PIC18F65K40-I/PT - 8-Bit 64MHz 32KB Flash XLP MCU | Microchip
料号： PIC18F65K40-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.65 | $26.50 |
| 100 | $2.4 | $240.00 |
| 500 | $2.2 | $1,100.00 |
| 1,000 | $1.95 | $1,950.00 |
PIC18F65K40-I/PT 概述
What is an 8-bit PIC microcontroller? A PIC (Peripheral Interface Controller) is a Harvard-architecture RISC microcontroller from Microchip Technology that typically executes one instruction per clock cycle (excluding branches), which yields deterministic timing ideal for real-time control. The PIC18 family is the high-performance tier within Microchip's 8-bit portfolio, supporting a C compiler, self-programming Flash, and rich peripheral integration. PIC MCUs are widely used where deterministic control, low cost, and low power outweigh the need for 32-bit performance.
Key features include Core Independent Peripherals such as CWG (Complementary Waveform Generator), WWDT (Windowed Watchdog Timer), CRC/SCAN memory integrity, ZCD (Zero-Cross Detect), a 10-bit ADC with computation (ADC2), a 5-bit DAC, comparators, and PWM/CCP channels. Multiple UART, SPI, and I2C instances cover wired connectivity, and XLP sleep currents below 50 nA extend battery life.
Architecture-wise, the device uses a 16-bit instruction word with an 8-bit data path and a 31-level hardware stack. The internal 64 MHz oscillator can be tuned from 31 kHz to 64 MHz, eliminating external crystals in many designs and shrinking the BOM.
Typical applications include washing-machine and dishwasher control boards, induction-cooktop user interfaces, IoT sensor hubs, HVAC fan controllers, and small-appliance HMI panels where the integrated peripherals drive touch/proximity feedback. The functional-safety peripherals (WWDT, CRC/SCAN) support IEC 60730 class B household-appliance designs.
When designing with this device, place a 100 nF + 10 uF decoupling pair near VDD/AVDD, pull MCLR high through 10 kohm, and reserve PGD/PGC for in-circuit serial programming (ICSP) using Microchip's MPLAB X IDE.
This page synthesizes distributor pricing, drop-in 64-pin TQFP alternatives from the PIC18 family, and practical design notes not collated in the manufacturer datasheet.
直接替换替代料： PIC18F65K40-I/PT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18F65K40-I/PT （相同外形与封装尺寸） ——差异在于 Package, ADC, Operating Temperature, Program Memory (Flash), Core Architecture.
快速对比工具——选择替代料号进行并排对比：
PIC18F66K40-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F65K40-I/MR
✅ 直接替换✓ 有现货
$2.3 / 个
查看数据手册 →PIC18F6585-I/PT
✅ 直接替换✓ 有现货
$6.95 / 个
查看数据手册 →DSPIC33EP512GP504-I/ML
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F65K40-I/PT 最大额定值与电气特性
| Core Architecture | PIC18 8-bit RISC (Harvard) |
| CPU Speed | 64 MHz (max) |
| Program Memory (Flash) | 32 KB (16K x 16 words) |
| RAM | 2 KB |
| EEPROM | 256 B |
| Supply Voltage (VDD) | 1.8 V to 5.5 V |
| I/O Pins | 60 (approx., 64-pin TQFP) |
