PIC18LF8628-I/PT - 96KB Flash 8-bit MCU, 80-pin TQFP | Microchip
料号： PIC18LF8628-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6 | $6.00 |
| 10 | $5.5 | $55.00 |
| 100 | $5.1 | $510.00 |
| 500 | $4.7 | $2,350.00 |
| 1,000 | $4.2 | $4,200.00 |
PIC18LF8628-I/PT 概述
An 8-bit microcontroller (MCU) is a programmable computation engine built around an 8-bit data path, ROM/Flash for program storage, RAM for data, and a fixed set of on-chip peripherals (ADC, timers, UART/SPI/I2C, PWM). The PIC18 family is Microchip's high-pin-count, register-rich 8-bit line positioned between baseline PIC10/12/16 and 16-bit dsPIC/PIC24 architectures; the LF sub-family adds nanoWatt XLP technology for battery-friendly sleep currents. Within Microchip's hierarchy, PIC18 sits under: 8-bit PIC MCU -> PIC18 -> PIC18F/LF66K/67K/86K/87K -> PIC18LF8628.
Key features of the PIC18LF8628 include 96 KB self-programmable Flash with block-erase support, 4 KB SRAM, 1024-byte non-volatile Data EEPROM for parameter storage, a 12-bit A/D converter with up to 16 input channels, multiple capture/compare/PWM modules, two MSSP ports for SPI or I2C, two USART modules with LIN support, an enhanced CCP, an LCD segment driver interface option in related parts, and nanoWatt XLP sleep modes drawing microamp-level standby current. The wide operating voltage (2.0-3.6V) and 70+ I/O pins simplify interface to large human-machine or sensor arrays.
Internally, the PIC18LF8628 uses an enhanced Harvard architecture with separate program and data buses plus a 16-bit instruction word. An 8x8 hardware multiplier and 16-bit barrel-style instruction pipeline accelerate C-compiled code relative to baseline PIC16 devices. Internal oscillator blocks and the PLL allow flexible clocking from a 32 kHz secondary source up to 40 MHz, while the XLP power-management unit gates peripherals individually for deep-sleep operation.
Typical applications include industrial automation controllers, HVAC and building-management panels, large-format user-interface and keypad/display nodes, automotive accessory modules, point-of-sale terminals, sensor-fusion aggregators, and any battery-backed instrumentation requiring non-volatile parameter retention (Data EEPROM) alongside substantial program memory.
When designing with the PIC18LF8628, prioritize decoupling per the Microchip PIC18F8723/8628 family datasheet and budget for in-circuit serial programming (ICSP) header pins. The Data EEPROM endurance is rated for 100k erase/write cycles - exceed only with wear-leveling in firmware.
This page combines verified distributor pricing (as of 2026-09-29), drop-in same-family alternatives, and practical design notes not consolidated in the manufacturer datasheet PDF.
直接替换替代料： PIC18LF8628-I/PT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18LF8628-I/PT （相同外形与封装尺寸） ——差异在于 ADC, I/O Pins, Package, Program Memory (Flash), Core Architecture.
快速对比工具——选择替代料号进行并排对比：
PIC18LF8723-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18LF6680-I/PT
✅ 直接替换✓ 有现货
$12.85 / 个
查看数据手册 →PIC18LF8527-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18LF4585-I/PT
✅ 直接替换✓ 有现货
$6.34 / 个
查看数据手册 →PIC18LF8628-I/PT 最大额定值与电气特性
| Program Memory (Flash) | 96 KB |
| Data SRAM | 4 KB |
| Data EEPROM | 1024 bytes |
| CPU Core | PIC18 (8-bit enhanced Harvard) |
| Maximum CPU Clock | 40 MHz |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| ADC | 12-bit, multi-channel |
| I/O Pins | 70+ (depends on peripheral allocation) |
