PIC18LF8628T-I/PT - 8-Bit PIC MCU 96KB Flash 40MHz TQFP-80 | Microchip
MPN: PIC18LF8628T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.4 | $8.40 |
| 10 | $7.65 | $76.50 |
| 100 | $6.8 | $680.00 |
| 500 | $6.1 | $3,050.00 |
| 1,000 | $5.46 | $5,460.00 |
PIC18LF8628T-I/PT Overview
An 8-bit microcontroller (MCU) is a programmable computing IC built around a fixed-width data path, on-chip Flash for code storage, and a peripheral set matched to embedded control tasks such as motor drives, user interfaces, and sensor aggregation. Within the broader taxonomy, an 8-bit MCU belongs to the microcontroller family, which itself falls under embedded processors, then integrated circuits, then semiconductors. PIC18F devices specifically use Microchip's enhanced Harvard architecture with 16-bit instructions and 8-bit data, giving higher code density than legacy 8051 cores.
Key features of the PIC18LF8628T-I/PT include a 40 MHz maximum CPU clock, 10 MIPS instruction throughput at 40 MHz, an enhanced 16-bit instruction set with hardware multiply, an internal oscillator block, an integrated 12-bit ADC with up to 16 channels, two analog comparators, a 10-bit PWM module, two USART modules, an MSSP (SPI/I2C) module, and 70 I/O pins. The 80-pin TQFP package provides ample I/O for parallel buses and segmented LCD driving.
The PIC18LF8628 silicon uses an enhanced Harvard architecture that separates program and data buses so the CPU can fetch an instruction and read a data operand in the same cycle. With 96 KB of self-programmable Flash, the LF8628 supports in-application reprogramming via bootloader, and the 1024-byte data EEPROM allows non-volatile storage of calibration data without external serial memory. Internal oscillator trimming and a wide analog front-end reduce bill-of-materials cost.
Typical applications include industrial automation controllers, HVAC control boards, automotive body and instrument clusters, point-of-sale terminals, building automation, and embedded graphical user interfaces that require large pin count and A/D-rich front ends. The wide operating temperature range (-40C to +85C industrial grade) supports outdoor and factory deployments.
When designing with the PIC18LF8628T-I/PT, place 100 nF decoupling capacitors adjacent to every VDD/VSS pair and add a 10 uF bulk capacitor near the regulator output. The 80-pin TQFP requires a 12 mm x 12 mm land pattern with 0.5 mm pitch traces routed on inner PCB layers for signal integrity. Reserve MCLR pin pull-up and ICSP programming pads if in-circuit debugging is needed.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, accelerating your component selection process.
Drop-in alternatives for PIC18LF8628T-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 PIC18LF8628T-I/PT (same form factor and footprint) — differing in Package, I/O Pins, ADC, Core Architecture, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18LF8722T-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF8628-I/PT
✅ Drop-In✓ In Stock
$4.2 / Unit
View Datasheet →PIC18F8628T-I/PT
✅ Drop-In✓ In Stock
$6.4 / Unit
View Datasheet →PIC18LF8680T-I/PT
✅ Drop-In✓ In Stock
$3.85 / Unit
View Datasheet →PIC18LF8722-I/PT
✅ Drop-In✓ In Stock
$7.85 / Unit
View Datasheet →PIC18LF8585-I/PT
✅ Drop-In✓ In Stock
$6.2 / Unit
View Datasheet →PIC18LF8628T-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18F Enhanced Harvard, 8-bit data / 16-bit instruction |
| CPU Speed | 40 MHz maximum, 10 MIPS |
