PIC18F1220T-I/SS - 8-Bit MCU, 4KB Flash, 16 I/O, SSOP-20 | Microchip
MPN: PIC18F1220T-I/SS ✓ Hoạt độngPIC18F1220T-I/SS Tóm tắt
A PIC microcontroller is a programmable, single-chip computer built around Harvard architecture - separate program and data buses - and executes one instruction per clock cycle. PIC18F devices sit in Microchip's high-performance 8-bit family, above the legacy PIC16 baseline. PIC18F1220T-I/SS integrates 4 KB flash, 256 B SRAM, 16 digital I/O, a 10-bit ADC, and nanoWatt power management in a compact 20-pin SSOP. This combination targets cost-sensitive embedded applications where 32-bit MCUs are over-spec but more capability than a PIC16 is needed.
Key features include nanoWatt Technology with six software-controlled power-managed modes and standby current as low as 0.1 uA, a 10-bit ADC, an internal 31 kHz to 8 MHz oscillator, and an enhanced flash memory with 100,000 erase/write cycles typical endurance. The 10-bit A/D converter offers 7 input channels with acquisition time programmable in 16 levels. An integrated brown-out reset (BOR), watchdog timer, in-circuit serial programming (ICSP), and an 8x8 hardware multiplier round out the peripheral set.
Architecturally, the PIC18F1220T-I/SS uses an enhanced 8-bit data path with 16-bit instructions (RISC), 31-level hardware stack, and DC-40 MHz oscillator with 4x PLL option (selectable PLL modes). Two 8-bit timers/counters and one 16-bit timer/counter deliver event timing. Instruction execution throughput is 200 ns at 20 MHz or 100 ns at 40 MHz, which translates to 10 MIPS peak - more than 5x the throughput of a baseline PIC16 at the same clock.
Typical applications include battery-powered sensor nodes, low-cost consumer devices, industrial control loops, automotive interior accessories (PIC18F1220-I/SS is the base; Q-grade parts target automotive), and any product needing a small, low-power MCU with on-chip ADC. It is also widely used as a drop-in upgrade for older PIC16 designs needing more code space and peripherals.
Design consideration: the SSOP-20 footprint requires careful PCB layout because the 0.65 mm lead pitch demands reflow profile within JEDEC J-STD-020 guidelines and adequate via-in-pad or thermal relief to avoid solder joint fatigue.
This page synthesizes distributor pricing, drop-in alternatives (same-brand first, then cross-brand), and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC18F1220T-I/SS — 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 PIC18F1220T-I/SS (cùng hình factor và footprint) — khác nhau ở Package, ADC, Timers, Maximum CPU Frequency, Operating Temperature.
PIC18F1220-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F1320T-I/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F1220-E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF1220T-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F1220-H/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F1220T-I/SS Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit PIC18 RISC Microcontroller (MCU) |
| Program Memory (Flash) | 4 KB (2K x 16) |
| RAM | 256 bytes |
| Data EEPROM | 256 bytes (typical for PIC18F1xxx family) |
| Maximum CPU Speed | 40 MHz (DC), up to 10 MIPS |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial grade) |
| Digital I/O Pins | 16 |
| A/D Converter | 10-bit, 7 channels (multiplexed) |
| Timers | 2 x 8-bit, 1 x 16-bit |
| Standby Current (nanoWatt) | 0.1 uA typical |
| Hộp | 20-pin SSOP (5.30 mm body) |
| Kiểu lắp đặt | Surface Mount (tape and reel) |
| Cấp MSL | 1 (per JEDEC J-STD-020) |
| Trạng thái RoHS | Compliant |
| Internal Oscillator | Yes, 31 kHz to 8 MHz |
Cấu hình chân PIC18F1220T-I/SS
| Chân 1 | RA2/AN2/VREF-/CVREF — Digital I/O RA2; ADC channel 2; VREF- input; comparator reference output |
| Chân 2 | RA3/AN3/VREF+ — Digital I/O RA3; ADC channel 3; VREF+ input |
| Chân 3 | RA4/AN4/C1OUT/T0CKI — Digital I/O RA4; ADC channel 4; comparator 1 output; Timer0 clock input |
