PIC18F8622T-I/PT - 64KB Flash 8-bit MCU, 80-TQFP | Microchip
MPN: PIC18F8622T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.62 | $7.62 |
| 10 | $7.1 | $71.00 |
| 100 | $6.45 | $645.00 |
| 500 | $5.85 | $2,925.00 |
| 1,000 | $5.3 | $5,300.00 |
PIC18F8622T-I/PT Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates an 8-bit CPU core, Flash program memory, RAM, peripherals, and I/O. The PIC18F family uses a RISC Harvard architecture with 200 ns instruction cycle at 10 MIPS, sitting within the broader hierarchy: 8-bit microcontroller -> PIC18F series -> Flash MCU -> microcontroller -> embedded processor -> semiconductor. PIC18F parts are widely used in industrial, automotive (LIN), and consumer applications where deterministic performance, robust peripherals, and mature toolchains (MPLAB X, XC8) are required.
Key features include nanoWatt power management with multiple low-power modes (Sleep, Idle, Run), 10-bit ADC with up to 16 channels, dual analog comparators, hardware multiplier, and CTMU (Charge Time Measurement Unit) for capacitive touch. The 70 I/O pins and four serial ports make the PIC18F8622T-I/PT ideal for bridging sensors, displays, and communication buses simultaneously, while on-chip Flash enables in-circuit serial programming (ICSP) and self-programmability.
The architecture combines an enhanced 16-bit instruction word with an 8-bit data path, delivering 200 ns instruction execution and a 16-bit wide Flash bus for fast code fetches. Code is organized as 32K x 16 words (64KB), and peripheral operation is highly deterministic thanks to the linear program memory map and shadow register banks for fast context saves during interrupts. The device operates from 4.2V to 5.5V across the industrial -40C to +85C temperature range (the I suffix).
Typical applications include large low-power and connectivity-rich embedded systems such as industrial control panels, automotive LIN slave nodes, home appliance user interfaces, sensor hubs with multiple serial buses, and graphics/display controllers. The wide peripheral set (CCP/ECCP, MSSP, USART, ADC, comparators) supports simultaneous motor signaling, sensor sampling, and host communication.
When designing with the PIC18F8622T-I/PT, ensure the decoupling strategy places one 100 nF ceramic capacitor near each power pin pair, plus a bulk 10 uF tantalum or aluminum-polymer capacitor on the main VDD rail. Avoid long traces on the 40 MHz oscillator pins and place the crystal within 10 mm of the OSC1/OSC2 pads. The T suffix indicates Tape & Reel packaging, and the I suffix denotes industrial temperature grade.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping procurement and engineering teams make informed sourcing decisions for legacy and active PIC18F8622 designs.
Drop-in alternatives for PIC18F8622T-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 PIC18F8622T-I/PT (same form factor and footprint) — differing in Package, Core Architecture, Operating Temperature, CCP / ECCP Modules, MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F8622-I/PT
✅ Drop-In✓ In Stock
$6.1 / Unit
View Datasheet →PIC18F8628-I/PT
✅ Drop-In✓ In Stock
$9.95 / Unit
View Datasheet →PIC18F8627-I/PT