| Program Memory (Flash) | 96 KB (48K x 16 words) |
| Data SRAM | 4 KB |
| Data EEPROM | 1024 bytes |
| Operating Voltage Range | 2.0 V to 5.5 V (LF variant) |
| I/O Pins | 70 |
| ADC | 12-bit, up to 16 channels |
| Package | 80-pin TQFP (12 x 12 x 1 mm) |
| Operating Temperature | -40C to +85C (industrial) |
| Serial Interfaces | 2x USART, MSSP (SPI / I2C) |
| PWM Modules | 10-bit resolution, multiple channels |
| Timers | Multiple 8-bit and 16-bit timers |
| Comparators | 2 analog comparators |
| Mounting Type | Surface Mount (Tape & Reel) |
| RoHS Status | Compliant |
PIC18LF8628T-I/PT Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | RA0 — Digital I/O / analog AN0 |
| Pin 3 | RA1 — Digital I/O / analog AN1 |
| Pin 4 | RA2 — Digital I/O / analog AN2 |
| Pin 5 | RA3 — Digital I/O / analog AN3 |
| Pin 6 | RA4 — Digital I/O / analog AN4 / T0CKI |
| Pin 7 | RA5 — Digital I/O / analog AN5 / SS |
| Pin 8 | RE0 — Digital I/O / analog AN6 / RD |
| Pin 9 | RE1 — Digital I/O / analog AN7 / WR |
| Pin 10 | RE2 — Digital I/O / analog AN8 / CS |
| Pin 11 | VDD — Positive supply (2.0 V to 5.5 V) |
| Pin 12 | VSS — Ground |
| Pin 13 | OSC1 — Crystal / external clock input |
| Pin 14 | OSC2 — Crystal / clock output |
| Pin 15 | RC0 — Digital I/O / T1OSO / T1CKI |
| Pin 16 | RC1 — Digital I/O / T1OSI / CCP2 |
| Pin 17 | RC2 — Digital I/O / CCP1 |
| Pin 18 | RC3 — Digital I/O / SCL / SCK |
| Pin 19 | RD0 — Digital I/O / PSP0 |
| Pin 20 | RD1 — Digital I/O / PSP1 |
| Pin 21 | RD2 — Digital I/O / PSP2 |
| Pin 22 | RD3 — Digital I/O / PSP3 |
| Pin 23 | RC4 — Digital I/O / SDA / SDI |
| Pin 24 | RC5 — Digital I/O / SDO |
| Pin 25 | RC6 — Digital I/O / TX / CK |
| Pin 26 | RC7 — Digital I/O / RX / DT |
| Pin 27 | RD4 — Digital I/O / PSP4 |
| Pin 28 | RD5 — Digital I/O / PSP5 / P1B |
| Pin 29 | RD6 — Digital I/O / PSP6 / P1C |
| Pin 30 | RD7 — Digital I/O / PSP7 / P1D |
| Pin 31 | VSS — Ground |
| Pin 32 | VDD — Positive supply |
| Pin 33 | RB0 — Digital I/O / INT0 / FLT0 |
| Pin 34 | RB1 — Digital I/O / INT1 |
| Pin 35 | RB2 — Digital I/O / INT2 |
| Pin 36 | RB3 — Digital I/O / INT3 / CCP2 |
| Pin 37 | RB4 — Digital I/O / KBI0 |
| Pin 38 | RB5 — Digital I/O / KBI1 / PGM |
| Pin 39 | RB6 — Digital I/O / KBI2 / PGC |
| Pin 40 | RB7 — Digital I/O / KBI3 / PGD |
| Pin 41 | AVDD — Analog positive supply |
| Pin 42 | AVSS — Analog ground |
| Pin 43 | RF1 — Digital I/O / analog AN11 / C2OUT |
| Pin 44 | RF2 — Digital I/O / analog AN12 |
| Pin 45 | RF3 — Digital I/O / analog AN13 |
| Pin 46 | RF4 — Digital I/O / analog AN14 |
| Pin 47 | RF5 — Digital I/O / analog AN15 |
| Pin 48 | RF6 — Digital I/O |
| Pin 49 | RF7 — Digital I/O |
| Pin 50 | RG0 — Digital I/O / CCP3 / P3A |
| Pin 51 | RG1 — Digital I/O / TX2 / CK2 |
| Pin 52 | RG2 — Digital I/O / RX2 / DT2 |
| Pin 53 | RG3 — Digital I/O / CCP4 / P3D |
| Pin 54 | RG4 — Digital I/O / CCP5 / P1E |
| Pin 55 | RH0 — Digital I/O / analog AN16 |
| Pin 56 | RH1 — Digital I/O / analog AN17 |
| Pin 57 | RH2 — Digital I/O / analog AN18 |
| Pin 58 | RH3 — Digital I/O / analog AN19 |
| Pin 59 | RH4 — Digital I/O |
| Pin 60 | RH5 — Digital I/O |
| Pin 61 | RH6 — Digital I/O |
| Pin 62 | RH7 — Digital I/O |
| Pin 63 | RJ0 — Digital I/O |
| Pin 64 | RJ1 — Digital I/O |
| Pin 65 | RJ2 — Digital I/O |
| Pin 66 | RJ3 — Digital I/O |
| Pin 67 | RJ4 — Digital I/O |
| Pin 68 | RJ5 — Digital I/O |
| Pin 69 | RJ6 — Digital I/O |
| Pin 70 | RJ7 — Digital I/O |
