PIC18F6622-E/PT - 8-bit MCU 64KB Flash 64-TQFP | Microchip
MPN: PIC18F6622-E/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $10.94 | $10.94 |
| 10 | $9.79 | $97.90 |
| 100 | $8.42 | $842.00 |
| 500 | $7.36 | $3,680.00 |
| 1,000 | $6.71 | $6,710.00 |
PIC18F6622-E/PT Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and a configurable set of peripherals (ADC, timers, communication ports, I/O). The PIC18F family sits in Microchip's 8-bit nanoWatt XLP portfolio and is intended for embedded applications requiring moderate code density, deterministic real-time response, and rich connectivity. Within Microchip's taxonomy, PIC18F6622 belongs to the PIC18F8722 device family: 8-bit MCU > microcontroller > embedded IC > semiconductor.
Key features include four serial ports: two synchronous (I2C and SPI) and two asynchronous (USART with LIN hardware support), making the part well suited to multi-bus gateways. The nanoWatt XLP power-management architecture provides multiple low-power sleep modes and peripheral clock gating, and the device also integrates 4 hardware capture/compare/PWM modules for motor and lighting control. The 54 I/O pins are 5 V tolerant and software-configurable as digital or analog.
Typical applications include industrial control panels, large low-power sensor nodes, automotive body and LIN-cluster nodes, USB/serial bridges, and any embedded design that needs more code space and peripherals than smaller PIC18F parts can provide. The 64 KB flash / 4 KB RAM envelope fits embedded TCP/IP stacks, USB CDC/HID class firmware, and graphical menu systems.
When designing with this part, budget an external 10 MHz crystal or use the internal oscillator block; ensure the AVDD/AVSS pins are filtered separately from the digital supply if ADC accuracy matters, and reserve one I/O pin for In-Circuit Serial Programming (ICSP). Note the -E suffix denotes the -40C to +125C extended industrial temperature grade.
This page synthesizes distributor pricing, drop-in same-brand and cross-brand alternatives in the 64-TQFP footprint, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC18F6622-E/PT — 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 PIC18F6622-E/PT (same form factor and footprint) — differing in Core Architecture, Package, Timers, ADC, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F6622-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F6722-E/PT
✅ Drop-In✓ In Stock
$10.1 / Unit
View Datasheet →PIC18F6621-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F6527-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F6627-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F6585-E/PT
✅ Drop-In✓ In Stock
$9.2 / Unit
View Datasheet →PIC18F6622-E/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 (8-bit) |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 4 KB |
| Data EEPROM | 1 KB |
| Maximum CPU Clock | 40 MHz (FOSC); 25 MHz datasheet spec; 10 MIPS |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 54 |
| ADC | 10-bit, up to 12 channels |
| Timers | 4 x 8/16-bit Timer/counter modules |
| CCP Modules | 4 x Capture/Compare/PWM |
| EUSART | 2 (LIN-capable) |
| MSSP | 2 (I2C + SPI) |
| Operating Temperature | -40C to +125C (E = extended industrial) |
| Package | 64-pin TQFP, 10x10 mm, 1 mm height, MS-026 |
| Mounting Type | Surface Mount |
| MSL Level | 3 |
| RoHS Status | Compliant (Pb-free) |
| Power-Saving Modes | nanoWatt XLP (multiple sleep modes) |
PIC18F6622-E/PT Pin Configuration
| Pin 1 | MCLR/RE3 — Master Clear (Reset) input or digital input RE3 |
| Pin 2 | RA0/AN0 — PORTA bit 0 / analog input AN0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / analog input AN1 |
| Pin 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input AN2 / ADC VREF- |
| Pin 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input AN3 / ADC VREF+ |
| Pin 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 7 | RA5/AN4/SS1 — PORTA bit 5 / analog input AN4 / SPI1 slave select |
| Pin 8 | RA6 — PORTA bit 6 |
| Pin 9 | RA7 — PORTA bit 7 |
| Pin 10 | RE0/RD — PORTE bit 0 / parallel-port read control |
| Pin 11 | RE1/WR — PORTE bit 1 / parallel-port write control |
| Pin 12 | RE2/CS — PORTE bit 2 / parallel-port chip select |
| Pin 13 | VDD — Positive supply (4.2-5.5 V) |
| Pin 14 | VSS — Ground |
| Pin 15 | OSC1/CLKI/RA7 — Oscillator crystal input or external clock input |
| Pin 16 | OSC2/CLKO/RA6 — Oscillator crystal output or clock output |
| Pin 17 | RC0/T1OSO/T13CKI — PORTC bit 0 / Timer1 oscillator output / clock input |
