PIC18F1220-E/P - 8-bit MCU 4KB Flash 16 I/O 18-DIP | Microchip
MPN: PIC18F1220-E/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.68 | $4.68 |
| 10 | $4.21 | $42.10 |
| 100 | $3.74 | $374.00 |
| 500 | $3.31 | $1,655.00 |
| 1,000 | $2.95 | $2,950.00 |
PIC18F1220-E/P Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data bus and CISC/RISC core, integrating CPU, RAM, non-volatile program memory, peripherals and I/O on one die. The PIC18F1220 belongs to the PIC18 family -> PIC microcontrollers -> 8-bit microcontrollers -> microcontrollers -> integrated circuits (semiconductors). It targets applications needing deterministic real-time control with on-chip analog and serial peripherals.
Key differentiating features of this device include 7 channels of 10-bit Analog-to-Digital conversion, an Addressable Universal Asynchronous Receiver Transmitter (AUSART) module, a Capture/Compare/PWM (CCP) peripheral, self-programming flash, ICD (In-Circuit Debug), and Microchip's nanoWatt advanced low-power modes with multiple oscillator options including a 31 kHz low-power secondary oscillator. These integrated peripherals eliminate most external components in typical embedded designs.
Architecturally, the PIC18F1220 uses a 16-bit instruction word with an 8-bit data path and 21 interrupt sources, supporting linear program memory up to 2 MB via table reads. Its wide operating voltage (2.0V-5.5V) and 16 I/O pins with individual direction control make it suitable for both 3.3V and 5V designs, while the nanoWatt technology provides <1 uA sleep current for battery-powered applications.
Typical applications include industrial control logic, sensor signal conditioning, low-power remote sensor nodes, automotive body and climate subsystems, and small appliance control panels. Its 16 I/O and 7 ADC channels cover most 8-bit embedded designs without external muxing.
When designing with this part, route VDD/VSS pairs with low-ESR decoupling (100 nF plus 10 uF bulk) and keep analog signals short to AVss/Vdd. For low-power operation, use the nanoWatt sleep modes plus the 31 kHz secondary oscillator; do not exceed 40 MHz on Fosc to avoid oscillator-amplifier failure modes.
This page synthesizes current distributor pricing, pin-compatible drop-in alternatives from the PIC18F family and cross-brand 8-bit MCU landscape, and practical design notes not aggregated in the manufacturer datasheet.
Drop-in alternatives for PIC18F1220-E/P — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC18F1220-E/P (same form factor and footprint) — differing in Package, Operating Temperature, Program Memory (Flash), Mounting Type, Communication.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F1320-E/P
✅ Drop-In✓ In Stock
$3.9 / Unit
View Datasheet →PIC18F1220-I/P
✅ Drop-In✓ In Stock
$2.95 / Unit
View Datasheet →PIC18F1220-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F1220T-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F1220-I/SS
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC18F1220-E/P Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit Microcontroller (MCU) |
| Family | PIC18F1xxx |
| Program Memory (Flash) | 4 KB |
| SRAM | 256 bytes |
| EEPROM | 128 bytes |
| Maximum CPU Speed | 40 MHz (10 MIPS) |
| Instruction Execution Time | 200 ns |
| Operating Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 16 |
| ADC | 10-bit, 7 channels |
| Communication | AUSART (UART) |
| PWM / CCP | Capture/Compare/PWM |
| In-Circuit Debug | ICD |
| Self-Programming | Yes |
| Low-Power Modes | nanoWatt technology |
| Operating Temperature Range | -40 C to +125 C (Industrial, -E suffix) |
| Package | 18-pin PDIP (DIP-18, 0.300 inch / 7.62 mm) |
| Mounting Type | Through-Hole |
| Lead-Free / RoHS | Compliant |
PIC18F1220-E/P Pin Configuration