| Pin 71 | RK0 — Digital I/O / PSP8 |
| Pin 72 | RK1 — Digital I/O / PSP9 |
| Pin 73 | RK2 — Digital I/O / PSP10 |
| Pin 74 | RK3 — Digital I/O / PSP11 |
| Pin 75 | RK4 — Digital I/O / PSP12 |
| Pin 76 | RK5 — Digital I/O / PSP13 |
| Pin 77 | RK6 — Digital I/O / PSP14 |
| Pin 78 | RK7 — Digital I/O / PSP15 |
| Pin 79 | VDD — Positive supply |
| Pin 80 | VSS — Ground |
Typical Applications
PIC18LF8628T-I/PT is suitable for 7 applications: Industrial Automation Controllers, HVAC Control Boards, Automotive Body and Instrument Clusters, Point-of-Sale Terminals, Building Automation Gateways, Embedded Graphical User Interfaces, Test and Measurement Front Panels.
Industrial Automation Controllers
The PIC18LF8628T-I/PT fits industrial automation because its 96 KB Flash, 4 KB SRAM, 16-channel 12-bit ADC, and 70 I/O pins can directly drive stepper drivers, read multi-zone thermocouples through external amplifiers, and multiplex 7-segment displays. The wide 2.0 V to 5.5 V supply lets a single MCU accept a 24 V industrial rail stepped down to 5 V or 3.3 V. Its 40 MHz / 10 MIPS throughput is sufficient for PID loop execution at 1 kHz update rate. The -40 C to +85 C industrial temperature range supports factory-floor deployments.
Recommended
HVAC Control Boards
In HVAC controllers, the PIC18LF8628T-I/PT benefits from its 16 ADC channels (multiple temperature sensors, pressure transducers, humidity probes), 70 I/O pins (relay triac drivers, keypad scan, LCD bus), and low-voltage operation suitable for 3.3 V regulator rails. The 10 MIPS throughput can manage PID fan/blower loops and communicate with thermostats via UART or SPI. The 1024-byte data EEPROM is ideal for storing calibration constants and user-set schedules. The PIC18LF8680T-I/PT downgrades memory if cost is the priority.
Recommended
Automotive Body and Instrument Clusters
Although the PIC18LF8628T-I/PT is not AEC-Q100 qualified, it is widely used in non-safety automotive body electronics such as door modules, mirror controllers, instrument cluster displays, and HVAC user interfaces. Its 16-channel 12-bit ADC samples multiple sensor inputs simultaneously, and the 70 I/O pins drive TFT displays, keypads, and LED matrices. Engineers typically pair it with CAN or LIN transceivers for in-vehicle networking. For AEC-Q100 automotive safety applications, designers must choose an automotive-qualified variant.
Recommended
Point-of-Sale Terminals
Point-of-sale terminals benefit from the PIC18LF8628T-I/PT's 96 KB Flash (sufficient for USB stack, display rendering, and keypad handling), 4 KB SRAM (transaction buffers), and 70 I/O pins (thermal printer drive, keypad scan, LCD, magnetic-stripe reader). The MSSP SPI/I2C module connects to external secure element chips and EEPROM for cryptographic keys. The 1024-byte internal data EEPROM stores merchant configuration without external storage. Cost-effective 80-pin TQFP enables compact POS board layouts.
Recommended
Building Automation Gateways
Building automation gateways rely on the PIC18LF8628T-I/PT to bridge sensor networks (Modbus, BACnet, KNX) with cloud uplinks. The 16 ADC channels aggregate analog sensors (CO2, light, occupancy), while the dual USARTs handle RS-485 bus arbitration. The 70 I/O drive relays, dimmers, and LCD status panels. With 4 KB SRAM, the MCU can buffer network frames before forwarding to higher-level processors. The wide 2.0 V to 5.5 V supply tolerates long cable-derived rail noise.
