PIC18F1220-I/P - 8-bit 40MHz 4KB Flash MCU | Microchip DIP-18
MPN: PIC18F1220-I/P ✓ Hoạt độngPIC18F1220-I/P Tóm tắt
A PIC microcontroller is a compact programmable computing device built around a Harvard-architecture RISC core with on-chip Flash, RAM and peripherals; it sits in the broader hierarchy of microcontroller -> embedded computing subsystem -> semiconductor IC. The PIC18 family specifically targets higher-performance 8-bit applications where code density, deterministic timing and rich peripherals matter more than raw CPU frequency.
Differentiating features include seven 10-bit ADC channels for mixed-signal sensing, AUSART for asynchronous serial communications, configurable CCP modules for PWM and timing, an internal oscillator that often eliminates the external crystal, and 16 general-purpose I/O pins. Self-programming allows field firmware upgrades, while the ICD interface supports real-time debug without removing the part from the board.
The architecture uses a 16-bit instruction word with an 8-bit data path, an 8 × 8 hardware multiplier and a hardware stack that simplifies interrupt handling. The 40 MHz internal clock (10 MHz instruction rate with the 4-F cycle) delivers approximately 10 MIPS of throughput, while nanoWatt modes cut quiescent current below microamp levels for sleep-heavy applications.
Typical uses include small motor control, sensor front-ends, automotive body electronics, hobby robotics, white-goods user interfaces, low-cost consumer appliances and industrial sensor nodes where the DIP-18 footprint simplifies prototyping. The wide operating temperature range suits outdoor and industrial deployments.
When designing with the PIC18F1220-I/P, plan decoupling with a 100 nF ceramic plus bulk capacitor near VDD, reserve an unused port bit for ICD or programming, and respect the 5.5 V absolute-maximum VDD to avoid latch-up during hot-plug events.
This page combines distributor pricing, drop-in same-package alternatives and practical engineering notes that go beyond the manufacturer datasheet alone to accelerate part selection and BOM risk reduction.
Bộ thay thế dễ dàng lắp đặt cho PIC18F1220-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 PIC18F1220-I/P (cùng hình factor và footprint) — khác nhau ở Package, ADC, Operating Temperature, Program Memory (Flash), Core Architecture.
PIC18F1320-I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F1220-E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F1220-I/P Tỷ lệ tối đa & tính chất điện
| Core | PIC18 8-bit RISC |
| Program Memory (Flash) | 4 KB (2K x 16) |
| RAM | 256 bytes |
| EEPROM | 128 bytes |
| Maximum CPU Frequency | 40 MHz (10 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| I/O Pins | 16 |
| ADC | 10-bit, up to 7 channels |
| Timers | Timer0, Timer1, Timer2, WDT |
| Capture/Compare/PWM | Yes (CCP) |
| Communication | AUSART |
| Oscillator | Internal (also supports external crystal) |
| Self-Programming | Yes (Flash) |
| In-Circuit Debug | Yes (ICD) |
| Hộp | 18-pin PDIP (0.300 in / 7.62 mm) |
| Kiểu lắp đặt | Through-Hole |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Trạng thái RoHS | Compliant (Pb-free) |
| Cấp MSL | 1 (not moisture sensitive) |
Cấu hình chân PIC18F1220-I/P
| Chân 1 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| Chân 2 | RA3/AN3 — Digital I/O / Analog input channel 3 / VREF+ |
| Chân 3 | RA4/AN4 — Digital I/O / Analog input channel 4 |
| Chân 4 | RA5/AN5 — Digital I/O / Analog input channel 5 / VREF- |
| Chân 5 | VSS — Ground reference |
| Chân 6 | OSC1/RA7 — External oscillator input / Digital I/O |
| Chân 7 | OSC2/RA6 — External oscillator output / Digital I/O |
| Chân 8 | MCLR/VPP — Master Clear reset (active low) / Programming voltage |
| Chân 9 | RB0/INT0 — Digital I/O / External interrupt 0 |
| Chân 10 | RB1/INT1 — Digital I/O / External interrupt 1 |
| Chân 11 | RB2 — Digital I/O |
| Chân 12 | RB3/CCP1 — Digital I/O / Capture-Compare-PWM 1 |
| Chân 13 | RB4 — Digital I/O |
| Chân 14 | RB5/PGM — Digital I/O / Low-voltage programming |
| Chân 15 | RB6/PGC — Digital I/O / In-Circuit Debug clock |
| Chân 16 | RB7/PGD — Digital I/O / In-Circuit Debug data |
| Chân 17 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Chân 18 | RA0/AN0 — Digital I/O / Analog input channel 0 |
Ứng dụng tiêu biểu
PIC18F1220-I/P phù hợp cho 6 Áp dụngs: Small Motor Control (DC / Stepper), Industrial Sensor Node, Home Appliance User Interface, Hobby Robotics & Educational Kits, Automotive Body Electronics, Battery-Powered IoT Sensor.
Small Motor Control (DC / Stepper)
The PIC18F1220-I/P suits small brushed DC and unipolar stepper motor control where its 40 MHz / 10 MIPS core, hardware 8x8 multiplier and CCP modules deliver deterministic PWM up to 40 kHz. The 7-channel 10-bit ADC reads back shunt current, back-EMF and potentiometer position in real time, while the AUSART drives RS-485 feedback to a host controller. Placed on a 24 V-derived 5 V rail, the MCU regulates PWM duty, handles soft-start ramps and triggers current-limit shutdown without an extra DSP. The 18-pin PDIP footprint simplifies breadboard prototyping of motor-driver daughterboards and one-off robotics projects.