✅ Drop-In✓ In Stock
$9.05 / Unit
View Datasheet →PIC18F8722T-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F8585T-I/PT
✅ Drop-In✓ In Stock
$11.75 / Unit
View Datasheet →PIC18LF8622T-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F8525T-I/PT
✅ Drop-In✓ In Stock
$5.12 / Unit
View Datasheet →PIC18F8520T-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F8622T-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18F (8-bit Harvard, RISC) |
| CPU | 8-bit data path, 16-bit instruction word |
| Maximum CPU Speed | 40 MHz / 10 MIPS |
| Instruction Cycle | 200 ns |
| Program Memory (Flash) | 64 KB (32K x 16 words) |
| Data RAM | 4 KB |
| Data EEPROM | 1 KB |
| Digital I/O Pins | 70 |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| Operating Temperature | -40 C to +85 C (Industrial) |
| ADC | 10-bit, up to 16 channels |
| Analog Comparators | 2 |
| USART (LIN-capable) | 2 |
| MSSP (I2C/SPI) | 2 |
| CCP / ECCP Modules | 1 / 1 |
| Timers (8-bit / 16-bit) | 2 / 3 |
| Package | 80-TQFP, 12x12 mm, 1 mm height |
| Mounting Type | Surface Mount |
| MSL Level | MSL 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
| Packaging Form | Tape & Reel (T suffix) |
PIC18F8622T-I/PT Pin Configuration
| Pin 1 | RF7/AN7 — PORTF bit 7 / Analog input 7 |
| Pin 2 | RF6/AN6/C1OUT — PORTF bit 6 / Analog input 6 / Comparator 1 output |
| Pin 3 | RF5/AN5/C2OUT — PORTF bit 5 / Analog input 5 / Comparator 2 output |
| Pin 4 | RF4/AN4 — PORTF bit 4 / Analog input 4 |
| Pin 5 | RF3/AN3 — PORTF bit 3 / Analog input 3 |
| Pin 6 | RF2/AN2 — PORTF bit 2 / Analog input 2 |
| Pin 7 | RF1/AN1 — PORTF bit 1 / Analog input 1 |
| Pin 8 | RF0/AN0 — PORTF bit 0 / Analog input 0 |
| Pin 9 | AVDD — Analog supply voltage |
| Pin 10 | AVSS — Analog ground |
| Pin 11 | RG7/AN15 — PORTG bit 7 / Analog input 15 |
| Pin 12 | RG6/AN14 — PORTG bit 6 / Analog input 14 |
| Pin 13 | RG5/AN13 — PORTG bit 5 / Analog input 13 |
| Pin 14 | RG4/AN12 — PORTG bit 4 / Analog input 12 |
| Pin 15 | RG3/AN11 — PORTG bit 3 / Analog input 11 |
| Pin 16 | RG2/AN10 — PORTG bit 2 / Analog input 10 |
| Pin 17 | RG1/AN9/C3OUT — PORTG bit 1 / Analog input 9 |
| Pin 18 | RG0/AN8 — PORTG bit 0 / Analog input 8 |
| Pin 19 | VDD — Digital supply voltage |
| Pin 20 | VSS — Digital ground |
| Pin 21 | RE7/CCP2/PMA — PORTE bit 7 / CCP2 / Parallel Master Port |
| Pin 22 | RE6/PMA — PORTE bit 6 / Parallel Master Port |
| Pin 23 | RE5/PMA — PORTE bit 5 / Parallel Master Port |
| Pin 24 | RE4/PMA — PORTE bit 4 / Parallel Master Port |
| Pin 25 | RE3/PMA — PORTE bit 3 / Parallel Master Port |
| Pin 26 | RE2/PMA — PORTE bit 2 / Parallel Master Port |
| Pin 27 | RE1/PMA — PORTE bit 1 / Parallel Master Port |
| Pin 28 | RE0/PMA — PORTE bit 0 / Parallel Master Port |
| Pin 29 | VDD — Digital supply voltage |
| Pin 30 | VSS — Digital ground |
| Pin 31 | OSC1/CLKI/RA7 — Oscillator input / PORTA bit 7 |
| Pin 32 | OSC2/CLKO/RA6 — Oscillator output / PORTA bit 6 |
| Pin 33 | RA5/AN4 — PORTA bit 5 / Analog input 4 |
| Pin 34 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 35 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / ADC VREF+ |
| Pin 36 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / ADC VREF- |
