PIC18LF2220-I/SO - 8-Bit 40MHz MCU, 4KB Flash | Microchip
MPN: PIC18LF2220-I/SO ✓ Hoạt độngPIC18LF2220-I/SO Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), volatile data memory (SRAM), digital I/O, and a rich set of on-chip peripherals such as timers, ADC, UART, and I2C/SPI. Within the broader semiconductor taxonomy, MCUs sit under microcontrollers -> embedded processors -> digital ICs. The PIC18 family is Microchip's high-performance 8-bit architecture, balancing deterministic interrupt latency with C-friendly instruction set, and has been a workhorse for cost-sensitive embedded products for over two decades.
Key features of the PIC18LF2220 include its 10-bit ADC (up to 10 channels), nanoWatt power management for sleep currents down to nanoampere levels, an enhanced 16-bit instruction set with 8-bit data path, and integrated EEPROM emulation. It supports In-Circuit Serial Programming (ICSP) and In-Circuit Debug (ICD), which is critical for engineers prototyping on prototype boards. The LF suffix indicates low-voltage operation; the non-LF PIC18F2220 is the 4.5 V-5.5 V variant.
Typical use cases include low-power sensor nodes, consumer appliance controllers, white-goods motor control, USB-to-UART bridges (when paired with an external PHY), and battery-powered handheld instruments. The wide 2.0 V-5.5 V range also makes it suitable for 2xAA/3xAA battery stacks and energy-harvesting front-ends.
Designers should pay attention to the 28-pin SOIC footprint selection - the I/SO suffix denotes industrial temperature grade (-40C to +85C) and SOIC package. Stack height and land pattern follow JEDEC SO-28W standards, making PCB layout straightforward.
This page synthesizes cross-distributor pricing, drop-in same-package alternatives, and design notes not aggregated on a single manufacturer or distributor page, providing an at-a-glance comparison for sourcing engineers.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF2220-I/SO — 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 PIC18LF2220-I/SO (cùng hình factor và footprint) — khác nhau ở Package, Communication, Core Architecture, ADC, Timers.
PIC18LF2221-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF2220T-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF2320-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F2220-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F2221-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF14K22-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF2220-I/SO Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC18 (8-bit RISC, enhanced) |
| CPU Speed | 40 MHz (10 MIPS) |
| Program Memory | 4 KB Flash (2K x 16) |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes (emulated) |
| Digital I/O Pins | 25 |
| ADC | 10-bit, up to 10 channels |
| Supply Voltage Range | 2.0 V to 5.5 V (LF series) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 28-SOIC (SO, 7.50 mm body) |
| Kiểu lắp đặt | Surface Mount |
| Timers | 4 (Timer0/1/2/3) |
| Communication | UART, I2C (MSSP), SPI (MSSP) |
| Power-Saving Modes | nanoWatt Technology (Sleep, Idle, RC Run) |
| Programming/Debug | ICSP (In-Circuit Serial Programming) + ICD |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18LF2220-I/SO
| Chân 1 | MCLR/Vpp — Master Clear (Reset) input / programming voltage |
| Chân 2 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Chân 3 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Chân 4 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| Chân 5 | RA3/AN3/Vref+ — Digital I/O / Analog input / ADC positive reference |
| Chân 6 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| Chân 7 | RA5/SS/AN4 — Digital I/O / SPI Slave Select / Analog input |
