PIC18LF6622T-I/PT - 8-bit 40MHz MCU, 64KB Flash, 64-TQFP | Microchip
MPN: PIC18LF6622T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.92 | $8.92 |
| 10 | $8.03 | $80.30 |
| 100 | $7.14 | $714.00 |
| 500 | $6.61 | $3,305.00 |
| 1,000 | $5.96 | $5,960.00 |
PIC18LF6622T-I/PT Overview
A microcontroller (MCU) is an integrated circuit that combines a CPU core, non-volatile program memory (Flash), volatile working memory (RAM), and a range of peripheral interfaces on a single silicon die. Within the broader semiconductor taxonomy, an MCU belongs to the class of embedded processors and, more specifically, the sub-family of 8-bit microcontrollers (8-bit CPU -> MCU -> microcontroller -> embedded processor -> semiconductor). The 'LF' prefix designates Microchip's nanoWatt extended-voltage line, capable of operating across 1.8 V, 2.5 V, 3.3 V, and 5 V rails - a critical feature for portable or battery-driven designs that demand ultra-low standby current.
Key features include the ECAN module supporting CAN 2.0B active/passive and listen-only modes, a 10-bit A/D converter with up to 12 input channels, nanoWatt power management with multiple idle and sleep modes, and an integrated programmable 8-bit or 16-bit timer/counter array. The wide 1.8 V-3.6 V supply range (typical for LF variants) enables direct Li-ion or 2xAA battery operation while still supporting 5 V system interfaces through 5 V tolerant digital I/O.
Typical applications include automotive body and HVAC networks (via ECAN and LIN), industrial sensor hubs (multiple UART + I2C sensor aggregation), home automation gateways, and large-display human-machine interface (HMI) controllers that benefit from the 70 I/O lines. A 64-pin TQFP with 0.5 mm pitch allows hand-solderable prototyping while remaining compatible with standard SMT lines.
When designing with this part, ensure the supply voltage falls within the LF family's 1.8 V-3.6 V window for the LF suffix; the non-LF PIC18F6622 variant supports 2.0 V-5.5 V. Decouple VDD/VSS pairs with 100 nF ceramics placed within 5 mm of each pair. The CAN bus requires a transceiver IC such as the MCP2551; the MCU's ECAN peripheral handles only protocol-layer tasks.
This page synthesizes distributor pricing, drop-in same-package alternatives, application references, and design notes that complement the manufacturer datasheet.
Drop-in alternatives for PIC18LF6622T-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 PIC18LF6622T-I/PT (same form factor and footprint) — differing in Core Architecture, Package, Program Memory (Flash), Timers, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18LF6622-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F6622T-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18LF65K40T-I/MR
✅ Drop-In✓ In Stock
$2.32 / Unit
View Datasheet →PIC18LF6525T-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.95 / Unit
View Datasheet →PIC18LF6520T-I/PT
✅ Drop-In✓ In Stock
$5.25 / Unit
View Datasheet →PIC18LF6585T-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.1 / Unit
View Datasheet →PIC18LF6622T-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit (PIC18) |
| Family | PIC18LF66xx (nanoWatt) |
| Program Memory (Flash) | 64 KB (32K x 16) |
| RAM | 4 KB |
| Operating Frequency (max) | 40 MHz |
| Supply Voltage Range (LF) | 1.8 V to 3.6 V (compatible with 1.8 V / 2.5 V / 3.3 V / 5 V system rails) |
| I/O Pins | 70 |
| Package | 64-pin TQFP (PT), 10x10 mm, 0.5 mm pitch |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40 C to +85 C (Industrial, 'I' suffix) |
| A/D Converter | 10-bit, up to 12 channels |
| CAN | ECAN (Enhanced CAN 2.0B active/passive) |
| Serial Interfaces | 2x MSSP (I2C/SPI), 2x EUSART (LIN-capable) |
| Timers | Multiple 8/16-bit |
| RoHS Status | Compliant (Pb Free per JEDEC J-STD-609) |
| MSL Level | 3 (per JEDEC J-STD-020) |
| Packing | Tape and Reel (T suffix) |
PIC18LF6622T-I/PT 64-pin tqfp (pt), 10x10 mm, 0.5 mm pitch Pin Configuration Guide
Pin configuration for PIC18LF6622T-I/PT (64-pin tqfp (pt), 10x10 mm, 0.5 mm pitch package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC18LF6622T-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC18LF6622T-I/PT is suitable for 6 applications: Automotive Body Electronics (CAN/LIN Network Nodes), Industrial Sensor Hub / Gateway, Home Automation Controller, Human-Machine Interface (HMI) Panels, Medical Monitoring Devices (Class-II Peripherals), Power Metering and Sub-Metering.