Recommended
Embedded Graphical User Interfaces
Embedded GUIs with TFT or OLED panels choose the PIC18LF8628T-I/PT because 96 KB Flash holds frame-buffer descriptors, font tables, and screen flows; 4 KB SRAM holds temporary draw buffers; and 70 I/O drive the parallel display bus, touch controller, and backlight PWM. The 10 MIPS throughput is adequate for low-color-depth UIs at 30 Hz refresh when paired with an external display controller. The 1024-byte data EEPROM stores user preferences across reboots.
Recommended
Test and Measurement Front Panels
Bench instruments and test fixtures use the PIC18LF8628T-I/PT for front-panel control: rotary encoder, keypad, function buttons, OLED display, and USB-to-host link. The 16 ADC channels read internal sensor data such as board temperature or fan tachometer, while the dual USARTs communicate with the main DSP or FPGA. The 1024-byte data EEPROM stores calibration certificates. The 80-pin TQFP footprint integrates seamlessly into 4-layer PCBs alongside precision analog front ends.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF8628T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18LF8722T-I/PT | PIC18LF8628-I/PT | PIC18F8628T-I/PT | PIC18LF8680T-I/PT | PIC18LF8585-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (12x12) | TQFP-80 (12x12) - same | TQFP-80 (12x12) - same | TQFP-80 (12x12) - same | TQFP-80 (12x12) - same | TQFP-80 (12x12) - same |
| Program Flash | 96 KB | 128 KB (+33%) | 96 KB (same) | 96 KB (same) | 64 KB (-33%) | 48 KB (-50%) |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 3 KB |
| EEPROM | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes |
| Operating Voltage | 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 (non-LF) | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| I/O Pins | 70 | 70 | 70 | 70 | 70 | 70 |
| ADC Channels | 16 channels x 12-bit | 16 channels x 12-bit | 16 channels x 12-bit | 16 channels x 12-bit | 12 channels x 12-bit | 12 channels x 12-bit |
| AEC-Q100 | Not qualified | Not qualified | Not qualified | Not qualified | Not qualified | Not qualified |
Key Differentiators
- Larger Flash than the LF8680 (vs PIC18LF8680T-I/PT)
- More ADC channels than LF8585 (vs PIC18LF8585-I/PT)
- Lower-voltage operation than PIC18F8628 (vs PIC18F8628T-I/PT)
Design Notes
Place a 100 nF ceramic decoupling capacitor adjacent to every VDD/VSS pair on the PIC18LF8628T-I/PT and add a single 10 uF bulk capacitor near the regulator output. The 80-pin TQFP has multiple VDD/VSS pins distributed across the package, and failing to decouple each pair can cause brownouts under high-frequency switching loads. Analog supply AVDD should be filtered with a ferrite bead and 100 nF cap to keep ADC readings stable.
The 80-pin TQFP uses a 0.5 mm pitch footprint (12 mm x 12 mm body). Route signal traces on inner PCB layers for signal integrity, and keep a continuous ground plane beneath the device. Reserve MCLR pull-up, ICSP PGC/PGD test pads, and OSC1/OSC2 crystal traces short and symmetric. A 4-layer PCB is recommended for mixed-signal designs because the analog front end is sensitive to digital switching noise.
Do not operate the PIC18LF8628T-I/PT above 5.5 V - this is the LF variant with a 2.0 V to 5.5 V supply range. Substituting the non-LF PIC18F8628T-I/PT on the same board without confirming the 4.2 V minimum supply can latch up or damage the device at lower voltages. Also note that pins RE3, RG3, RG4, RH7, RJ7, and RK7 may be remapped as alternate functions; verify your configuration bits against the datasheet before locking the design.
When driving long cables or high-speed peripherals, add source-series termination on outputs driving more than 50 mm of trace to prevent ringing. The MSSP SPI bus can run up to FOSC/4 (10 MHz at 40 MHz clock) but signal integrity deteriorates above 5 MHz without careful layout. For 12-bit ADC accuracy, place analog traces away from switching digital lines and use a guarded analog ground plane.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - for automotive safety applications, choose an automotive-qualified PIC18 derivative.
