PIC18LF8622T-I/PT - 8-Bit MCU, 64KB Flash, 40MHz, 80-TQFP | Microchip
MPN: PIC18LF8622T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.5 | $9.50 |
| 10 | $8.78 | $87.80 |
| 100 | $7.45 | $745.00 |
| 500 | $6.62 | $3,310.00 |
| 1,000 | $6.05 | $6,050.00 |
PIC18LF8622T-I/PT Overview
A PIC18F microcontroller belongs to the 8-bit RISC microcontroller category, designed around Microchip's enhanced PIC18 architecture that delivers up to 10 MIPS at 40 MHz. The PIC18 family sits within the broader hierarchy of microcontroller -> embedded MCU -> semiconductor, and is widely deployed in industrial, automotive aftermarket, and consumer applications requiring deterministic real-time performance and rich peripheral integration.
Key features include 64 KB (32K x 16 words) of self-programmable Flash program memory, 4 KB of general-purpose SRAM, an integrated 10-bit ADC with up to 16 channels, multiple USART, SPI, and I2C peripherals, and a 16-bit timer/counter array. The 70 available I/O pins support a wide range of mixed-signal interfacing tasks, while on-chip EEPROM emulation through Flash self-write enables robust non-volatile data storage without external memory.
The 'LF' prefix in PIC18LF8622 denotes the low-voltage full-Vdd operating range variant that supports 2.0V-5.5V supplies, in contrast to the 'F' variant which requires 4.2V-5.5V. The PIC18LF8622T-I/PT specifically is the tape-and-reel (-T) industrial-grade (-I/PT) packaging, where /PT identifies the 80-pin TQFP package. The device integrates Microchip's nanoWatt Technology power management with multiple Idle and Sleep modes to extend battery life in energy-conscious designs.
Typical applications include industrial control panels, HVAC controllers, motor drive front-ends, instrumentation, and human-machine interface (HMI) terminals where the combination of 70 I/O pins, large Flash capacity, and CAN/USB/Ethernet-friendly peripheral set is advantageous. The wide operating voltage also makes it suitable for 5V industrial bus architectures.
When designing with this part, ensure the PCB layout provides adequate 0.1 uF decoupling on every Vdd/Vss pair and a low-impedance ground plane beneath the TQFP thermal pad. Programmer/debugger selection should target MPLAB ICD 3 or MPLAB PICkit 3/4 with the ICSP interface, and unused I/O pins must be configured as outputs low to minimize quiescent current.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found on the manufacturer datasheet cover page.
Drop-in alternatives for PIC18LF8622T-I/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 PIC18LF8622T-I/PT (same form factor and footprint) — differing in Package, RoHS Status, Maximum CPU Speed, Program Memory (Flash), Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18LF8622-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF8722T-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF8627T-I/PT
✅ Drop-In✓ In Stock
$7.1 / Unit
View Datasheet →PIC18F8622T-I/PT
✅ Drop-In✓ In Stock
$5.3 / Unit
View Datasheet →PIC18F8722T-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F8627T-I/PT
✅ Drop-In✓ In Stock
$7.32 / Unit
View Datasheet →PIC18LF8622T-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 (8-bit RISC, enhanced) |
