PIC18F46K22-I/P - 8-bit 64MHz 64KB Flash MCU 40-PDIP | Microchip
MPN: PIC18F46K22-I/P ✓ Hoạt độngPIC18F46K22-I/P Tóm tắt
What is an 8-bit microcontroller? An 8-bit MCU is a single-chip computer that processes data 8 bits at a time and integrates CPU, RAM, non-volatile program memory (Flash), peripherals, and I/O on one die. Microcontrollers occupy a position in the embedded hierarchy beneath microprocessors (MPU) and above discrete logic; PIC18 sits within Microchip's 8-bit PIC portfolio and is widely used for cost-sensitive, deterministic, low-to-medium-complexity embedded control.
Key features include 36 digital I/O pins, a 12-bit ADC with up to 30 input channels, multiple PWM/capture/compare modules, EUSART, MSSP (SPI/I2C), comparators, and a hardware RTCC. The device operates from 1.8 V to 5.5 V across the family, with this "F" (Flash) variant rated for 2.3 V to 5.5 V and the deep-sleep current as low as 20 nA (typical) per the XLP nanoWatt specification.
Architecturally, the PIC18F46K22 uses an enhanced Harvard bus with a 16-bit instruction word and 8-bit data path, supports hardware multiply, and offers self-reprogrammable Flash under software control. The "-I/P" suffix indicates the industrial temperature grade (-40 °C to +85 °C) and the 40-pin PDIP package, which remains popular for breadboard prototype and educational use.
Typical applications include consumer appliance controls, sensor signal conditioning, low-power battery nodes, USB-less Human Interface Devices, motor-control BLDC/FOC peripherals, and industrial instrumentation front-ends. The combination of wide I/O count, generous ADC channel count, and XLP low-power makes the part flexible across many embedded roles.
When designing with this MCU, budget I/O current: per-pin source/sink is rated 25 mA, with a total package budget of 200 mA. A 0.1 µF decoupling capacitor within a few millimeters of VDD is essential, and an external 4 MHz to 48 MHz crystal (or internal oscillator) drives the system clock.
This page synthesizes XAIPART distributor pricing, verified drop-in alternatives, design notes, and pinout diagrams not found in any single datasheet, supporting faster board bring-up and procurement decisions.
Bộ thay thế dễ dàng lắp đặt cho PIC18F46K22-I/P — 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 PIC18F46K22-I/P (cùng hình factor và footprint) — khác nhau ở Package, ADC, Timers, Operating Temperature, Core Architecture.
PIC18F45K22-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F4620-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F458-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F46K22-I/P Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC18 8-bit |
| Program Memory (Flash) | 64 KB (32K x 16 words) |
| SRAM | 3,896 B |
| EEPROM | 256 B |
| Maximum CPU Frequency | 64 MHz (16 MIPS) |
| Supply Voltage (F variant) | 2.3 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 12-bit, up to 30 channels |
| Timers | 7 (TMR0-TMR6) |
| PWM Modules | 5 CCP / 6 ECCP (capture/compare/PWM) |
| Communication | 2x EUSART, 2x MSSP (SPI / I2C) |
| Comparators | 2 (with CVREF) |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Hộp | 40-pin PDIP (P) |
| Low-Power Feature | nanoWatt XLP (deep sleep ~20 nA) |
Cấu hình chân PIC18F46K22-I/P
| Chân 1 | MCLR/RE3/AN15 — Master Clear (reset) input or digital I/O; can also be AN15 analog input on this package |
| Chân 2 | RA0/AN0 — PORTA bit 0 / analog input AN0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / analog input AN1 |
| Chân 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input AN2 / negative ADC reference |
| Chân 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input AN3 / positive ADC reference |
| Chân 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input (open-drain on this device) |
| Chân 7 | RA5/AN4 — PORTA bit 5 / analog input AN4 |