Automotive Body Electronics (CAN/LIN Network Nodes)
The PIC18LF6622T-I/PT's integrated ECAN module supporting CAN 2.0B active/passive modes and dual LIN-capable EUSARTs make it a strong fit for body control modules and gateway nodes. ECAN handles the protocol layer offloading the CPU at 10 MIPS, while the LF family's 1.8 V-3.6 V supply range allows direct operation from a 3.3 V regulated rail after crank transients. Pair with an external CAN transceiver such as the MCP2551 (5 V) or TLE7250-3 (3.3 V). The 64 KB Flash comfortably holds CANopen or J1939 stacks alongside application logic, and the -40 C to +85 C industrial temperature range covers cabin and under-hood sensor-cluster placements. Designers should reserve one UART for LIN, one EUSART for K-line diagnostics, and the ECAN module for chassis/body CAN, leaving the two MSSP ports for SPI sensors or I2C peripherals.
Recommended
Industrial Sensor Hub / Gateway
With 70 digital I/O lines, dual MSSP (I2C + SPI) ports, and dual EUSARTs, the PIC18LF6622T-I/PT can aggregate data from multiple sensors concurrently - a single MCU can poll an I2C temperature/humidity sensor, a SPI ADC, a Modbus UART, and a LIN sub-network. The 4 KB RAM holds incoming telemetry buffers and the 64 KB Flash accommodates Modbus RTU or proprietary field protocols. The 1.8 V minimum supply permits 2xAA battery-backed operation during outages. For noisy industrial environments, place 100 nF X7R ceramics within 5 mm of every VDD/VSS pair and use the internal 16 MHz HFINTOSC during the LF sleep/idle transitions. The wide -40 C to +85 C range enables cabinet-free mounting in many factory locations.
Recommended
Home Automation Controller
The PIC18LF6622T-I/PT's combination of ECAN, dual UARTs, dual I2C/SPI, and 70 I/O pins lets a single chip act as a low-cost home-automation concentrator linking wired sensor buses (CAN or RS-485 over UART), wireless transceiver modules over SPI, and user keypads/display over I/O. The LF 1.8 V-3.6 V VDD range supports direct 3.3 V operation from USB or PoE-derived rails, while nanoWatt sleep modes drop quiescent current to <100 nA for always-listening battery remotes. Pair the ECAN with a CAN-to-WiFi gateway bridge or use the EUSARTs for RS-485 Modbus. Designers should map I/O expansion through I2C GPIO expanders (e.g., MCP23017) when more than 70 lines are required.
Recommended
Human-Machine Interface (HMI) Panels
The PIC18LF6622T-I/PT's 70 I/O lines and 4 KB RAM are well-matched to small graphical or segmented LCD HMI panels driving 4x4 keypads, multiple LEDs, character LCDs, and rotary encoders simultaneously. At 40 MHz / 10 MIPS the core has ample headroom to scan key matrices, debounce inputs, and refresh the display at 60 Hz without dropping frames. The wide VDD range allows the MCU to share a 3.3 V rail with the LCD driver or accept a backlight-boosted 5 V supply through level shifters. The Flash memory at 64 KB stores full Unicode font tables and bitmaps; the RAM buffers the active screen. Industrial -40 C to +85 C operation supports kiosk and outdoor-mounted panels.
Recommended
Medical Monitoring Devices (Class-II Peripherals)
For non-life-support medical peripherals such as blood-pressure cuffs, spirometers, or therapy-device HMIs, the PIC18LF6622T-I/PT offers the LF family's deterministic low-power behavior, a robust 10-bit A/D for sensor signal conditioning, and 64 KB Flash for OEM calibration tables and IEC 62366 usability files. The 1.8 V-3.6 V range supports direct Li-ion battery operation, and nanoWatt sleep preserves battery life between measurements. The industrial -40 C to +85 C window covers typical clinical and home-use environments. ECAN or USB-via-serial-bridge enables connection to a host monitoring station. Designers should still validate IEC 60601-1 EMI/ESD margins and consider redundant watchdogs.