| Pin 37 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Pin 38 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Pin 39 | VSS — Digital ground |
| Pin 40 | VDD — Digital supply voltage |
| Pin 41 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pin 42 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin 43 | RB5/PGM — PORTB bit 5 / LVP programming |
| Pin 44 | RB4 — PORTB bit 4 |
| Pin 45 | RB3/CCP2 — PORTB bit 3 / CCP2 (alt) |
| Pin 46 | RB2/CCP1 — PORTB bit 2 / CCP1 |
| Pin 47 | RB1/INT1 — PORTB bit 1 / External interrupt 1 |
| Pin 48 | RB0/INT0 — PORTB bit 0 / External interrupt 0 |
| Pin 49 | VSS — Digital ground |
| Pin 50 | VDD — Digital supply voltage |
| Pin 51 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port |
| Pin 52 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port |
| Pin 53 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port |
| Pin 54 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port |
| Pin 55 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port |
| Pin 56 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port |
| Pin 57 | RD1/PSP1/TX2 — PORTD bit 1 / Parallel Slave Port / USART2 TX |
| Pin 58 | RD0/PSP0/RX2 — PORTD bit 0 / Parallel Slave Port / USART2 RX |
| Pin 59 | VSS — Digital ground |
| Pin 60 | VDD — Digital supply voltage |
| Pin 61 | RC7/RX1/DT1 — PORTC bit 7 / USART1 RX / Synchronous data |
| Pin 62 | RC6/TX1/CK1 — PORTC bit 6 / USART1 TX / Synchronous clock |
| Pin 63 | RC5/SDO1 — PORTC bit 5 / SPI1 data out |
| Pin 64 | RC4/SDI1/SDA1 — PORTC bit 4 / SPI1 data in / I2C1 data |
| Pin 65 | RC3/SCK1/SCL1 — PORTC bit 3 / SPI1 clock / I2C1 clock |
| Pin 66 | RC2/CCP1/PMA — PORTC bit 2 / CCP1 / PMP |
| Pin 67 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 osc in / CCP2 (alt) |
| Pin 68 | RC0/T1OSO/T13CKI — PORTC bit 0 / Timer1 osc out / Timer1 ext clk |
| Pin 69 | VSS — Digital ground |
| Pin 70 | VDD — Digital supply voltage |
| Pin 71 | RH7 — PORTH bit 7 |
| Pin 72 | RH6 — PORTH bit 6 |
| Pin 73 | RH5 — PORTH bit 5 |
| Pin 74 | RH4 — PORTH bit 4 |
| Pin 75 | RH3 — PORTH bit 3 |
| Pin 76 | RH2 — PORTH bit 2 |
| Pin 77 | RH1 — PORTH bit 1 |
| Pin 78 | RH0 — PORTH bit 0 |
| Pin 79 | VSS — Digital ground |
| Pin 80 | MCLR — Master clear / reset (active low) |
Typical Applications
PIC18F8622T-I/PT is suitable for 7 applications: Industrial Control Panels, Automotive LIN Slave Nodes, Home Appliance User Interfaces, Sensor Hubs with Multiple Serial Buses, Display / Graphics Controllers, Power Metering and Energy Monitoring, Medical Point-of-Care Devices.
Industrial Control Panels
The PIC18F8622T-I/PT's 70 I/O pins and dual USART (LIN-capable) make it ideal for industrial control panels driving relays, keypads, 7-segment or character LCDs, and communicating over RS-485 LIN or RS-232. With 64 KB Flash and 4 KB RAM, it can host Modbus RTU or CANopen-style master logic while monitoring 16 ADC channels for analog sensor inputs. At 40 MHz, the CPU runs control loops with 200 ns instruction resolution, sufficient for PID rates up to 1 kHz without DMA. The nanoWatt idle/sleep modes allow standby currents under 5 uA for energy-star compliant HMI terminals.