| Chân 8 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| Chân 9 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Chân 10 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Chân 11 | VDD — Positive supply (2.3 V to 5.5 V for this variant) |
| Chân 12 | VSS — Ground reference |
| Chân 13 | RB3/CCP2 — PORTB bit 3 / CCP2 input/output |
| Chân 14 | RB4 — PORTB bit 4 (interrupt-on-change capable) |
| Chân 15 | RC0 — PORTC bit 0 |
| Chân 16 | RC1 — PORTC bit 1 |
| Chân 17 | RC2 — PORTC bit 2 |
| Chân 18 | RB5 — PORTB bit 5 (interrupt-on-change capable) |
| Chân 19 | RB6/PGC — PORTB bit 6 / ICSP clock (and interrupt-on-change) |
| Chân 20 | RB7/PGD — PORTB bit 7 / ICSP data (and interrupt-on-change) |
| Chân 21 | RC3/SCL — PORTC bit 3 / I2C clock (MSSP) |
| Chân 22 | RC4/SDA — PORTC bit 4 / I2C data (MSSP) |
| Chân 23 | RC5/SDO — PORTC bit 5 / SPI data out (MSSP) |
| Chân 24 | RC6/TX/CK — PORTC bit 6 / EUSART async TX or sync clock |
| Chân 25 | RC7/RX/DT — PORTC bit 7 / EUSART async RX or sync data |
| Chân 26 | RC8/CCP6 — PORTC bit 8 (only on 40/44 pin parts) / CCP6 |
| Chân 27 | RB0 (alternate numbering noted in datasheet) — Note: PORTB fully used; refer to datasheet Table 1-4 for exact pin mapping in DIP |
| Chân 28 | RD0 — PORTD bit 0 |
| Chân 29 | RD1 — PORTD bit 1 |
| Chân 30 | RD2 — PORTD bit 2 |
| Chân 31 | VSS — Ground reference (second VSS pin) |
| Chân 32 | VDD — Positive supply (second VDD pin) |
| Chân 33 | RD3 — PORTD bit 3 |
| Chân 34 | RC9/CCP7 — PORTC bit 9 / CCP7 |
| Chân 35 | RE0/RD — PORTE bit 0 (read control for PSP) |
| Chân 36 | RE1/WR — PORTE bit 1 (write control for PSP) |
| Chân 37 | RE2/CS — PORTE bit 2 (chip-select control for PSP) |
| Chân 38 | RD4 — PORTD bit 4 |
| Chân 39 | RD5 — PORTD bit 5 / alternate ICSP data |
| Chân 40 | RD6/TX2 — PORTD bit 6 / EUSART2 TX |
Ứng dụng tiêu biểu
PIC18F46K22-I/P phù hợp cho 6 Áp dụngs: Industrial Sensor Interface & PLC Front-End, Battery-Powered Remote Sensor / IoT Node, Consumer Appliance Control (Washing / Coffee / HVAC), Educational & Hobby Embedded Development Board, BLDC / PMSM Motor Drive (Low-Power), Human-Machine Interface (Keypad + LCD + Buzzer).
Industrial Sensor Interface & PLC Front-End
The PIC18F46K22-I/P is well-suited to industrial sensor front-ends and small PLC input modules, where its 12-bit ADC with up to 28 usable analog channels (per the 40-PDIP pinout) and dual EUSART (RS-232/RS-485 via external transceiver) handle 4-20 mA loops, thermocouples, and bridge sensors. The 64 KB Flash and 3.9 KB SRAM are enough for PID loop firmware plus Modbus RTU stacks, while the wide 2.3 V to 5.5 V supply tolerates 24 V industrial rails after LDO regulation. Estimated power draw at 5 V/16 MIPS is roughly 12 mA active and 20 nA in deep-sleep, enabling low-heat fanless enclosures typical of factory automation. Companion parts: MCP2551 (CAN transceiver, if migrating to PIC18F458), MCP1501 (precision voltage reference for ADC), TC427 (buffer to drive industrial loads).
Được đề xuất
Battery-Powered Remote Sensor / IoT Node
The PIC18F46K22-I/P's nanoWatt XLP feature set is the key enabler for battery-powered IoT nodes: deep-sleep current of approximately 20 nA (typical, with WDT disabled) lets a node sleep most of its life, while periodic RTCC wake-ups trigger an ADC read and EUSART packet in single-digit microamp averages. The 2.3 V minimum supply aligns directly with 2x AA alkaline or NiMH packs, eliminating boost converter losses. Estimated battery life with a 10-minute sleep cycle and 2500 mAh alkaline pack exceeds 5 years. The wide ADC channel count (up to 28 analog inputs via the 40-PDIP pinout) supports multi-sensor boards (temperature, humidity, light). Companion parts: MCP1700 (LDO for stable 3.3 V), MCP9808 (digital temp sensor for calibration), MCP1640 (boost if 3V logic needed on remote end).
