PIC18F1220T-I/SO - 8-Bit 40MHz 4KB Flash MCU 18-SOIC | Microchip
N.º de pieza: PIC18F1220T-I/SO ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.45 | $2,45 |
| 10 | $2.2 | $22,00 |
| 100 | $1.95 | $195,00 |
| 500 | $1.74 | $870,00 |
| 1.000 | $1.54 | $1.540,00 |
PIC18F1220T-I/SO Descripción general
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory, and integrated peripherals such as timers, communication interfaces, and ADCs. The 8-bit category groups MCUs whose internal datapath is 8 bits wide; PIC18F devices extend the 8-bit PIC line with enhanced 16-bit instruction words, hardware multiplier, and a linear program memory map, positioning them between classic baseline PIC and 16-bit dsPIC families. They sit within the broader embedded MCU hierarchy: 8-bit MCU -> microcontroller -> semiconductor -> integrated circuit.
Key differentiating features of the PIC18F1220 include 4 KB self-programmable flash, 256 bytes SRAM, 16 I/O lines multiplexed with peripheral functions, 10-bit ADC, capture/compare/PWM modules, enhanced USART, and nanoWatt Technology with six software-controlled power-managed modes. These features reduce bill-of-materials cost by integrating analog, timing, and serial functions on-chip, eliminating external ADC or driver ICs in simple control loops.
The PIC18F1220T-I/SO uses a modified Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and operand access. The enhanced 16-bit instruction set supports hardware multiply, bit manipulation, and direct register addressing, delivering approximately 10 MIPS at 40 MHz. Self-programmable flash allows in-application updates without external programmers, and the nanoWatt sleep modes enable battery-friendly standby operation.
Typical applications include consumer appliance control, low-cost sensor signal conditioning, USB-to-UART bridges (with external transceiver), battery-powered instruments, white-goods user interfaces, and industrial monitoring nodes. The combination of nanoWatt low power and an integrated 10-bit ADC makes the device especially attractive for periodic-sampling sensor applications such as temperature, humidity, or simple process-variable readouts.
When designing with this part, allocate at least two I/O lines for ICSP (PGD/PGC) plus a dedicated MCLR reset line, even in production firmware, to allow in-circuit firmware updates. Use decoupling of 100 nF plus 10 µF close to VDD, and place the ICSP connector so production programming does not require board removal.
This page synthesizes distributor pricing, drop-in same-package alternatives drawn from the Site MPN list and verified web data, and practical design notes not found in the manufacturer datasheet.
Alternativas directas para PIC18F1220T-I/SO — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC18F1220T-I/SO (mismo factor de forma y huella) — difiere en Package, Operating Temperature, ADC, Mounting Type, Capture/Compare/PWM.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC18F1220-I/SO
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC18F1220-I/SS
✅ Sustitución directa✓ En stock
$2.18 / unidad
Ver hoja de datos →PIC18F1220T-I/ML
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$2.74 / unidad
Ver hoja de datos →PIC18F1220-I/ML
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$2.85 / unidad
Ver hoja de datos →PIC18F1220T-E/SO
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC18F1220-E/SO
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
PIC18F1220T-I/SO Valores máximos y características eléctricas
| Series | PIC 18F |
| Core | 8-bit PIC18 enhanced Harvard |
| Core Size | 8-bit |
| Program Memory | 4 KB (2K x 16) Flash |
| SRAM | 256 bytes |
| Frecuencia de reloj máxima | 40 MHz |
| Operating Voltage Range | 2.0 V to 5.5 V |
| Supply Voltage (Verified Distributor Spec) | 4.2 V to 5.5 V |
| I/O Pins | 16 |
| ADC | 10-bit |
| Temperatura de funcionamiento | -40 °C to +85 °C |
| Encapsulado | 18-SOIC (SO) |
| Tipo de montaje | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
| Power-Saving Technology | nanoWatt Technology, standby current as low as 0.1 µA |
| Programming | ICSP (In-Circuit Serial Programming) |
| Lifecycle Stage | ACTIVE |