| ADC | 10-bit ADC2 with computation |
| DAC | 5-bit |
| Comparators | Yes (integrated) |
| PWM Channels | Multiple (CCP/PWM/CWG) |
| Communication | UART, SPI, I2C |
| 封装 | 64-pin TQFP (10x10 mm) |
| 工作温度 | -40C to +85C (industrial) |
| Low-Power Mode (XLP) | Deep-sleep current < 50 nA (typ.) |
| Instruction Word | 16-bit |
| Hardware Stack | 31 levels |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
PIC18F65K40-I/PT 引脚配置
| 引脚 1 | RB2 — I/O port B bit 2 |
| 引脚 2 | RB3 — I/O port B bit 3 |
| 引脚 3 | RB4 — I/O port B bit 4 |
| 引脚 4 | RB5 — I/O port B bit 5 |
| 引脚 5 | RB6 — ICSPCLK / I/O port B bit 6 |
| 引脚 6 | RB7 — ICSPDAT / I/O port B bit 7 |
| 引脚 7 | RC0 — I/O port C bit 0 |
| 引脚 8 | RC1 — I/O port C bit 1 |
| 引脚 9 | RC2 — I/O port C bit 2 |
| 引脚 10 | RC3 — I/O port C bit 3 |
| 引脚 11 | RC4 — I/O port C bit 4 |
| 引脚 12 | RC5 — I/O port C bit 5 |
| 引脚 13 | RC6 — I/O port C bit 6 |
| 引脚 14 | RC7 — I/O port C bit 7 |
| 引脚 15 | VSS — Ground |
| 引脚 16 | RD0 — I/O port D bit 0 |
| 引脚 17 | RD1 — I/O port D bit 1 |
| 引脚 18 | RD2 — I/O port D bit 2 |
| 引脚 19 | RD3 — I/O port D bit 3 |
| 引脚 20 | RD4 — I/O port D bit 4 |
| 引脚 21 | RD5 — I/O port D bit 5 |
| 引脚 22 | RD6 — I/O port D bit 6 |
| 引脚 23 | RD7 — I/O port D bit 7 |
| 引脚 24 | VSS — Ground |
| 引脚 25 | RE0 — I/O port E bit 0 |
| 引脚 26 | RE1 — I/O port E bit 1 |
| 引脚 27 | RE2 — I/O port E bit 2 |
| 引脚 28 | RE3 — I/O port E bit 3 |
| 引脚 29 | RE4 — I/O port E bit 4 |
| 引脚 30 | RE5 — I/O port E bit 5 |
| 引脚 31 | RE6 — I/O port E bit 6 |
| 引脚 32 | RE7 — I/O port E bit 7 |
| 引脚 33 | AVDD — Analog supply |
| 引脚 34 | AVSS — Analog ground |
| 引脚 35 | RA0 — I/O port A bit 0 |
| 引脚 36 | RA1 — I/O port A bit 1 |
| 引脚 37 | RA2 — I/O port A bit 2 |
| 引脚 38 | RA3 — I/O port A bit 3 |
| 引脚 39 | RA4 — I/O port A bit 4 |
| 引脚 40 | RA5 — I/O port A bit 5 |
| 引脚 41 | RA6 — I/O port A bit 6 |
| 引脚 42 | RA7 — I/O port A bit 7 |
| 引脚 43 | VSS — Ground |
| 引脚 44 | OSC1 — Crystal oscillator input |
| 引脚 45 | OSC2 — Crystal oscillator output |
| 引脚 46 | VDD — Digital supply |
| 引脚 47 | RF0 — I/O port F bit 0 |
| 引脚 48 | RF1 — I/O port F bit 1 |
| 引脚 49 | RF2 — I/O port F bit 2 |
| 引脚 50 | RF3 — I/O port F bit 3 |
| 引脚 51 | RF4 — I/O port F bit 4 |
| 引脚 52 | RF5 — I/O port F bit 5 |
| 引脚 53 | RF6 — I/O port F bit 6 |
| 引脚 54 | RF7 — I/O port F bit 7 |
| 引脚 55 | RG0 — I/O port G bit 0 |
| 引脚 56 | RG1 — I/O port G bit 1 |
| 引脚 57 | RG2 — I/O port G bit 2 |
| 引脚 58 | RG3 — I/O port G bit 3 |
| 引脚 59 | RG4 — I/O port G bit 4 |
| 引脚 60 | MCLR — Master clear / programming voltage (active low) |
| 引脚 61 | VDD — Digital supply |
| 引脚 62 | VSS — Ground |
| 引脚 63 | RB0 — I/O port B bit 0 |
| 引脚 64 | RB1 — I/O port B bit 1 |
典型应用
PIC18F65K40-I/PT 适用于 6 应用s: Washing Machine Control Board, Induction Cooktop User Interface, IoT Sensor Hub, HVAC Fan Controller, Small Appliance HMI Panel, Industrial Sensor Transmitter.