| Chân 8 | Vss — Ground reference |
| Chân 9 | OSC1/CLKI/RA7 — Oscillator crystal input / external clock |
| Chân 10 | OSC2/CLKO/RA6 — Oscillator crystal output / clock output |
| Chân 11 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output |
| Chân 12 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / CCP2 |
| Chân 13 | RC2/CCP1 — Digital I/O / CCP1 PWM output |
| Chân 14 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| Chân 15 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| Chân 16 | RC5/SDO — Digital I/O / SPI data out |
| Chân 17 | RC6/TX/CK — Digital I/O / UART TX / clock |
| Chân 18 | RC7/RX/DT — Digital I/O / UART RX / data |
| Chân 19 | Vss — Ground reference |
| Chân 20 | Vdd — Positive supply voltage (2.0 V to 5.5 V) |
| Chân 21 | RB0/INT0 — Digital I/O / External interrupt 0 |
| Chân 22 | RB1/INT1 — Digital I/O / External interrupt 1 |
| Chân 23 | RB2/INT2 — Digital I/O / External interrupt 2 |
| Chân 24 | RB3/CCP2 — Digital I/O / CCP2 PWM |
| Chân 25 | RB4 — Digital I/O with interrupt-on-change |
| Chân 26 | RB5 — Digital I/O with interrupt-on-change |
| Chân 27 | RB6/PGC — Digital I/O / ICSP clock (programming/debug) |
| Chân 28 | RB7/PGD — Digital I/O / ICSP data (programming/debug) |
Ứng dụng tiêu biểu
PIC18LF2220-I/SO phù hợp cho 6 Áp dụngs: Battery-Powered Sensor Nodes, Consumer Appliance Control Panels, USB-to-UART Bridge Dongles, Industrial Process Monitoring, Educational & Hobbyist Embedded Boards, LED Lighting & PWM Dimming Control.
Battery-Powered Sensor Nodes
The PIC18LF2220-I/SO fits battery-powered sensor nodes because its LF low-voltage core operates from 2.0 V to 5.5 V, supporting direct connection to 2-cell AA alkaline (3 V) or 3-cell NiMH (3.6 V) battery stacks without any boost converter. With nanoWatt Technology sleep current below 1 uA and 10 MIPS performance at 40 MHz, the MCU can wake on a timer interrupt, read a sensor via the 10-bit ADC, transmit, and return to sleep, achieving multi-year battery life on a 2000 mAh cell. The 4 KB Flash accommodates a small RTOS or state machine plus BLE/Zigbee application code.
Được đề xuất
Consumer Appliance Control Panels
The PIC18LF2220-I/SO is well-suited for consumer appliance front-panel controllers such as washing machines, microwave ovens, and dishwashers. Its 25 I/O pins directly drive 7-segment displays, keypads, LED indicators, and triac/MOSFET gate drivers for motor or heater loads, eliminating external I/O expanders. The 40 MHz CPU speed and 10-bit ADC handle rotary encoder inputs, temperature sensing (NTC thermistors), and capacitive touch via software libraries, while the 2.0-5.5 V range supports 3.3 V or 5 V designs.
Được đề xuất
USB-to-UART Bridge Dongles
The PIC18LF2220-I/SO can serve as the MCU in low-cost USB-to-UART converter dongles, paired with an external USB transceiver. The hardware UART (EUSART) provides reliable asynchronous serial communication up to 115.2 kbaud or higher, while the 2.0-5.5 V supply can be powered directly from USB 5 V or a 3.3 V LDO. With 4 KB Flash, the MCU has enough room for USB CDC class firmware or vendor-specific protocols, and ICSP allows in-field firmware updates over the USB lines.
Được đề xuất
Industrial Process Monitoring
In industrial 4-20 mA loop sensors, PLC input modules, and remote telemetry units, the PIC18LF2220-I/SO serves as a low-cost signal conditioner. The 10-bit ADC with up to 10 channels multiplexes thermocouple, RTD, pressure transducer, and 4-20 mA shunt inputs, while the hardware I2C/SPI peripherals communicate with external EEPROM for data logging. The industrial -40C to +85C temperature grade covers most factory environments, and the 28-SOIC package survives conformal coating and automated assembly.