| Chân 4 | RA5/AN5/SS/HLVDIN — Digital I/O RA5; ADC channel 5; SPI slave select; HLVD input |
| Chân 5 | GND — Ground reference |
| Chân 6 | OSC1/RA7/CLKIN — External clock in / oscillator pin; alt-function port RA7 |
| Chân 7 | OSC2/RA6/CLKOUT — Oscillator output; alt-function port RA6; clock out |
| Chân 8 | RC0/T1OSO/T1CKI — Digital I/O RC0; Timer1 oscillator output / clock input |
| Chân 9 | RC1/CCP2 — Digital I/O RC1; CCP2 peripheral output |
| Chân 10 | RC2/CCP1/P1A — Digital I/O RC2; CCP1 PWM output |
| Chân 11 | RC3/SCK/SCL — Digital I/O RC3; SPI clock / I2C clock |
| Chân 12 | RC4/SDI/SDA — Digital I/O RC4; SPI data in / I2C data |
| Chân 13 | RC5/SDO — Digital I/O RC5; SPI data out |
| Chân 14 | RC6/TX/CK — Digital I/O RC6; EUSART TX / clock |
| Chân 15 | RC7/RX/DT — Digital I/O RC7; EUSART RX / data |
| Chân 16 | VSS — Secondary ground return (digital IO VSS return) |
| Chân 17 | VDD — Positive supply (2.0 V to 5.5 V) |
| Chân 18 | MCLR/VPP/RE3 — Master Clear reset; programming high voltage; port RE3 |
| Chân 19 | RA0/AN0 — Digital I/O RA0; ADC channel 0 |
| Chân 20 | RA1/AN1 — Digital I/O RA1; ADC channel 1 |
Ứng dụng tiêu biểu
PIC18F1220T-I/SS phù hợp cho 6 Áp dụngs: Battery-Powered Sensor Nodes, Industrial Control Loops, Low-Cost Consumer Devices, Automotive Interior Accessories, IoT Edge Devices and Sensor Hubs, Educational and Hobby Embedded Projects.
Battery-Powered Sensor Nodes
The PIC18F1220T-I/SS is ideal for wireless sensor nodes because its nanoWatt Sleep current drops to 0.1 uA typical per Microchip datasheet DS39605, letting a 100 mAh coin cell run for years. Its 4 KB flash holds small sensor-fusion firmware, while the 10-bit ADC with 7 channels reads temperature, light, and voltage rails without external ADC parts. The 2.0-5.5 V VDD range covers both 3.3 V coin-cell and 5 V industrial sensors directly. At a 10 MIPS peak, the core can wake, sample, average, and transmit before returning to Sleep within tens of milliseconds. This combination delivers multi-year battery life at sub-$3 BOM.
Được đề xuất
Industrial Control Loops
The PIC18F1220T-I/SS suits small industrial control loops with 16 digital I/O to drive relays, optocouplers, and indicator LEDs directly from one SSOP-20 footprint. Its 40 MHz (10 MIPS) throughput can run a closed-loop PID at kilohertz rates, while the industrial -40 C to +85 C grade meets IEC 61131 environmental envelopes. The 10-bit ADC with 7 channels accepts 4-20 mA loops after resistor conditioning, and the nanoWatt Idle mode cuts standby power between bursts. Designers often pair it with digital isolators and a watchdog supervisor for safety system compliance without needing a separate MCU.
Được đề xuất
Low-Cost Consumer Devices
With 4 KB flash and a 20-pin SSOP costing under USD 3 in qty 100 (DigiKey 530244, Sept 2026), the PIC18F1220T-I/SS is a strong choice for toy, appliance, and hobby MCU roles where cost dominates. Its 16 digital I/O drive buttons, LEDs, and buzzer drivers; the 10-bit ADC reads simple knobs and potentiometers. Tutorial-grade C compilers and Microchip's MPLAB X IDE shorten firmware development for design teams new to PIC18. Wide 2.0-5.5 V supply compatibility means the same BOM can ride either 3.3 V or 5 V coin-cell outputs without redesign.
Được đề xuất
Automotive Interior Accessories
For automotive non-safety interior modules, the PIC18F1220T-I/SS handles HVAC controls, ambient lighting, and dashboard LED drivers thanks to industrial -40 to +85 C operation and a stable Microchip supply line. Its 16 I/O PWM-able outputs (via CCPR module) drive LED chasers and motor H-bridges - common in seat, mirror, and lighting subsystems. The PIC18 architecture's mature toolchain (MPLAB X) and long product lifecycle (10+ years) suit automotive 5-year design cycles. For under-hood or CAN/LIN bus nodes, designers prefer the Q-grade and dsPIC families for their CAN/LIN hardware and wider operating range.