| 封装 | TQFP-80 (PT), 12x12 mm |
| Temperature Grade | Industrial (-40C to +85C) |
| Serial Interfaces | 2x USART (LIN-capable), 2x MSSP (SPI/I2C) |
| Timers | Multiple 8/16-bit timers with gate control |
| CCP/ECCP Modules | Yes (Capture/Compare/PWM, Enhanced CCP) |
| Parallel Slave Port | Yes |
| Low-Power Feature | nanoWatt XLP technology |
| In-Circuit Programming | ICSP via 2-wire PGC/PGD |
| RoHS 状态 | Compliant |
PIC18LF8628-I/PT 引脚配置
| 引脚 1 | OSC1/CLKI/RA7 — Oscillator input / external clock / GPIO port A bit 7 |
| 引脚 2 | OSC2/CLKO/RA6 — Oscillator output / GPIO port A bit 6 |
| 引脚 3 | RA0/AN0 — GPIO port A bit 0 / ADC input 0 |
| 引脚 4 | RA1/AN1 — GPIO port A bit 1 / ADC input 1 |
| 引脚 5 | RA2/AN2/VREF- — GPIO port A bit 2 / ADC input 2 / ADC negative reference |
| 引脚 6 | RA3/AN3/VREF+ — GPIO port A bit 3 / ADC input 3 / ADC positive reference |
| 引脚 7 | RA4/T0CKI — GPIO port A bit 4 / Timer0 clock input |
| 引脚 8 | RA5/AN4 — GPIO port A bit 5 / ADC input 4 |
| 引脚 9 | RE0/RD — GPIO port E bit 0 / Parallel Slave Port read strobe |
| 引脚 10 | RE1/WR — GPIO port E bit 1 / Parallel Slave Port write strobe |
| 引脚 11 | RE2/CS — GPIO port E bit 2 / Parallel Slave Port chip select |
| 引脚 12 | VDD — Positive supply voltage (2.0-3.6V) |
| 引脚 13 | VSS — Ground reference |
| 引脚 14 | RB0/INT0/FLT0 — GPIO port B bit 0 / External interrupt 0 / PWM fault input |
| 引脚 15 | RB1/INT1 — GPIO port B bit 1 / External interrupt 1 |
| 引脚 16 | RB2/INT2 — GPIO port B bit 2 / External interrupt 2 |
| 引脚 17 | RB3/INT3 — GPIO port B bit 3 / External interrupt 3 |
| 引脚 18 | RB4/KBI0 — GPIO port B bit 4 / Keyboard interrupt 0 |
| 引脚 19 | RB5/KBI1 — GPIO port B bit 5 / Keyboard interrupt 1 |
| 引脚 20 | RB6/KBI2/PGC — GPIO port B bit 6 / Keyboard interrupt 2 / ICSP clock |
| 引脚 21 | RB7/KBI3/PGD — GPIO port B bit 7 / Keyboard interrupt 3 / ICSP data |
| 引脚 22 | RC0/T1OSO/T1CKI — GPIO port C bit 0 / Timer1 oscillator output / Timer1 clock |
| 引脚 23 | RC1/T1OSI/CCP2 — GPIO port C bit 1 / Timer1 oscillator input / CCP2 |
| 引脚 24 | RC2/CCP1 — GPIO port C bit 2 / CCP1 output |
| 引脚 25 | RC3/SCK1/SCL1 — GPIO port C bit 3 / MSSP1 SPI clock / I2C clock |
| 引脚 26 | RC4/SDI1/SDA1 — GPIO port C bit 4 / MSSP1 SPI data in / I2C data |
| 引脚 27 | RC5/SDO1 — GPIO port C bit 5 / MSSP1 SPI data out |
| 引脚 28 | RC6/TX1/CK1 — GPIO port C bit 6 / USART1 TX / USART1 clock |
| 引脚 29 | RC7/RX1/DT1 — GPIO port C bit 7 / USART1 RX / USART1 data |
| 引脚 30 | RD0/PSP0 — GPIO port D bit 0 / Parallel Slave Port data bit 0 |
| 引脚 31 | RD1/PSP1 — GPIO port D bit 1 / Parallel Slave Port data bit 1 |
| 引脚 32 | RD2/PSP2 — GPIO port D bit 2 / Parallel Slave Port data bit 2 |
| 引脚 33 | RD3/PSP3 — GPIO port D bit 3 / Parallel Slave Port data bit 3 |
| 引脚 34 | RD4/PSP4 — GPIO port D bit 4 / Parallel Slave Port data bit 4 |
| 引脚 35 | RD5/PSP5 — GPIO port D bit 5 / Parallel Slave Port data bit 5 |
| 引脚 36 | RD6/PSP6 — GPIO port D bit 6 / Parallel Slave Port data bit 6 |
| 引脚 37 | RD7/PSP7 — GPIO port D bit 7 / Parallel Slave Port data bit 7 |
| 引脚 38 | VSS — Ground reference |
| 引脚 39 | VDD — Positive supply voltage (2.0-3.6V) |
| 引脚 40 | RF0/AN5 — GPIO port F bit 0 / ADC input 5 |
| 引脚 41 | RF1/AN6 — GPIO port F bit 1 / ADC input 6 |
| 引脚 42 | RF2/AN7 — GPIO port F bit 2 / ADC input 7 |
| 引脚 43 | RF3/AN8 — GPIO port F bit 3 / ADC input 8 |
| 引脚 44 | RF4/AN9 — GPIO port F bit 4 / ADC input 9 |
| 引脚 45 | RF5/AN10/CVREF — GPIO port F bit 5 / ADC input 10 / comparator voltage reference |