Washing Machine Control Board
The PIC18F65K40-I/PT drives washing machine motor and HMI logic with 60 available I/O and XLP deep-sleep below 50 nA between cycles. Its 10-bit ADC2 with computation simplifies water-temperature and motor-current sensing, and the CWG peripheral handles the synchronous-rectification timing for switch-mode motor drivers. The 32 KB Flash comfortably fits motor-control state machines, IEC 60730 class B self-test routines, and user-interface code. Per Microchip, the WWDT plus CRC/SCAN blocks meet functional-safety requirements for household appliances.
推荐
Induction Cooktop User Interface
The PIC18F65K40-I/PT powers induction-cooktop touch-pad sensing through its integrated comparators and Zero-Cross Detect, simplifying AC-line zero-cross timing without external circuitry. Operating from 1.8 V to 5.5 V, the MCU interfaces directly with 3.3 V display drivers and 5 V relay drivers. The CWG peripheral generates precise gate-drive waveforms for IGBTs at multi-kHz frequencies. According to Microchip, the device's industrial -40 to +85 C range covers the harsh under-counter thermal environment, and the 64-pin TQFP offers ample I/O for multi-zone control.
推荐
IoT Sensor Hub
The PIC18F65K40-I/PT acts as a battery-powered IoT sensor hub, leveraging XLP deep-sleep below 50 nA between periodic sensor acquisitions. With 32 KB Flash and 2 KB RAM, the MCU runs FreeRTOS or a simple scheduler, manages UART/SPI/I2C sensors, and forwards data over UART to a Wi-Fi or BLE module. According to Microchip, the internal 64 MHz oscillator eliminates an external crystal, reducing BOM cost and PCB area. The wide 1.8 V to 5.5 V supply simplifies direct operation from a Li-ion or 2xAA battery stack.
推荐
HVAC Fan Controller
The PIC18F65K40-I/PT regulates HVAC fan speed through PWM channels and senses temperature with the 10-bit ADC2 with computation. Its integrated comparators enable overcurrent protection on the motor driver without additional analog ICs, and the WWDT handles the IEC 60730 class B self-test requirement. Per Microchip's functional-safety documentation, the CRC/SCAN peripherals provide memory integrity checking required by HVAC equipment standards. The 64-pin TQFP gives ample I/O for multi-speed relay banks and user-interface switches.
推荐
Small Appliance HMI Panel
The PIC18F65K40-I/PT drives small-appliance HMI panels with capacitive-touch sensing, LED matrix backlighting, and rotary encoders. The 60 available I/O pins accommodate multi-key touch pads, multi-digit seven-segment displays, and buzzer PWM, while the CWG peripheral generates zero-noise audio tones. Per Microchip's marketing material, the 5-bit DAC is useful for setting contrast bias on LCD displays. The 1.8-5.5 V supply supports both battery-powered blenders and line-powered coffee makers with no external LDO.
推荐
Industrial Sensor Transmitter
The PIC18F65K40-I/PT conditions and digitizes industrial sensor inputs - 4-20 mA loops, thermocouples, and strain gauges - using its 10-bit ADC2 with computation. The integrated 5-bit DAC generates excitation voltage for ratiometric bridges, and multiple UART/SPI/I2C channels handle HART or Modbus protocol stacks. According to Microchip, the industrial temperature grade -40 to +85 C and the WWDT ensure stable operation in industrial field cabinets. The 32 KB Flash and 2 KB RAM are sufficient for floating-point linearization and full Modbus-RTU implementation.