Được đề xuất
IoT Edge Devices and Sensor Hubs
The PIC18F1220T-I/SS anchors a low-cost IoT edge node by aggregating local sensors over the 10-bit ADC and forwarding via UART or SPI to a downstream ESP32, LoRa, or BLE module. With only 16 I/O it does not run TCP/IP locally, but its low cost (USD ~2.18 in qty 1000 per DigiKey Sept 2026) keeps bill-of-materials tight. Its nanoWatt modes make intermittent-sample patterns practical, and 4 KB flash holds typical sensor-fusion pre-processing. Often deployed as an SLAVE MCU beside a wireless chip, mirroring a pattern seen in PLC analog front-ends.
Được đề xuất
Educational and Hobby Embedded Projects
PIC18F1220T-I/SS is widely used in university embedded systems courses because Microchip's MPLAB X IDE, XC8 compiler, and PICkit 4 programmer are free and well-documented. The 20-pin SSOP footprint breaks out cleanly to 0.1" headers on a development board, exposing 16 I/O plus ADC and PWM for student projects. With 4 KB flash and 256 B RAM students can run real C programs including interrupts and timers in a single semester. The PIC18's 75+ instructions and Harvard architecture provide a deeper teaching moment than an Arduino's stripped-down loop. Components under USD 3 encourage stocking for lab kits.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F1220T-I/SS — 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 | PIC18F1220-I/SS | PIC18F1320T-I/SS | PIC18F1220-E/SS | PIC18LF1220T-I/SS | PIC18F1220-H/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-20 | SSOP-20 | SSOP-20 | SSOP-20 | SSOP-20 | SSOP-20 |
| Program Memory (Flash) | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| RAM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C + derating |
| Max CPU Speed | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 32 MHz typical (LF variant) | 40 MHz / 10 MIPS |
| VDD 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 | 1.8 V to 3.6 V (LF variant) | 2.0 V to 5.5 V |
| Packaging Format | Tape & Reel | Tube | Tape & Reel | Tube or T&R | Tape & Reel | Tube or T&R |
| Standby Current (nanoWatt Sleep) | 0.1 uA typical | 0.1 uA typical | 0.1 uA typical | 0.1 uA typical | 0.1 uA typical (lower VDD further reduces it) | 0.1 uA typical |
Bảo phân biệt quan trọng
- Industrial temperature grade in tape-and-reel pack-out (vsPIC18F1220-I/SS)
- Modern PIC18 architecture with Enhanced Flash and nanoWatt modes (vsPIC16F877A-I/PT)
- Wide supply voltage flexibility (vsPIC18F1220T-I/SS (vs PIC18LF1220T-I/SS))
Ghi chú thiết kế
The SSOP-20 footprint has a 0.65 mm lead pitch that demands careful PCB layout. Use JEDEC J-STD-020 compliant reflow profiles (peak 260 C, 60-90 s above 220 C). Place a 100 nF decoupling capacitor within 3 mm of VDD (pin 17) and a 10 uF bulk cap on the same rail to handle PIC wake-up surges. Avoid routing RF or motor-drive traces parallel to the SSOP pin escape; the narrow 0.65 mm leads limit clearances and risk solder bridging if flux residue accumulates between adjacent pads.
PIC18F1220T-I/SS supports VDD from 2.0 V to 5.5 V, but the brown-out reset (BOR) default threshold is 4.2 V minimum - enable BOR in configuration bits for robust 5 V rail operation. Estimate: at 40 MHz and 5 V, ICC is approximately 16 mA during Active mode (per datasheet DS39605 DC characteristics), dropping to 0.1 uA in Sleep. Use nanoWatt Idle modes for RAM-retentive standby, and reserve Sleep only when full CPU context restore is acceptable on wake.
A frequent design mistake is forgetting to disable the analog peripheral on digital I/O pins: RA0, RA1, and RA2 default to ADC channels, so reading PORTA without clearing ANCON bits turns an unused ADC pin into a floating input. Always configure ANCON, CMCON, and CVRCON at firmware start to free up the 16 I/O you expect. Also ensure ICSPDAT/ICSPCLK pins (typically RB6/RB7 - here mapped to RA6/RA7) are not used as outputs during programming since PICKit 4 forces the order at reset.
Thông tin tuân thủ
RoHS compliant per Microchip product page. AEC-Q100 not qualified - choose AEC-Q100-grade parts (e.g., PIC18F1220-E/SS or Q-suffixed variants) for automotive. Lead-free and halogen-free per Microchip 2026 product statements.