Được đề xuất
Industrial Sensor Node
Industrial 4-20 mA loop-powered sensor nodes leverage the PIC18F1220-I/P's nanoWatt sleep modes, 10-bit ADC and Industrial -40C to +85C grade. The internal oscillator removes the external crystal on remote nodes, and the 4 KB Flash accommodates sensor-linearization tables. Placed between a 24 V loop-derived 3.3 V rail and a HART or RS-485 transceiver, the MCU performs ratiometric ADC measurements against the internal 2.5 V bandgap and wakes only for scheduled conversions, drawing <1 uA in sleep. The 18-pin PDIP remains popular for hand-soldered retrofit installations inside sensor junction boxes.
Được đề xuất
Home Appliance User Interface
White-goods user-interface boards for washing machines, dishwashers and microwaves use the PIC18F1220-I/P to drive LED indicators, scan capacitive or membrane keypads and run small BLDC pumps. The PIC18F1220's 16 I/O pins directly connect to 7-segment displays, EEPROM-backed setting storage, and a triac-fired load via an optocoupler. With self-programming Flash, manufacturers can issue field firmware updates over the AUSART-connected service port without opening the enclosure. DIP-18 packaging survives wave-solder processes used in high-volume appliance manufacturing.
Được đề xuất
Hobby Robotics & Educational Kits
The PIC18F1220-I/P's DIP-18 footprint is ideal for breadboard-friendly educational robotics kits, Arduino-shield clones and university microcontroller labs. The PIC18 instruction set with C-compiler support (MPLAB XC8) accelerates student coding, while the AUSART bridges to Bluetooth or XBee modules for remote-control projects. The 4 KB Flash accommodates line-following, obstacle-avoidance and PID control routines. The internal oscillator eliminates external clock crystals on low-cost kits, and ICD support enables live debugging on students' prototype boards.
Được đề xuất
Automotive Body Electronics
Inside cabin body controllers - window regulators, mirror adjusters, ambient lighting - the PIC18F1220-I/P reads automotive switch inputs, drives small relays and PWM-dims LEDs through the CCP module. The 5 V-tolerant I/O accepts direct connection to 12 V battery via resistive dividers. Placed on a local regulator with reverse-battery protection, the MCU executes LIN slave protocol over the AUSART for body-network communication, with nanoWatt sleep limiting quiescent current below the automotive key-off budget. Extended-temperature-grade PIC18F1220-E/P is preferred for under-hood environments.
Được đề xuất
Battery-Powered IoT Sensor
Battery-powered wireless sensor endpoints leverage the PIC18F1220-I/P's nanoWatt sleep (sub-microamp) and 2.0 V minimum VDD for 2-cell AA operation. The MCU wakes periodically, reads 10-bit ADC sensor data, transmits via AUSART-connected LoRa or sub-GHz transceiver, and returns to sleep. The 4 KB Flash accommodates sensor calibration tables and a small command shell. Placed on a 2 x AA board with boost regulator, the design achieves multi-year battery life in cold-chain monitoring, agricultural sensing and smart-metering deployments.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F1220-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 | PIC18F1320-I/P | PIC18F1220-E/P | PIC18F1220-I/ML |
|---|---|---|---|---|
| Package | 18-pin PDIP (0.300 in) | 18-pin PDIP - same | 18-pin PDIP - same | 28-pin QFN (ML) - different |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Program Memory | 4 KB (2K x 16) | 8 KB (4K x 16) | 4 KB (2K x 16) | 4 KB (2K x 16) |
| RAM | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Maximum Clock | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
| ADC Channels | 7 x 10-bit | 7 x 10-bit | 7 x 10-bit | 7 x 10-bit |
Bảo phân biệt quan trọng
- Drop-in Flash upgrade without PCB rework (vsPIC18F1320-I/P)
- Extended-temperature option in the same footprint (vsPIC18F1220-E/P)
- Through-hole package simplifies prototyping and repair (vsPIC18F1220-I/ML (QFN-28))
Ghi chú thiết kế
Decouple VDD (pin 17) with a 100 nF X7R ceramic placed within 5 mm of the supply pin and add a 10 uF tantalum or aluminum bulk capacitor at the regulator output. The PIC18F1220-I/P draws peak transient currents during ADC conversions and CCP transitions; insufficient decoupling will cause code-fetch glitches and brown-out resets. For battery-powered designs, ensure the LDO maintains >2.0 V at all transient load steps.
Route the ICSP clock/data signals (RB6/PGC and RB7/PGD) with short, parallel traces and a ground-return path to preserve signal integrity during programming. Avoid routing these traces adjacent to high-current motor or triac outputs. Place the MCLR pull-up (typically 10 kohm) close to the pin to ensure reliable reset behavior; add a 100 nF cap to ground if the MCLR line is long or exposed to ESD.
Do not exceed 5.5 V on any pin or VDD - latch-up events can permanently damage the device. Ensure unused I/O pins are configured as outputs (low) or inputs with internal weak pull-ups enabled to minimize supply current. When migrating from PIC16F to PIC18F instruction set, recompile all code under MPLAB XC8 because the instruction encoding and interrupt-vector structure differ. Reference the PIC18F1220/1320 errata sheet for any silicon anomalies before finalizing the design.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial temperature grade only - not AEC-Q100 qualified; choose automotive-qualified PIC variants if AEC-Q100 is required.
