seat position, photodiodes for auto-headlight dim, and thermistors for cabin climate; the CWG drives small DC motor bridges with anti-shoot-through protection; and the 64 KB Flash stores calibration tables and fault logs. WWDT and SCAN/CRC meet the reliability expectations of body-electronics ECU firmware. For safety-critical ADAS or powertrain, migrate to AEC-Q100-qualified parts.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F66K40-E/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18F66K40-I/PT | PIC18F66K40T-I/PT | PIC18F67K40-I/PT | PIC18F65K40-I/PT | PIC18F66K22-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (PT) 10x10 mm | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same |
| Program Flash | 64 KB | 64 KB | 64 KB | 128 KB | 64 KB | 64 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Max CPU Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| I/O Pins | 60 | 60 | 60 | 60 | 50 | 53 |
| Temperature Grade | -40C to +125C (-E) | -40C to +85C (-I) | -40C to +85C (-I) | -40C to +85C (-I) | -40C to +85C (-I) | -40C to +85C (-I) |
| Core Independent Peripherals | CWG, HLT, WWDT, SCAN/CRC, ZCD | CWG, HLT, WWDT, SCAN/CRC, ZCD - same | CWG, HLT, WWDT, SCAN/CRC, ZCD - same | CWG, HLT, WWDT, SCAN/CRC, ZCD - same | CWG, HLT, WWDT, SCAN/CRC, ZCD - same | Missing CWG, HLT, SCAN/CRC, ZCD |
| Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
Bảo phân biệt quan trọng
- Full -40C to +125C industrial temperature grade at the same die (vsPIC18F66K40-I/PT)
- Doubles to 128 KB Flash on the same TQFP-64 footprint (vsPIC18F67K40-I/PT)
- Adds 4 new Core Independent Peripherals vs older K22 family (vsPIC18F66K22-I/PT)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor as close as possible to each VDD pin pair (pin 21/22, pin 31/32, pin 42/43, pin 60/61) and a single 10 uF bulk capacitor near the largest VDD cluster. The PIC18F66K40-E/PT has four VDD/VSS pairs distributed across the TQFP-64 footprint to reduce ground bounce; ignoring the inner pairs typically manifests as ADC2 noise or PWM jitter under load. For battery operation add a 10 uF hold-up capacitor on VDD to survive sleep-to-active current transients up to ~10 mA.
Estimated: at maximum 64 MHz CPU clock with all peripherals active and GPIO toggling, the PIC18F66K40-E/PT draws roughly 10-15 mA from VDD (~50 mW at 3.3 V). The TQFP-64 (PT) 10x10 mm package has a theta_JA around 45-50 C/W on a 4-layer 1 oz PCB with no thermal pad, meaning a junction temperature rise of ~3 C above ambient. In enclosed industrial enclosures above 60 C ambient, derate the clock to 32 MHz or add a small copper flood under the exposed pad (if migrating from an EP variant) to keep Tj under the 125 C max.
Do not leave the ICSP/ICD pins (RB6/RB7) floating in production designs without 10 kohm pull-ups; some programmers require these to be pulled low/high during reset entry. The MCLR pin (RE3 on this package) must have a 10-50 kohm pull-up to VDD for normal operation and a 100 nF cap to ground for ESD robustness; leaving it floating prevents the device from exiting Reset. When migrating from PIC18F66K22 code, verify that the new K40 peripheral names (CWG, HLT, ZCD, SCAN/CRC) are configured correctly - register addresses differ between the K22 and K40 families.
Route the 16 MHz external crystal traces (RA6/RA7) as short and symmetric as possible, with a ground guard ring on both sides and ground flood on the layer below. Keep ADC2 analog traces (AN0-AN17) away from PWM and PWM3/PWM4 switching traces; use a 100 nF + 10 uF RC anti-aliasing filter on analog inputs that switch impedance mid-sampling. Place the 31 kHz LFINTOSC crystal or external 32.768 kHz watch crystal away from the HFINTOSC trace to avoid beat-frequency coupling that can wake the device falsely from sleep.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Lead-free and halogen-free packaging. The -E temperature grade is industrial (-40 C to +125 C) but the part is NOT AEC-Q100 qualified; for AEC-Q100 automotive safety applications use a Q-qualified PIC18 derivative instead.