| Program Memory (Flash) | 64 KB (32K x 16 words) |
| RAM | 4 KB |
| Maximum CPU Speed | 40 MHz (10 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 5.5 V (LF full Vdd range) |
| I/O Pins | 70 |
| Package | 80-pin TQFP (12 x 12 mm, 0.5 mm pitch) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant (Pb-Free) |
| Packaging Format | Tape & Reel (T suffix) |
PIC18LF8622T-I/PT Pin Configuration
| Pin 1 | RF2 — Port F bit 2 (digital I/O) |
| Pin 2 | RF3 — Port F bit 3 (digital I/O) |
| Pin 3 | RF4 — Port F bit 4 (digital I/O) |
| Pin 4 | RF5 — Port F bit 5 (digital I/O) |
| Pin 5 | RF6 — Port F bit 6 (digital I/O) |
| Pin 6 | RF7 — Port F bit 7 (digital I/O) |
| Pin 7 | AVDD — Analog supply voltage |
| Pin 8 | AVSS — Analog ground |
| Pin 9 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Pin 10 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Pin 11 | VDD — Digital supply voltage |
| Pin 12 | VSS — Digital ground |
| Pin 13 | RA2/AN2/VREF- — Port A bit 2 / Analog input 2 / VREF- |
| Pin 14 | RA3/AN3/VREF+ — Port A bit 3 / Analog input 3 / VREF+ |
| Pin 15 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Pin 16 | RA5/AN4/SS/HLVDIN — Port A bit 5 / Analog input 4 / SPI SS / HLVD input |
| Pin 17 | RA6 — Port A bit 6 (digital I/O) |
| Pin 18 | OSC1/CLKIN — Crystal oscillator input / external clock in |
| Pin 19 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| Pin 20 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock in |
| Pin 21 | RC1/T1OSI — Port C bit 1 / Timer1 oscillator input |
| Pin 22 | RC2/CCP1 — Port C bit 2 / CCP1 PWM output |
| Pin 23 | RC3/SCK/SCL — Port C bit 3 / SPI SCK / I2C SCL |
| Pin 24 | RC4/SDI/SDA — Port C bit 4 / SPI SDI / I2C SDA |
| Pin 25 | RC5/SDO — Port C bit 5 / SPI SDO |
| Pin 26 | RC6/TX/CK — Port C bit 6 / USART TX / USART clock |
| Pin 27 | RC7/RX/DT — Port C bit 7 / USART RX / USART data |
| Pin 28 | RD0/PSP0 — Port D bit 0 / Parallel Slave Port bit 0 |
| Pin 29 | RD1/PSP1 — Port D bit 1 / Parallel Slave Port bit 1 |
| Pin 30 | RD2/PSP2 — Port D bit 2 / Parallel Slave Port bit 2 |
| Pin 31 | VSS — Digital ground |
| Pin 32 | VDD — Digital supply voltage |
| Pin 33 | RD3/PSP3 — Port D bit 3 / Parallel Slave Port bit 3 |
| Pin 34 | RD4/PSP4 — Port D bit 4 / Parallel Slave Port bit 4 |
| Pin 35 | RD5/PSP5 — Port D bit 5 / Parallel Slave Port bit 5 |
| Pin 36 | RD6/PSP6 — Port D bit 6 / Parallel Slave Port bit 6 |
| Pin 37 | RD7/PSP7 — Port D bit 7 / Parallel Slave Port bit 7 |
| Pin 38 | VSS — Digital ground (PT package) |
| Pin 39 | RE0/RD/AN5 — Port E bit 0 / RD control / Analog input 5 |
| Pin 40 | RE1/WR/AN6 — Port E bit 1 / WR control / Analog input 6 |
| Pin 41 | RE2/CS/AN7 — Port E bit 2 / CS control / Analog input 7 |
| Pin 42 | RE3 — Port E bit 3 (digital I/O) |
| Pin 43 | MCLR — Master Clear (reset) input |
| Pin 44 | RG0 — Port G bit 0 (digital I/O) |
| Pin 45 | RG1 — Port G bit 1 (digital I/O) |
| Pin 46 | RG2 — Port G bit 2 (digital I/O) |
| Pin 47 | RG3 — Port G bit 3 (digital I/O) |
| Pin 48 | RG4 — Port G bit 4 (digital I/O) |
| Pin 49 | RG5 — Port G bit 5 (digital I/O) |
| Pin 50 | VDD — Digital supply voltage |
| Pin 51 | VSS — Digital ground |
| Pin 52 | RG6 — Port G bit 6 (digital I/O) |
| Pin 53 | RG7 — Port G bit 7 (digital I/O) |