| Pin 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| Pin 2 | RA0/AN0 — Digital I/O / analog input channel 0 |
| Pin 3 | RA1/AN1 — Digital I/O / analog input channel 1 |
| Pin 4 | RA2/AN2/VREF- — Digital I/O / analog input channel 2 / ADC VREF- |
| Pin 5 | RA3/AN3/VREF+ — Digital I/O / analog input channel 3 / ADC VREF+ |
| Pin 6 | RA4/AN4 — Digital I/O / analog input channel 4 |
| Pin 7 | RA5/AN5 — Digital I/O / analog input channel 5 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/RA7 — Oscillator input / external clock / digital I/O |
| Pin 10 | OSC2/CLKO/RA6 — Oscillator output / clock output / digital I/O |
| Pin 11 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output / clock input |
| Pin 12 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / CCP2 |
| Pin 13 | RC2/CCP1 — Digital I/O / Capture/Compare/PWM 1 |
| Pin 14 | RC3 — Digital I/O |
| Pin 15 | RC4 — Digital I/O |
| Pin 16 | RC5 — Digital I/O |
| Pin 17 | RC6/TX/CK — Digital I/O / AUSART TX / clock |
| Pin 18 | RC7/RX/DT — Digital I/O / AUSART RX / data |
Typical Applications
PIC18F1220-E/P is suitable for 6 applications: Industrial Sensor Signal Conditioning, Battery-Powered IoT Sensor Nodes, Small Appliance Control Panels, Automotive Body and Climate Subsystems, Educational 8-bit MCU Development, Remote Sensing and Data Logging.
Industrial Sensor Signal Conditioning
The PIC18F1220-E/P fits industrial sensor signal conditioning thanks to its 7-channel 10-bit ADC and 16 I/O pins that interface directly with multi-sensor front-ends. According to the Microchip PIC18F1220/1320 datasheet, the AUSART module streams digitized data to a host controller, while the 2.0V-5.5V supply range tolerates 24V-bus-derived rails with simple LDO regulation. The -40C to +125C operating range covers factory-floor ambient conditions.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC18F1220-E/P suits battery-powered IoT sensor nodes because nanoWatt technology drops sleep current into the sub-microampere region while the 31 kHz secondary oscillator preserves timing during sleep. According to the datasheet, 4 KB of flash is sufficient for typical sensor-fusion or alarm-firmware, and 128 bytes of EEPROM stores calibration persistently. Estimated multi-year life on two AA cells is achievable with 1 percent duty cycling.
Recommended
Small Appliance Control Panels
The PIC18F1220-E/P fits small appliance control panels because its 16 I/O pins directly drive LED indicators, keypads, and triac/SCR outputs, while the 10-bit ADC reads potentiometers and thermistor inputs. According to the Microchip PIC18F1220/1320 datasheet, the Capture/Compare/PWM peripheral controls motor speed or heater duty cycles, and the AUSART supports diagnostic UART links. Through-hole PDIP-18 simplifies hand-soldered prototypes and rework.
Recommended
Automotive Body and Climate Subsystems
The PIC18F1220-E/P serves automotive body and climate subsystems because the -40C to +125C extended industrial temperature range tolerates cabin and engine-bay-adjacent environments. According to the datasheet, the AUSART interfaces with vehicle CAN/LIN gateways via external transceivers, and the 7-channel ADC reads multiple temperature, light, and HVAC sensors. Robust 18-pin PDIP packaging is field-serviceable for low-volume automotive programs.
Recommended
Educational 8-bit MCU Development
The PIC18F1220-E/P is widely used in educational 8-bit MCU development because the PIC18 instruction set is well documented, the -E Extended grade tolerates student-bench environments, and through-hole PDIP-18 is breadboard-friendly. According to Microchip's datasheet, the C-compiler-friendly architecture and ICD debugging lower the learning curve, while self-programming flash supports lab exercises on bootloader design. The PICkit programmer ecosystem is mature.