| Pin 18 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Pin 19 | RC2/CCP1 — PORTC bit 2 / CCP1 |
| Pin 20 | RC3/SCK1/SCL1 — PORTC bit 3 / SPI1 clock / I2C1 clock |
| Pin 21 | RC4/SDI1/SDA1 — PORTC bit 4 / SPI1 data in / I2C1 data |
| Pin 22 | RC5/SDO1 — PORTC bit 5 / SPI1 data out |
| Pin 23 | RC6/TX1/CK1 — PORTC bit 6 / EUSART1 transmit / clock |
| Pin 24 | RC7/RX1/DT1 — PORTC bit 7 / EUSART1 receive / data |
| Pin 25 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| Pin 26 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| Pin 27 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| Pin 28 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| Pin 29 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| Pin 30 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| Pin 31 | RD6/PSP6/TX2/CK2 — PORTD bit 6 / parallel slave port bit 6 / EUSART2 transmit |
| Pin 32 | RD7/PSP7/RX2/DT2 — PORTD bit 7 / parallel slave port bit 7 / EUSART2 receive |
| Pin 33 | VSS — Ground |
| Pin 34 | VDD — Positive supply (4.2-5.5 V) |
| Pin 35 | RB0/INT0/FLT0 — PORTB bit 0 / external interrupt 0 / PWM fault input |
| Pin 36 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Pin 37 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Pin 38 | RB3/INT3/CCP2 — PORTB bit 3 / external interrupt 3 / CCP2 |
| Pin 39 | RB4/KBI0 — PORTB bit 4 / interrupt-on-change bit 0 |
| Pin 40 | RB5/KBI1 — PORTB bit 5 / interrupt-on-change bit 1 |
| Pin 41 | RB6/KBI2/PGC — PORTB bit 6 / interrupt-on-change bit 2 / ICSP clock |
| Pin 42 | RB7/KBI3/PGD — PORTB bit 7 / interrupt-on-change bit 3 / ICSP data |
| Pin 43 | RF0 — PORTF bit 0 |
| Pin 44 | RF1 — PORTF bit 1 |
| Pin 45 | RF2 — PORTF bit 2 |
| Pin 46 | RF3 — PORTF bit 3 |
| Pin 47 | RF4 — PORTF bit 4 |
| Pin 48 | RF5 — PORTF bit 5 |
| Pin 49 | RF6 — PORTF bit 6 |
| Pin 50 | RF7 — PORTF bit 7 |
| Pin 51 | RG0 — PORTG bit 0 |
| Pin 52 | RG1 — PORTG bit 1 |
| Pin 53 | RG2 — PORTG bit 2 |
| Pin 54 | RG3 — PORTG bit 3 |
| Pin 55 | RG4 — PORTG bit 4 |
| Pin 56 | RG5 — PORTG bit 5 |
| Pin 57 | AVDD — Analog positive supply |
| Pin 58 | AVSS — Analog ground |
| Pin 59 | RH0 — PORTH bit 0 |
| Pin 60 | RH1 — PORTH bit 1 |
| Pin 61 | RH2 — PORTH bit 2 |
| Pin 62 | RH3 — PORTH bit 3 |
| Pin 63 | RH4 — PORTH bit 4 |
| Pin 64 | RH5 — PORTH bit 5 |
Typical Applications
PIC18F6622-E/PT is suitable for 6 applications: Industrial Control Panel HMI, LIN Automotive Body Controller, Multi-Serial Port Sensor Gateway, Low-Power Wireless Sensor Node, Motor and Lighting PWM Controller, Large-Pin-Count Embedded Data Logger.
Industrial Control Panel HMI
The PIC18F6622-E/PT fits industrial HMI panels because its 64 KB flash and 4 KB RAM accommodate graphical menu state machines, while the 12-channel 10-bit ADC at 100 ksps handles backlight, key-matrix, and analog sensor reads without an external MUX. Its 54 GPIO directly drive 4x4 key matrices, character LCDs, and status LEDs without glue logic, and the nanoWatt XLP sleep modes drop panel standby current to microamps for mains-powered 24/7 operation. Two MSSP channels drive I2C-based temperature sensors and SPI flash memory for logging. Engineers choose this part over smaller PIC18F variants when their menu tree or MODBUS RTU command set exceeds 32 KB of code.
Recommended
LIN Automotive Body Controller
The PIC18F6622-E/PT's two EUSART modules with LIN 1.3 hardware support and 54 GPIO pins map cleanly to body-control modules driving mirrors, locks, and lighting clusters. The -40C to +125C extended industrial temperature range handles under-dash thermal stress, while the 4.2-5.5 V supply accepts a 12 V battery rail post-regulation. The 4 KB RAM buffers LIN scheduling tables without real-time jitter, and the 4 CCP/PWM channels directly drive LED dimming and small motor control. For AEC-Q100 safety-critical roles, the automotive-grade PIC18F6622-I/PT variant in the same 64-TQFP is preferred.
Recommended
Multi-Serial Port Sensor Gateway
With two EUSART (LIN-capable), two MSSP (I2C + SPI), and 54 GPIO, the PIC18F6622-E/PT serves as a four-bus gateway bridging RS-485 sensors, SPI ADC front-ends, and I2C peripherals to a host controller. The 64 KB flash holds lightweight Modbus or MQTT-SN gateway firmware; the 4 KB RAM buffers incoming Modbus frames. The nanoWatt XLP architecture lets the gateway idle between sensor polls at sub-microamp currents, which is critical for solar-powered remote installations. Engineers prefer this part over 32 KB PIC18F variants when protocol translation tables push firmware above 32 KB.