| Pin 54 | VDD — Digital supply voltage |
| Pin 55 | VSS — Digital ground |
| Pin 56 | RH0 — Port H bit 0 (digital I/O) |
| Pin 57 | RH1 — Port H bit 1 (digital I/O) |
| Pin 58 | RH2 — Port H bit 2 (digital I/O) |
| Pin 59 | RH3 — Port H bit 3 (digital I/O) |
| Pin 60 | RH4 — Port H bit 4 (digital I/O) |
| Pin 61 | RH5 — Port H bit 5 (digital I/O) |
| Pin 62 | RH6 — Port H bit 6 (digital I/O) |
| Pin 63 | RH7 — Port H bit 7 (digital I/O) |
| Pin 64 | RJ0 — Port J bit 0 (digital I/O) |
| Pin 65 | RJ1 — Port J bit 1 (digital I/O) |
| Pin 66 | RJ2 — Port J bit 2 (digital I/O) |
| Pin 67 | RJ3 — Port J bit 3 (digital I/O) |
| Pin 68 | RJ4 — Port J bit 4 (digital I/O) |
| Pin 69 | RJ5 — Port J bit 5 (digital I/O) |
| Pin 70 | RJ6 — Port J bit 6 (digital I/O) |
| Pin 71 | RJ7 — Port J bit 7 (digital I/O) |
| Pin 72 | RB0/INT0 — Port B bit 0 / External interrupt 0 |
| Pin 73 | RB1/INT1 — Port B bit 1 / External interrupt 1 |
| Pin 74 | RB2/INT2 — Port B bit 2 / External interrupt 2 |
| Pin 75 | RB3/INT3/CCP2 — Port B bit 3 / External interrupt 3 / CCP2 |
| Pin 76 | RB4 — Port B bit 4 (digital I/O / interrupt-on-change) |
| Pin 77 | RB5 — Port B bit 5 (digital I/O / interrupt-on-change) |
| Pin 78 | RB6/PGC — Port B bit 6 / In-Circuit Debugger clock |
| Pin 79 | VDD — Digital supply voltage |
| Pin 80 | RB7/PGD — Port B bit 7 / In-Circuit Debugger data |
Typical Applications
PIC18LF8622T-I/PT is suitable for 6 applications: Industrial Control Panels, HVAC Climate Controllers, Motor Drive Front-Ends, Human-Machine Interface (HMI) Terminals, Instrumentation and Data Loggers, Point-of-Sale Terminals and Printers.
Industrial Control Panels
The PIC18LF8622T-I/PT suits industrial control panels with its 70 I/O pins for driving 7-segment displays, key matrices, and 24V opto-isolated inputs. The 2.0-5.5V wide-voltage range lets designers integrate it directly on 3.3V logic rails with 5V signal conditioning, while the 10 MIPS throughput runs ladder-logic and Modbus RTU state machines without timing pressure.
Recommended
HVAC Climate Controllers
The PIC18LF8622T-I/PT drives HVAC climate controllers with its 10-bit ADC for temperature/humidity sensor conditioning and PWM/CCP channels for fan speed and damper control. The nanoWatt Sleep modes reduce standby power below 1 uA for thermostats meeting EnergyStar requirements, and the 70 I/Os handle LCD glass, keypad, and relay outputs on a single chip without external glue logic.
Recommended
Motor Drive Front-Ends
The PIC18LF8622T-I/PT functions as a motor drive front-end controller, generating PWM signals for three-phase inverters and reading back current/voltage feedback through its ADC. The 40 MHz clock and 10 MIPS throughput support sensorless FOC algorithms for low-RPM BLDC pumps and fans, while 70 I/Os handle multiple motor channels plus CAN-based communication with a supervisory controller.
Recommended
Human-Machine Interface (HMI) Terminals
The PIC18LF8622T-I/PT powers HMI terminals with its 64 KB Flash holding graphical menus, the 4 KB RAM buffering LCD frame data, and 70 I/Os scanning matrix keypads and driving character or graphic LCDs. The wide 2.0-5.5V supply accepts 3.3V from PoE or 5V from USB rails, simplifying power tree design in wall-mounted operator panels.