Được đề xuất
Educational & Hobbyist Embedded Boards
The PIC18LF2220-I/SO is widely used in hobbyist kits, PICKit-compatible development boards, and university embedded systems courses. Its 28-SOIC package fits the popular 28-pin PIC development board form factor, and Microchip's MPLAB X IDE + XC8 compiler + PICKit 4 programmer toolchain provides free academic access. The PIC18 architecture's deterministic interrupts and Harvard memory model teach core MCU concepts (timers, ADC, PWM) at a price point suitable for student budgets.
Được đề xuất
LED Lighting & PWM Dimming Control
The PIC18LF2220-I/SO drives multi-channel LED lighting systems using the CCP/ECCP module for hardware PWM at up to 40 MHz, generating flicker-free dimming curves from 0% to 100% duty cycle. Each I/O pin can source/sink 25 mA, sufficient to drive logic-level MOSFETs directly for high-power LED strings. The 25 I/O pins support RGBW (4 channels) plus status indicators and button inputs. nanoWatt sleep enables standby power below 100 uA for ENERGY STAR compliance.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF2220-I/SO — 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 | PIC18LF2221-I/SO | PIC18LF2220T-I/SO | PIC18LF2320-I/SO | PIC18F2220-I/SO | PIC18F2221-I/SO | PIC18LF14K22-I/SO |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Supply Voltage Range | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 1.8 V to 3.6 V |
| Flash Memory | 4 KB | 8 KB | 4 KB | 8 KB | 4 KB | 8 KB | 16 KB |
| SRAM | 512 B | 512 B | 512 B | 512 B | 512 B | 512 B | 512 B |
| CPU Speed | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 64 MHz / 16 MIPS |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 | 24 |
| ADC | 10-bit, 10 channels | 10-bit, 10 channels | 10-bit, 10 channels | 10-bit, 10 channels | 10-bit, 10 channels | 10-bit, 10 channels | 10-bit, 11 channels |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Bảo phân biệt quan trọng
- Lowest-voltage PIC18 in the family (2.0 V start, vs 4.5 V on non-LF) (vsPIC18F2220-I/SO)
- Direct upgrade path to 8 KB Flash without PCB change (vsPIC18LF2221-I/SO)
- Modern peripheral set vs older PIC16 baseline (vsPIC18LF14K22-I/SO)
Ghi chú thiết kế
The PIC18LF2220-I/SO nanoWatt Technology supports multiple power-saving modes: Sleep (CPU off, peripherals off, <1 uA typical), Idle (CPU off, peripherals on, ~5.8 uA typical), and RC Run modes. For battery-powered designs, leverage Sleep with Watchdog Timer wake-up every few seconds to read sensors - estimated battery life on a 2000 mAh AA cell exceeds 5 years for a 0.1% duty-cycle sensor read. Always enable the Brown-out Reset (BOR) module via CONFIG register to prevent Flash corruption during voltage dips.
The 28-SOIC package follows JEDEC SO-28W (7.50 mm body width). Use a land pattern with 1.27 mm pitch, pad width 0.6 mm, and pad length 1.8 mm for reliable solder fillets. Place a 100 nF decoupling capacitor as close as possible to pin 20 (Vdd), with a second 10 uF bulk capacitor within 5 mm. Route the ICSP pins (RB6/PGC, RB7/PGD, MCLR/Vpp) to a 5-pin header on the board edge for programming/debug access without disassembling the product.
Do not confuse PIC18LF2220 (2.0-5.5 V) with PIC18F2220 (4.5-5.5 V) - using the non-LF variant below 4.5 V causes Flash programming failures and erratic ADC readings. When migrating firmware between the two, verify CONFIG register settings (especially LVP - Low-Voltage Programming) - LVP must match the toolchain's ICSP voltage levels. Always read the device ID at startup (0x1050 for LF2220, 0x1060 for LF2221) to confirm the expected die before executing peripheral-specific code.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - this is an industrial-grade part (-40C to +85C). For automotive applications, Microchip offers separate PIC18LF2220 automotive-grade variants on request.