推荐
推荐产品汇总
工程参考数据： PIC18F65K40-I/PT ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC18F66K40-I/PT | PIC18F65K40-I/MR | PIC18F6585-I/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (10x10 mm) | 64-pin TQFP (10x10 mm) - same | 64-pin QFN (9x9 mm) - same die, different footprint | 64-pin TQFP (10x10 mm) - same |
| Flash Memory | 32 KB | 64 KB | 32 KB | 48 KB |
| RAM | 2 KB | 2 KB | 2 KB | 3.5 KB |
| EEPROM | 256 B | 256 B | 256 B | 1 KB |
| CPU Max Speed | 64 MHz | 64 MHz | 64 MHz | 40 MHz |
| Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.0 V to 5.5 V |
| XLP Sleep Current | < 50 nA | < 50 nA | < 50 nA | Not specified (no XLP) |
| CWG Peripheral | Yes | Yes | Yes | No |
| CRC/SCAN | Yes | Yes | Yes | No |
关键差异点
- Core Independent Peripherals reduce CPU load （对比 PIC18F6585-I/PT)
- XLP deep-sleep current below 50 nA （对比 PIC18F6585-I/PT)
- Higher 64 MHz CPU speed （对比 PIC18F6585-I/PT)
- 10-bit ADC2 with computation offloads math （对比 PIC18F6585-I/PT)
设计说明
Decouple each VDD/AVDD pair with a 100 nF ceramic capacitor placed within 5 mm of the pin, and add a bulk 10 uF X7R capacitor at the supply entry point. Pin 43, 24, and 15 are VSS ties; route all to a single ground plane to reduce digital switching noise coupling into analog. Per Microchip, sharing analog and digital ground without a star topology can degrade ADC2 accuracy by 2-3 LSB at high CPU loads.
Reserve the RB6/RB7 pins (5/6) as ICSPCLK and ICSPDAT for in-circuit serial programming - do not use them for user I/O without isolating the programmer. Per Microchip documentation, MCLR (60) requires a 10 kohm pull-up to VDD; if MCLR is left floating, the device can enter unintended resets under EMI. For production programming through ICD3 or PICkit, design the board with a 6-pin ICSP header that bypasses the application circuit.
When migrating firmware from PIC18F45K22 to PIC18F65K40, verify that pin RC6 (used for UART TX) is not configured as an analog input - the new ADC2 with computation can silently activate analog buffering on unconfigured pins, adding 1-2 uA of supply current. Estimated: ADC2 analog leakage on uninitialized pins can add ~1.5 uA per active channel at 25 C. Disable unused analog channels via the ANSELD/ANSELG registers in initialization code, per Microchip errata documents.
The internal 64 MHz oscillator eliminates external crystals in most designs, but is rated at +/- 2% accuracy and drifts with temperature. For UART communication above 57600 baud, calibrate the OSCTUNE register using a precision timer or use the secondary timer1 oscillator with a 32.768 kHz crystal. Per Microchip, factory-calibrated HFINTOSC accuracy is +/- 2% across 0 to +85 C, sufficient for slow UART and SPI but not for USB or CAN.
At 64 MHz CPU speed drawing ~20 mA from 5 V, the 64-pin TQFP package dissipates ~100 mW with theta_JA ~50 C/W, yielding a junction temperature rise of only 5 C above ambient. Estimated: at -40 C ambient max load, junction temperature remains well below the 125 C max - thermal management is rarely a concern. No heatsink or thermal vias are required for this 8-bit MCU in typical appliance designs.
合规信息
Per Microchip product page, the PIC18F65K40-I/PT is RoHS compliant, lead-free (Pb-free matte tin finish), and halogen-free. It is NOT AEC-Q100 qualified - it is industrial grade -40 to +85 C, not automotive grade. For automotive applications, contact Microchip for AEC-Q100 variants of the PIC18 K40 family.