Recommended
Instrumentation and Data Loggers
The PIC18LF8622T-I/PT suits instrumentation data loggers thanks to 64 KB Flash for storing configuration profiles and 4 KB RAM buffering sample arrays before SD-card flush. The 10-bit ADC with 16 channels multiplexes thermocouples, pressure transducers, and 4-20 mA loop inputs, while the RTC-style Timer1 with external 32.768 kHz crystal provides timestamping during low-power sleep cycles.
Recommended
Point-of-Sale Terminals and Printers
The PIC18LF8622T-I/PT drives POS terminals and receipt printers using its USART for fiscal printer communication, SPI for SD-card storage of transactions, and I2C for thermal printhead control. The 70 I/Os handle keypad, customer display, cash drawer, and barcode scanner interfaces simultaneously, while the 40 MHz performance encrypts transactions without throughput bottlenecks.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF8622T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18LF8622-I/PT | PIC18LF8722T-I/PT | PIC18LF8627T-I/PT | PIC18F8622T-I/PT | PIC18F8722T-I/PT | PIC18F8627T-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (12x12 mm) | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same |
| Program Memory (Flash) | 64 KB | 64 KB | 128 KB | 96 KB | 64 KB | 128 KB | 96 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Operating Voltage | 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 | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
| Maximum Clock 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) | 40 MHz (10 MIPS) |
| I/O Pins | 70 | 70 | 70 | 70 | 70 | 70 | 70 |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Packaging Format | Tape & Reel | Tray | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel |
| Pin Match (Drop-in) | Reference | Yes - 100% pin-to-pin | Yes - 100% pin-to-pin | Yes - 100% pin-to-pin | Yes - 100% pin-to-pin | Yes - 100% pin-to-pin | Yes - 100% pin-to-pin |
Key Differentiators
- Wide operating voltage range 2.0 V to 5.5 V (vs PIC18F8622T-I/PT)
- Same TQFP-80 footprint with pin-to-pin compatibility across Flash densities (vs PIC18LF8627T-I/PT)
- Highest Flash density drop-in option (vs PIC18LF8722T-I/PT)
Design Notes
Place one 0.1 uF decoupling capacitor on every VDD pin (11, 32, 50, 54, 79) and one bulk 10 uF tantalum on the supply rail feeding the device. The PIC18LF8622T-I/PT has five VDD pins; each must see a low-impedance path to the supply within 5 mm trace length. AVDD (pin 7) should be filtered with a ferrite bead from VDD, and AVSS (pin 8) tied directly to the ground plane to keep ADC readings within datasheet accuracy at 10-bit resolution.
Configure all unused I/O pins as digital outputs driven low, never leave them floating - floating inputs toggle randomly and consume up to 100 uA per pin in deep Sleep mode. Configure the MCLR pin (pin 43) with a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for noise immunity. The oscillator must use a crystal or resonator within 20 pF load capacitance per the datasheet, otherwise HS mode may fail to start at -40 C.
Route the ICSP signals PGC (RB6, pin 78) and PGD (RB7, pin 80) with short, parallel traces less than 50 mm in length to ensure reliable in-circuit debugging. Place the ICSP connector on the same PCB edge as the MCU with a 100-ohm series termination on PGD for noise rejection. Avoid routing digital switching signals (PWM, USART) within 5 mm of the AVDD/AVSS analog pair to minimize ADC crosstalk at full 10 ksps sampling rates.
Estimated: At 40 MHz operation with 5.5 V VDD and 70 I/Os at full swing, the PIC18LF8622T-I/PT consumes approximately 80 mA (typical 60 mA). For the TQFP-80 package with theta-JA of approximately 50 C/W on a 4-layer JEDEC test board, this translates to a 4 C temperature rise. In enclosed industrial cabinets at +70 C ambient, junction temperature remains well below the +125 C maximum. For sealed enclosures above +85 C ambient, derate the clock speed or add thermal vias beneath the TQFP thermal pad.
Compliance Information
RoHS and lead-free per Microchip product page. Not AEC-Q100 qualified - this is a commercial/industrial grade part. For automotive applications choose PIC18F8622-I/PT or PIC18F8622-E/PT extended-temperature variants.