Được đề xuất
Consumer Appliance Control (Washing / Coffee / HVAC)
The PIC18F46K22-I/P suits consumer white-goods main controls where cost per board is decisive: 64 KB Flash hosts UI state machines, 5 CCP / 6 ECCP modules drive triac-controlled heaters, pumps, and BLDC motors, and the 36 I/O pins are sufficient for keypads, 7-segment or TFT panels, and rotary encoders. nanoWalt XLP keeps standby power below 0.5 W to meet modern energy regulations (EU 1275/2008, ENERGY STAR). The industrial -40 C to +85 C temperature grade tolerates the warm inside of dishwashers, microwaves, or motor enclosures. Estimated BOM-related controller cost drops materially versus Cortex-M0 alternatives because development does not require external crystals and the internal 16 MHz RC is accurate enough. Companion parts: MCP14E11E (dual high-side driver), TC4427 (gate buffer for TRIAC), MCP9700 (onboard temp sensor for thermal foldback).
Được đề xuất
Educational & Hobby Embedded Development Board
The PIC18F46K22-I/P is one of the most common PIC18F DIP-package choices on the market for breadboard-friendly development and university microcontroller courses, alongside the smaller-pin PIC18F14K22. The 40-PDIP package drops into standard 40-pin ZIF sockets and breakout boards without surface-mount rework. MPLAB X + XC8 + PICkit 5 form the canonical development triangle; a student can prototype, debug, and re-flash without designing a custom PCB. Pin-to-pin compatibility with PIC18F45K22-I/P and PIC18F4620-I/P gives instructors a roadmap to teach memory-tier trade-offs. Companion parts: PICkit 5 (PG164140) for ICSP, MCP9700 or MCP9808 for an analog or I2C sensor learning module, 24LC256 EEPROM for the I2C lab sequence. Estimated student-friendly setup cost is well under $100 fully assembled.
Được đề xuất
BLDC / PMSM Motor Drive (Low-Power)
The PIC18F46K22-I/P hosts a BLDC or PMSM low-power FOC firmware when paired with external gate drivers and shunt resistors, thanks to 6 ECCP channels with programmable dead-time and hardware fault shutdown. 64 KB Flash fits sensorless / sensored 6-step BLDC plus FOC libraries for pumps, fans, e-bike auxiliary motors, or small appliances. The 5 CCP / 6 ECCP peripheral set exposes complementary PWM pairs with center-aligned modes favored for FOC; the integrated 12-bit ADC captures BEMF zero-cross and current-sense signals synchronously with PWM edges. At 16 MIPS instruction throughput, FOC current loops settle within ~30 µs. Companion parts: MCP14C040 (gate driver), TC427 (inverter buffer), MCP6L01 op-amp for current-sense conditioning, MCP9700 for winding temp monitoring. Estimated BOM-friendly controller cost makes it competitive in sub-100 W motor drives.
Được đề xuất
Human-Machine Interface (Keypad + LCD + Buzzer)
The PIC18F46K22-I/P is a natural choice for non-USB Human-Machine Interfaces because its 36 digital I/O pins cover matrix keypads up to 4x5, character-LCD interfaces in 4-bit mode, encoder inputs, status LEDs, and a buzzer driver all from one MCU. MSSP in SPI mode talks to TFT or OLED displays that lack parallel interfaces, while the dual EUSART supports a debug console plus an external Bluetooth module (HC-05-class via UART). The 64 KB Flash is sufficient for full menu/UI firmware with multiple language tables; the 3.9 KB SRAM handles input buffering without external memory. Companion parts: MCP79410 (RTCC for time-stamped UI events), TC4427 (LED/buzzer buffer), 24LC256 (settings store in non-volatile EEPROM). Estimated as a one-chip HMI controller with minimal external glue.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F46K22-I/P — 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 | PIC18F45K22-I/P | PIC18F46K22-I/PT | PIC18F4620-I/P | PIC18F458-I/P | PIC18F46K20-I/PT |
|---|---|---|---|---|---|---|
| Package | 40-pin PDIP (P) | 40-pin PDIP (P) - same | 44-pin TQFP (PT) - different | 40-pin PDIP (P) - same | 40-pin PDIP (P) - same | 44-pin TQFP (PT) - different |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 64 KB | 32 KB (-50%) | 64 KB (same) | 64 KB (same) | 32 KB (-50%) | 64 KB (same) |
| SRAM | 3,896 B | 3,896 B (same) | 3,896 B (same) | 3,968 B (~same) | 1,536 B (-61%) | 3,896 B (same) |