Recommended
Low-Power Wireless Sensor Node
The PIC18F6622-E/PT's nanoWatt XLP technology provides multiple deep-sleep modes that drop current below 100 nA with RTC running, while the 12-channel 10-bit ADC reads battery voltage, temperature, and analog sensor outputs. The 64 KB flash stores wireless-protocol MAC/PHY glue for sub-GHz modules such as MRF89XA, and the 4 KB RAM buffers payload before burst transmit. The extended -40C to +125C range supports outdoor and industrial deployments. Compared with smaller PIC18F parts, the 6622 wins when the node firmware includes over-the-air update logic and local data logging.
Recommended
Motor and Lighting PWM Controller
The PIC18F6622-E/PT integrates 4 hardware CCP/PWM modules that generate up to 10-bit PWM at 40 MHz, sufficient to drive BLDC fans, LED dimmers, and small DC motor H-bridges without software bit-banging. The 54 GPIO handle direction and enable lines, while the 10-bit ADC samples shunt current for closed-loop control. The 64 KB flash fits sensorless BLDC startup algorithms, and the 4 KB RAM holds PID state. Engineers pair this part with gate drivers such as MCP8024 for three-phase BLDC; the -E temperature grade supports motor-mounted PCBs.
Recommended
Large-Pin-Count Embedded Data Logger
The PIC18F6622-E/PT's 64 KB flash, 1 KB EEPROM, 54 GPIO, and 12-channel 10-bit ADC combine into a single-chip data logger for industrial and instrumentation applications. The EEPROM provides non-volatile parameter storage for calibration constants, while the flash stores logger firmware and Modbus RTU stacks. The 4 KB RAM buffers sample blocks before SD-card writes via SPI, and the 5 V tolerance simplifies interfacing with legacy analog front-ends. Compared with smaller PIC18F variants, the 6622 wins when the logger must sample 8-12 analog channels simultaneously at 10 ksps aggregate.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F6622-E/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F6622-I/PT | PIC18F6722-E/PT | PIC18F6621-E/PT | PIC18F6527-E/PT | PIC18F6627-E/PT | PIC18F6585-E/PT |
|---|---|---|---|---|---|---|---|
| Package | 64-TQFP (10x10 mm) | 64-TQFP - same | 64-TQFP - same | 64-TQFP - same | 64-TQFP - same | 64-TQFP - same | 64-TQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 64 KB | 128 KB | 32 KB | 48 KB | 96 KB | 48 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 3.5 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Max CPU Clock | 40 MHz (10 MIPS) | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| I/O Pins | 54 | 54 | 54 | 54 | 54 | 54 | 53 |
| Temperature Grade | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) |
| Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
Key Differentiators
- More flash than PIC18F6621 sibling (vs PIC18F6621-E/PT)
- Extended industrial temperature vs industrial grade (vs PIC18F6622-I/PT)
- Less flash but pin-compatible with PIC18F6722 (vs PIC18F6722-E/PT)
Design Notes
Decouple AVDD/AVSS with a 100 nF ceramic plus 10 uF tantalum placed within 10 mm of the analog pins, and tie VDD/VSS pairs with separate 100 nF ceramics for each pair on the 64-TQFP. The PIC18F6622-E/PT draws approximately 16 mA at 40 MHz with all peripherals enabled; nanoWatt XLP sleep modes drop this below 100 nA with RTC running, so use Sleep + RTCC for battery-backed duty-cycled designs.
Route the 40 MHz oscillator traces short (< 5 mm) and shield them with a ground pour. The 64-TQFP-10x10 package has a center thermal pad on some variants; if present, stitch the center pad to ground with 4 thermal vias to a 2 oz copper inner layer. Place the ICSP PGC/PGD pair on dedicated test points so production programming does not conflict with user circuitry.
When driving long cables from the EUSART (RS-485 or LIN), use a slow slew-rate configuration to limit EMI, and add a 100 ohm termination at the bus end. The 12-channel 10-bit ADC requires that analog input traces do not cross digital clock lines; if they must, cross at 90 degrees. Apply a 100 nF bypass per analog pin if the source impedance exceeds 2.5 kohm, per the PIC18F8722 family datasheet acquisition-time specification.
Do not omit the MCLR pull-up resistor (10 kohm typical to VDD); the device will not start reliably otherwise. Do not exceed 5.5 V on any I/O pin even when the part is unpowered (clamping diodes can latch up). For ICSP programming, ensure PGC and PGD are not heavily loaded (< 50 pF total capacitance) or programming will fail intermittently.
Compliance Information
Pb-free per Microchip product page. -E suffix denotes extended industrial -40C to +125C grade, not AEC-Q100 automotive qualification. For AEC-Q100 safety-critical automotive roles, choose the automotive-grade PIC18F6622-I/PT equivalent.