Recommended
Automotive LIN Slave Nodes
The PIC18F8622T-I/PT is a strong fit for LIN (Local Interconnect Network) slave nodes in body electronics - door modules, seat controllers, mirror adjusters, and HVAC flaps. Its LIN-capable USART implements LIN 1.3/2.0 with hardware autobaud detection, while the 4.2-5.5V supply matches the 12V automotive battery rail after a 5V LDO. The 64 KB Flash stores the LIN slave state machine plus diagnostic firmware (UDS-style services). With 70 I/O, it can drive multiple motors and read multiple position feedback sensors without external I/O expanders. The industrial -40C to +85C grade suits cabin-mounted ECUs.
Recommended
Home Appliance User Interfaces
The PIC18F8622T-I/PT fits washing machines, dishwashers, ovens, and induction cooktops that need a single MCU driving a TFT or character LCD, capacitive touch keys, and motor control. Its 70 I/O accommodate multi-button keypads plus triac-fired heater outputs, while two CCP/ECCP modules can generate the PWM for variable-speed pumps or BLDC fans. The CTMU peripheral enables capacitive touch sensing directly without an external IC, reducing BOM cost. 64 KB Flash comfortably hosts UI graphics libraries plus the safety state machine required by IEC 60730 class B appliance firmware.
Recommended
Sensor Hubs with Multiple Serial Buses
For sensor hubs aggregating UART, SPI, and I2C devices, the PIC18F8622T-I/PT provides two MSSP (configurable as I2C or SPI) and two USART channels simultaneously. Engineers can attach a SPI IMU, an I2C temperature/pressure sensor cluster, and two UART peripherals (such as a GPS module and a Bluetooth HCI) with no external mux. The 10-bit ADC with up to 16 channels handles analog transducers alongside digital sensors. 4 KB RAM is adequate for sensor-fusion state and protocol buffers. The 40 MHz CPU keeps up with 1 MSPS ADC scans plus digital sensor polling.
Recommended
Display / Graphics Controllers
With 70 I/O and 64 KB Flash, the PIC18F8622T-I/PT can drive parallel TFT displays up to QVGA resolution through software rendering or external display controllers. Its PMP (Parallel Master Port) capability maps directly to common TFT data/control buses. Two MSSP ports can simultaneously run a touch controller over SPI and an external graphics controller over I2C. The 200 ns instruction cycle allows frame-buffer updates at 30 Hz with minimal peripheral overhead. PIC18F's deterministic interrupt latency keeps display refresh jitter-free.
Recommended
Power Metering and Energy Monitoring
Three 16-bit timers combined with the 10-bit ADC and dual analog comparators make the PIC18F8622T-I/PT suitable for single-phase and three-phase energy metering. The CCP modules perform zero-cross detection and pulse counting, while the 4 KB RAM holds calibration constants and accumulated energy registers. With LIN or USART output, the meter can report to a building management system. nanoWatt sleep modes keep quiescent power below IEC 62053-21 limits for residential meters. The 80-TQFP provides ample ground pins for the analog/digital isolation required by metrology standards.