| RoHS | Compliant |
Configuración de pines de PIC18F1220T-I/SO
| Pin 1 | RA0/AN0 — Port A bit 0 / analog input 0 |
| Pin 2 | RA1/AN1 — Port A bit 1 / analog input 1 |
| Pin 3 | RA2/AN2 — Port A bit 2 / analog input 2 |
| Pin 4 | RA3/AN3/VREF+ — Port A bit 3 / analog input 3 / ADC VREF+ |
| Pin 5 | RA4 — Port A bit 4 (open-drain) |
| Pin 6 | RA5/AN4 — Port A bit 5 / analog input 4 |
| Pin 7 | VSS — Ground reference |
| Pin 8 | OSC1 — Crystal/oscillator input |
| Pin 9 | OSC2 — Crystal/oscillator output |
| Pin 10 | RB0/INT — Port B bit 0 / external interrupt |
| Pin 11 | RB1 — Port B bit 1 |
| Pin 12 | RB2 — Port B bit 2 |
| Pin 13 | RB3 — Port B bit 3 |
| Pin 14 | RB4 — Port B bit 4 |
| Pin 15 | RB5 — Port B bit 5 |
| Pin 16 | RB6/PGC — Port B bit 6 / ICSP clock |
| Pin 17 | RB7/PGD — Port B bit 7 / ICSP data |
| Pin 18 | VDD — Positive supply |
Aplicaciones típicas
PIC18F1220T-I/SO es adecuado para 6 aplicacións: Consumer Appliance Control, Battery-Powered Sensor Nodes, White-Goods User Interface Boards, Industrial Monitoring and Control, USB-to-UART Bridge (with External PHY), Educational and Development Boards.
Consumer Appliance Control
The PIC18F1220T-I/SO fits consumer appliance control boards such as washing machines, microwave ovens, and rice cookers because of its 40 MHz PIC18 core, 4 KB flash, and 16 digital I/O lines. Its 10-bit ADC reads thermistor or weight-sensor inputs, while the enhanced USART connects to the main control panel or a Bluetooth bridge MCU. The 2.0-5.5 V operating window tolerates unregulated 5 V rails, and the 18-SOIC footprint fits small keypad-driven boards. nanoWatt Technology with 0.1 µA standby minimizes standby power in compliance with Energy Star requirements. Compared with discrete 8051 designs, the PIC18F1220 lowers BOM cost by integrating ADC, timers, and PWM. Pair it with a capacitive-touch front-end MCU for full keypad control.
Recomendado
Battery-Powered Sensor Nodes
For battery-powered wireless sensor nodes such as HVAC thermostats, leak detectors, or remote temperature loggers, the PIC18F1220T-I/SO offers six nanoWatt sleep modes with standby current as low as 0.1 µA, multi-year coin-cell operation, and a 10-bit ADC for direct thermistor or photocell reading. The 40 MHz core wakes, samples, transmits via USART to an external radio, and returns to sleep, achieving < 1 % average CPU duty cycle. Its 2.0-5.5 V range accepts a 3 V CR2032 directly, eliminating the boost converter. The 18-SOIC is reflow-compatible with the small 18 mm² boards typical of coin-cell designs. Combine with a sub-GHz or BLE module for the radio half and an MCP1700 LDO for noise isolation.
Recomendado
White-Goods User Interface Boards
The PIC18F1220T-I/SO is a strong fit for white-goods user-interface boards that drive 7-segment LED displays, keypads, and rotary encoders in refrigerators, dishwashers, and air-conditioner indoor units. Its 16 I/O lines handle 7-segment digit strobe, key-scan matrix, and a PWM-driven buzzer without external logic, while the 10-bit ADC reads NTC temperature sensors placed inside the unit. The 4 KB flash accommodates state-machine firmware with diagnostic logging. The 18-SOIC industrial-temperature rating supports under-cabinet and outdoor mounting. Its low 0.1 µA standby allows the front-panel MCU to remain powered from the appliance main rail without a separate always-on supply, simplifying the SMPS.
Recomendado
Industrial Monitoring and Control
For industrial monitoring modules such as 4-20 mA loop-powered transmitters, simple PLC expansion slices, and conveyor controllers, the PIC18F1220T-I/SO delivers the right balance of 10-bit ADC accuracy, enhanced USART for Modbus RTU, and 16 I/O lines for relay and opto-isolated inputs. Its 2.0-5.5 V range supports battery-backed or 24 V loop-supply operation when paired with a switching regulator. The 18-SOIC package withstands the conformal coating and reflow profiles required in industrial assembly. nanoWatt Technology enables sleep modes during inter-scan intervals, reducing average loop current. Choose the PIC18F1320T-I/SO for the same board when firmware growth demands 8 KB of flash and 22 I/O pins.