Recommended
Power Metering and Sub-Metering
The PIC18LF6622T-I/PT can serve as the compute core of single- or poly-phase power meters, where its 10-bit A/D samples current transformers, its dual UART interfaces with optical IrDA or RS-485 modems, and its ECAN or MSSP connects to a home energy network. The 4 KB RAM buffers interval energy records before transmission, while 64 KB Flash stores tariff tables and calibration constants. The LF 1.8 V-3.6 V range enables 3.3 V operation from a switching supply or directly from a 5 V rail through a low-Iq LDO. NanoWatt sleep modes drop standby consumption during outages. Designers should use the ADC in differential mode and add anti-aliasing RC filters on each channel.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF6622T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18LF6622-I/PT | PIC18F6622T-I/PT | PIC18LF65K40T-I/MR | PIC18LF6525T-I/PT | PIC18LF6520T-I/PT | PIC18LF6585T-I/PT |
|---|---|---|---|---|---|---|---|
| Package | 64-TQFP (PT) 10x10 mm | 64-TQFP (PT) - same | 64-TQFP (PT) - same | 64-TQFP (MR) - same | 64-TQFP (PT) - same | 64-TQFP (PT) - same | 64-TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 64 KB | 64 KB | 32 KB (-50%) | 48 KB (-25%) | 32 KB (-50%) | 48 KB (-25%) |
| RAM | 4 KB | 4 KB | 4 KB | 2 KB (-50%) | 3 KB (-25%) | 2 KB (-50%) | 3 KB (-25%) |
| Supply Voltage Range | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 2.0 V to 5.5 V (F) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) |
| ECAN (CAN 2.0B) | Yes (ECAN) | Yes | Yes | Yes | No | No | Yes |
| I/O Pins | 70 | 70 | 70 | 60 | 70 | 70 | 70 |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| RoHS / Pb-Free | Yes (Pb Free) | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Largest Flash in the LF66xx 64-TQFP family (vs PIC18LF6520T-I/PT)
- Integrated ECAN at the LF voltage range (vs PIC18LF6525T-I/PT)
- 1.8 V minimum VDD for battery operation (vs PIC18F6622T-I/PT)
Design Notes
The PIC18LF6622T-I/PT integrates an LF nanoWatt voltage regulator block; pair AVDD/AVSS with a 100 nF X7R ceramic placed within 5 mm of the pins, and add a parallel 10 uF bulk capacitor if the 3.3 V rail is shared with a CAN transceiver. The LF variant allows direct 1.8 V operation; do not exceed 3.6 V on VDD. For sleep-mode leakage below 100 nA, ensure all I/O pins are configured as inputs with the internal weak pull-ups disabled (or defined logic levels externally) before entering Sleep, and disable any unused peripheral modules via PMD bits.
Use a 4-layer PCB with a continuous ground plane beneath the 64-TQFP footprint. Route the 40 MHz clock trace (OSC1/RA6 or OSC2/RA7) over a continuous ground pour, keep it <25 mm, and avoid running it parallel to switching traces. Place the 10 MHz or 20 MHz crystal within 5 mm of the OSC pins with symmetric ground-side loading caps; for HFINTOSC-only designs, leave the OSC pins as standard I/O to free RA6/RA7. Decouple every VDD/VSS pair individually with 100 nF X7R plus a 10 uF bulk capacitor near the IC.
Do not connect the ECAN TX/RX pins directly to a CAN bus - the ECAN peripheral is protocol-layer only and requires an external transceiver (MCP2551 for 5 V, TLE7250-3 for 3.3 V, MCP2562 for high-speed). Avoid using the analog inputs shared with VDD/AVDD-related functions during ADC conversions if precision matters; use separate analog and digital supply traces joined at a single point. Finally, confirm the boot/configuration bits match the VDD voltage window - configurations written for 5 V operation on the PIC18F6622 may not match the LF's 3.3 V maximum without modification.
Compliance Information
RoHS compliant per Microchip product page. AEC-Q100 automotive qualification not specified for the LF industrial ('I') variant - use the PIC18F6622-I/PT equivalent automotive-qualified device if required. Conflict-minerals statement available from Microchip.