| Max CPU Frequency | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) - same | 64 MHz (16 MIPS) - same | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 64 MHz (16 MIPS) - same |
| ADC Resolution / Channels | 12-bit / up to 28 ANx (40-PDIP) | 12-bit / up to 28 ANx (40-PDIP) | 12-bit / up to 30 ANx (44-TQFP) | 10-bit / up to 8 ANx | 10-bit / 8 ANx | 12-bit / up to 30 ANx |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V - same | 2.3 V to 5.5 V - same | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 1.8 V to 5.5 V |
| nanoWatt XLP Low-Power | Yes (deep-sleep ~20 nA) | Yes - same | Yes - same | No (legacy) | No (legacy) | Yes - same |
| Hardware Peripherals | 5 CCP / 6 ECCP, 7 timers, 2 EUSART, 2 MSSP, 2 comparators | Same as target | Same as target | 1 CCP/2 ECCP, 4 timers, 1 EUSART, 1 MSSP | 1 CCP, 3 timers, 1 EUSART, 1 CAN, no ECCP | 5 CCP / 6 ECCP, 7 timers, 2 EUSART, 2 MSSP |
| Industrial Temp Grade | -40 C to +85 C (I grade) | -40 C to +85 C - same | -40 C to +85 C - same | -40 C to +85 C - same | -40 C to +85 C - same | -40 C to +85 C - same |
Bảo phân biệt quan trọng
- Highest Flash density in the 40-PDIP PIC18F K22 family (vsPIC18F45K22-I/P)
- Modern peripherals (5 CCP / 6 ECCP, dual EUSART, dual MSSP, nanoWatt XLP) (vsPIC18F4620-I/P)
- Through-hole package availability for breadboard and educational use (vsPIC18F46K22-I/PT (44-TQFP))
- Higher 16 MIPS instruction throughput vs 10 MIPS legacy PIC18F (vsPIC18F458-I/P)
Ghi chú thiết kế
Decouple each VDD pin with a 100 nF X7R ceramic placed within 5 mm of the package lead; add a 10 µF bulk capacitor on the supply rail to handle in-rush when ECCP modules switch external MOSFETs. For nanoWatt designs, gate unused peripherals in software rather than relying on disconnected pins because many PIC18F modules leak even in sleep. Brown-Out Reset (BOR) is recommended enabled for the 2.3 V minimum variant to prevent flash corruption on slow power ramps.
Estimated power dissipation at 5 V / 16 MIPS active mode is approximately 12 mA and approximately 20 nA in deep-sleep; thermal rise is negligible in PDIP-40 because die power is low, but board-level thermal coupling in enclosed appliances can still move ambient above 85 C - keep the MCU away from heatsinks, TRIAC loads, and transformers. For motor-drive applications, route PWM signals (CCP1-CCP6) as length-matched traces from the MCU to the gate-driver inputs to avoid shoot-through from mismatched propagation delay.
Keep ICSP pins PGC/PGD (RB6/RB7) accessible at the board edge and unbypassed by 1k-ohm resistor networks that block programming - the ICSP interface requires direct CMOS-level drive. For 40-PDIP prototype boards, use a 40-pin ZIF socket so PIC18F45K22, PIC18F4620, and PIC18F458 can be interchanged without rework. Place the oscillator crystal and load capacitors within 5 mm of OSC1/OSC2 with a ground guard ring to reduce EMI susceptibility in noisy industrial environments.
The 12-bit ADC achieves rated 100K SPS only with acquisition time tuned to source impedance (TACQ ≈ 2 µs for 10 kΩ source per the datasheet). Use a unity-gain op-amp buffer (e.g., MCP6L01) on high-impedance sensors or thermocouples; if bypassing is not possible, average multiple ADC samples. Keep digital switching traces (PWM, EUSART) more than 5 cm from analog traces around the ANx pins, or place a ground guard trace between them to reduce digital crosstalk into the SAR ADC.
Do not mistake the LF suffix - PIC18LF46K22-I/P runs from 1.8 V to 3.6 V only, while the F variant (this part) runs from 2.3 V to 5.5 V. Confusing the two destroys LF parts at 5 V. Also note that on this 40-PDIP pinout, ADC channels AN8-AN15 are shared with PORTB and PORTE digital pins; configure them as analog inputs via ANSEL before ADC reads or readings will be railed. The MCLR pin is sampled on every reset and must not be left floating - tie to VDD through a 10 kΩ resistor with a 100 nF cap for noise immunity.
Thông tin tuân thủ
RoHS and lead-free confirmed per Microchip product family PCN history; industrial I-grade operating range -40 C to +85 C. AEC-Q100 automotive variants exist in the same family under different suffixes (e.g., PIC18F46K22-I/PTVAO).