Recommended
Medical Point-of-Care Devices
Medical bench-top analyzers and patient monitors leverage the PIC18F8622T-I/PT's deterministic interrupt response, dual serial buses, and 16 ADC channels for multi-parameter sensing (pulse oximetry, temperature, glucose). With 64 KB Flash it hosts the safety-relevant control loop plus the IEC 62304 class B firmware. Dual USARTs link to a Bluetooth or Wi-Fi host module and a printer/display. Hardware Watchdog Timer, BOR (Brown-Out Reset), and code-protect features support FDA submission documentation. Industrial temperature grade covers clinical-environment operating ranges.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F8622T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F8622-I/PT | PIC18F8628-I/PT | PIC18F8627-I/PT | PIC18F8722T-I/PT | PIC18F8585T-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 80-TQFP (12x12 mm) | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same |
| Program Flash | 64 KB | 64 KB (same) | 96 KB (+50%) | 96 KB (+50%) | 128 KB (+100%) | 48 KB (-25%) |
| RAM | 4 KB | 4 KB (same) | 8 KB (+100%) | 8 KB (+100%) | 4 KB (same) | 3 KB (-25%) |
| EEPROM | 1 KB | 1 KB (same) | 1 KB (same) | 1 KB (same) | 1 KB (same) | 1 KB (same) |
| Max CPU Speed | 40 MHz / 10 MIPS | 40 MHz (same) | 40 MHz (same) | 40 MHz (same) | 40 MHz (same) | 40 MHz (same) |
| Supply Voltage | 4.2 V to 5.5 V | 4.2-5.5 V (same) | 4.2-5.5 V (same) | 4.2-5.5 V (same) | 4.2-5.5 V (same) | 4.2-5.5 V (same) |
| Digital I/O Pins | 70 | 70 (same) | 70 (same) | 70 (same) | 70 (same) | 70 (same) |
| USB 2.0 Support | No | No | No | Yes (SIE integrated) | No | No |
| Temperature Grade | Industrial (-40C to +85C) | Industrial (same) | Industrial (same) | Industrial (same) | Industrial (same) | Industrial (same) |
| Packaging Form | Tape & Reel (T) | Tray (no T) | Tray (no T) | Tray (no T) | Tape & Reel | Tape & Reel |
Key Differentiators
- Highest Flash/RAM in the PIC18F86xx family without USB (vs PIC18F8722T-I/PT)
- Drop-in path to USB connectivity without PCB rework (vs PIC18F8627-I/PT)
- Maximum I/O count (70 pins) for 5V-class PIC18F (vs PIC18F6722T-I/PT (64-pin TQFP))
- 5V-only operation optimized for industrial/automotive 12V-24V rails (vs PIC18LF8622T-I/PT)
- Mature PIC18F legacy compatibility with extensive code base (vs Newer PIC18F K-series (e.g. PIC18F67K90T-I/PT, 64-pin))
Design Notes
Estimated: at 40 MHz CPU speed and 5V supply, the PIC18F8622T-I/PT core current is approximately 16 mA (0.4 mA/MHz) per the PIC18F8622 datasheet DC characteristics. With 70 I/O each sourcing/sinking 5 mA, additional I/O current can reach 200 mA. Place one 100 nF ceramic decoupling capacitor near each of the five VDD/AVDD pins (19, 29, 40, 50, 60, 70) plus one bulk 10 uF tantalum capacitor on the main rail. Use a ferrite bead or 10 ohm resistor between digital VDD and analog AVDD to isolate ADC reference noise.
The 80-TQFP (12x12 mm) package has 0.5 mm pitch with thermal pad requirements. Route all signal traces on inner layers to keep the outer layers free for ground plane and wide power pours. Place the 40 MHz crystal within 10 mm of OSC1/OSC2 pins (31, 32) and surround it with a guarded ground ring. MCLR (pin 80) requires a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for stable reset; some designs add a diode for faster power-down reset.
Do not confuse the PIC18F8622T-I/PT (4.2-5.5V, F suffix) with the PIC18LF8622T-I/PT (2.0-5.5V, LF suffix) - the F variant will not operate reliably below 4.0V. Ensure CONFIG1H is set correctly for the chosen oscillator mode (HS, XT, EC, RC) and that the configuration words are programmed with the correct watchdog and brown-out settings. The ICSP pins (RB6/RB7 = PGC/PGD) must not be pulled low during reset or the device will enter programming mode inadvertently.
The 80-TQFP package has a thermal resistance theta_JA of approximately 60 C/W when mounted on a JEDEC 4-layer test board. Estimated: at maximum load (CPU running full speed, 70 I/O switching) total power dissipation can reach 0.6-0.8 W. In enclosed industrial enclosures with elevated ambient (>60C), consider copper pours on all four layers and thermal vias under the central pad to maintain junction temperature below the 150C absolute maximum.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - for automotive AEC-Q100 applications consider PIC18F67K90-E/PT or similar K-series qualified variants. MSL Level 3 (per JEDEC J-STD-020).