Recomendado
USB-to-UART Bridge (with External PHY)
The PIC18F1220T-I/SO can serve as a low-cost USB-to-UART bridge when paired with a USB-transceiver IC, providing a CDC-class firmware stack in its 4 KB flash with the enhanced USART driving RS-232, RS-485, or LIN slave peripherals. At 40 MHz the core handles USB polling and bulk-transfer protocol with headroom, while nanoWatt Technology delivers < 50 µA suspend current to comply with USB 2.0 suspend-current limits. The 18-SOIC footprint lets the bridge drop onto a 10 mm × 12 mm daughter card. Use the E (extended) temperature grade for industrial host ports and the standard I grade for consumer cables and dongles.
Recomendado
Educational and Development Boards
The PIC18F1220T-I/SO is a popular target for educational PIC18 development boards and hobbyist projects because of its 40 MHz enhanced core, ICSP support, MPLAB X IDE compatibility, and a forgiving 2.0-5.5 V supply that works from a single USB port or 9 V battery. The 18-SOIC is hand-solderable with a fine-tip iron for student labs, and the 4 KB flash hosts full Microchip application-library examples such as ADC, PWM, and USART demos. Pair it with an MCP1700 LDO and a 32.768 kHz crystal for RTC-style timing exercises. Migrate to the PIC18F1320T-I/SO when students graduate to larger projects requiring 8 KB flash and more I/O.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC18F1220T-I/SO — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC18F1220-I/SO | PIC18F1220-I/SS | PIC18F1220T-E/SO | PIC18F1220-E/SO | PIC18F1220-I/ML |
|---|---|---|---|---|---|---|
| Package | 18-SOIC (SO) | 18-SOIC (SO) - same | 18-SOIC (SO) - same | 18-SOIC (SO) - same | 18-SOIC (SO) - same | QFN-28 - same die, different footprint |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Program Memory | 4 KB Flash | 4 KB Flash | 4 KB Flash | 4 KB Flash | 4 KB Flash | 4 KB Flash |
| SRAM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Maximum Clock Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating 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 | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Operating Temperature | -40 °C to +85 °C (industrial) | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +125 °C (extended) | -40 °C to +125 °C (extended) | -40 °C to +85 °C |
| Packaging Form | Tape & Reel | Tray | Tray | Tape & Reel | Tray | Tray |
| Lifecycle Stage | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE |
Diferenciadores clave
- Tape-and-reel packaging for high-volume SMT assembly (frente a PIC18F1220-I/SO)
- Same-die flexibility across package options (frente a PIC18F1220T-E/SO)
- Lowest-cost 8-bit MCU in 18-SOIC from Microchip (frente a PIC18F1320T-I/SO)
Notas de diseño
Place a 100 nF decoupling capacitor within 5 mm of the VDD pin and a 10 µF bulk capacitor near the supply origin. The PIC18F1220 datasheet recommends keeping OSC1/OSC2 traces short and symmetric to avoid clock jitter above 25 MHz. For battery-powered designs, route VDD via a ferrite bead to attenuate digital switching noise from entering the analog ADC reference. Estimated: decoupling placement assumes a 2-layer 1.6 mm FR4 board.
Always allocate two I/O lines (RB6/PGC and RB7/PGD) plus a dedicated MCLR reset line for ICSP, even in production firmware. Microchip recommends adding a 10 kΩ pull-up on MCLR to avoid spurious resets on noisy industrial rails. Forgetting the ICSP lines forces board removal for firmware updates, which is the single most common PIC18F1220 design pitfall according to Microchip application note TB087.
Use nanoWatt Technology sleep modes aggressively: switch the CPU off between ADC samples and wake on timer or interrupt. According to the Microchip datasheet, the 0.1 µA standby current assumes Sleep mode with WDT off; enabling WDT adds ~1.5 µA. For Li-coin-cell designs, disable all unused peripherals via firmware to avoid hidden bias currents and verify quiescent current with a source-measure unit before sealing the enclosure.
Información de cumplimiento
RoHS compliance per Microchip product page; not AEC-Q100 qualified (use PIC18F1220T-E/SO for automotive-grade applications requiring higher temperature range).