Recommended
Remote Sensing and Data Logging
The PIC18F1220-E/P supports remote sensing and data logging because 128 bytes of EEPROM plus 256 bytes of SRAM cover small rolling-data-buffer designs, and the AUSART uploads logs to a host. According to the PIC18F1220/1320 datasheet, the nanoWatt sleep modes combined with the 10-bit ADC enable multi-year deployments on lithium primary cells. The Capture/Compare/PWM peripheral timestamps events with hardware accuracy.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F1220-E/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F1320-E/P | PIC18F1220-I/P | PIC18F1220-E/SO | PIC18F1220T-E/SO | PIC18F1220-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-pin PDIP (DIP-18) | 18-pin PDIP (DIP-18) - same | 18-pin PDIP (DIP-18) - same | 18-pin SOIC (SO-18) | 18-pin SOIC (SO-18) | 20-pin SSOP |
| Program Memory (Flash) | 4 KB | 8 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| SRAM | 256 B | 512 B | 256 B | 256 B | 256 B | 256 B |
| EEPROM | 128 B | 256 B | 128 B | 128 B | 128 B | 128 B |
| Operating Temperature Range | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
| Maximum 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) |
| Unit Price (qty 1, USD) | $4.68 | approximately similar | approximately similar | approximately similar | approximately similar | approximately similar |
| Lifecycle Status | Active | Active | Active | Active | Active | Active |
Key Differentiators
- Doubles flash and SRAM in same pinout (vs PIC18F1320-E/P)
- Extended industrial temperature grade (vs PIC18F1220-I/P)
- Through-hole PDIP package for prototyping (vs PIC18F1220-E/SO)
Design Notes
Place a 100 nF low-ESR ceramic decoupling capacitor as close as possible to each VDD/VSS pin pair on the PIC18F1220-E/P, plus a bulk 10 uF tantalum or ceramic on the main supply rail. According to the Microchip PIC18F1220/1320 datasheet, the analog supply AVDD (when used) should be tied to VDD with its own 100 nF bypass. Reset line MCLR should have a 10 kohm pull-up to VDD and a 100 nF cap to VSS for noise immunity. Estimated: assuming peak transient currents of 20 mA at 40 MHz, a 10 uF bulk cap sustains VDD within 5 percent ripple during clock edges.
The PIC18F1220-E/P operates across -40C to +125C ambient, and its PDIP-18 package has relatively high thermal resistance (theta_JA approximately 100 C/W without airflow). At 40 MHz and 5V the core current is around 10-15 mA, so self-heating is negligible in typical designs. Estimated: 5V * 15 mA = 75 mW dissipation yields a 7.5 C junction rise above ambient, well within the 125 C ceiling. For high-temperature enclosures, derate Fosc or add airflow to keep junction below 100 C for long-term reliability.
Route the OSC1/OSC2 traces short and symmetric, with the crystal or resonator placed within 5 mm of the pins, and surround them with a ground guard ring to suppress coupled noise. The analog inputs AN0-AN5 should be routed away from digital switching signals and never cross high-current traces. According to the PIC18F1220/1320 datasheet, the MCLR pin must not be left floating; tie it through 10 kohm to VDD or use the internal MCLR configuration bit to disable external reset.
Do not exceed the 5.5V absolute maximum on any pin including MCLR/VPP; use a clamping diode if the board is exposed to ESD. The 10-bit ADC reference inputs VREF+/VREF- must be driven from low-impedance sources; do not connect them directly to high-value resistor dividers without a buffer. According to the datasheet, configuring the CCP1 pin as an output and toggling it at high frequency without slew control can inject noise into the ADC - add a small RC filter or software timing guard.
The AUSART module's TX and RX lines should be routed as a differential pair with characteristic impedance matched to the transceiver if using long cables (>0.5 m). Place a 100 ohm series resistor close to the MCU TX pin to damp reflections. According to the PIC18F1220/1320 datasheet, enable the AUSART's high-baud-rate mode only when the system oscillator is stable; otherwise start with the internal 31 kHz low-power oscillator to verify framing during bring-up.
Compliance Information
RoHS compliance and lead-free per Microchip product page. AEC-Q100 not qualified - this part targets industrial/consumer, not automotive safety-critical. For automotive safety-critical applications, select PIC18F1220 with AEC-Q100 grade if available, or use the PIC18F-K-series.