| 引脚 46 | RF6/AN11 — GPIO port F bit 6 / ADC input 11 |
| 引脚 47 | RF7/AN12/SS1 — GPIO port F bit 7 / ADC input 12 / MSSP1 SPI slave select |
| 引脚 48 | RG0 — GPIO port G bit 0 |
| 引脚 49 | RG1 — GPIO port G bit 1 |
| 引脚 50 | RG2 — GPIO port G bit 2 |
| 引脚 51 | RG3 — GPIO port G bit 3 |
| 引脚 52 | RG4 — GPIO port G bit 4 |
| 引脚 53 | MCLR/VPP — Master clear reset / programming voltage input |
| 引脚 54 | RH0 — GPIO port H bit 0 |
| 引脚 55 | RH1 — GPIO port H bit 1 |
| 引脚 56 | RH2 — GPIO port H bit 2 |
| 引脚 57 | RH3 — GPIO port H bit 3 |
| 引脚 58 | RH4 — GPIO port H bit 4 |
| 引脚 59 | RH5 — GPIO port H bit 5 |
| 引脚 60 | RH6 — GPIO port H bit 6 |
| 引脚 61 | RH7 — GPIO port H bit 7 |
| 引脚 62 | RJ0 — GPIO port J bit 0 |
| 引脚 63 | RJ1 — GPIO port J bit 1 |
| 引脚 64 | RJ2 — GPIO port J bit 2 |
| 引脚 65 | RJ3 — GPIO port J bit 3 |
| 引脚 66 | RJ4 — GPIO port J bit 4 |
| 引脚 67 | RJ5 — GPIO port J bit 5 |
| 引脚 68 | RJ6 — GPIO port J bit 6 |
| 引脚 69 | RJ7 — GPIO port J bit 7 |
| 引脚 70 | RK0 — GPIO port K bit 0 |
| 引脚 71 | RK1 — GPIO port K bit 1 |
| 引脚 72 | RK2 — GPIO port K bit 2 |
| 引脚 73 | RK3 — GPIO port K bit 3 |
| 引脚 74 | RK4 — GPIO port K bit 4 |
| 引脚 75 | RK5 — GPIO port K bit 5 |
| 引脚 76 | RK6 — GPIO port K bit 6 |
| 引脚 77 | RK7 — GPIO port K bit 7 |
| 引脚 78 | VSS — Ground reference |
| 引脚 79 | VDD — Positive supply voltage (2.0-3.6V) |
| 引脚 80 | AVDD — Analog supply voltage (tie to VDD) |
典型应用
PIC18LF8628-I/PT 适用于 7 应用s: Industrial Automation Controller, HVAC Building-Management Panel, Large-Format User-Interface / Keypad Display, Automotive Accessory Module, Point-of-Sale Terminal, Battery-Backed Sensor Aggregator, Smart Home IoT Bridge Node.
Industrial Automation Controller
The PIC18LF8628-I/PT fits industrial automation controllers with its 96 KB Flash for state-machine logic, 4 KB RAM for data buffering, and 70+ I/O pins for sensor-actuator fan-out. The 12-bit ADC handles analog transducer inputs while two USART modules support RS-232/485 Modbus links. The LF 2.0-3.6V supply simplifies 24V-to-3.3V regulator designs common in factory PLC racks.
推荐
HVAC Building-Management Panel
The PIC18LF8628-I/PT serves HVAC panels because its 96 KB Flash accommodates multi-zone scheduling tables, 1024-byte Data EEPROM retains setpoints across power cycles without external EEPROM, and nanoWatt XLP sleep keeps standby current under 1 uA on battery backup. Multiple CCP modules drive TRIAC phase-angle control for damper actuators and the 12-bit ADC reads thermistor/resistive sensor bridges with 0.1 C resolution.
推荐
Large-Format User-Interface / Keypad Display
The PIC18LF8628-I/PT drives large keypads and character/graphic displays thanks to its 70+ I/O count, parallel slave port for off-loading display refresh to a host controller, and 4 KB RAM for buffer memory. The MSSP/SPI modules support direct drive of OLED/ST7565 LCD controllers while the 12-bit ADC reads potentiometer/touch sliders. The TQFP-80 footprint gives PCB designers ample GPIO without external I/O expanders.
推荐
Automotive Accessory Module
The PIC18LF8628-I/PT works in non-safety automotive accessories (interior lighting controllers, seat-heater panels, dash-top displays) using its LIN-capable USART, PWM modules for LED dimming, and wide -40C to +85C industrial temperature grade. Note that for AEC-Q100 automotive-grade certification, designers should pick the PIC18F8628-I/PT automotive variant instead, since the LF8628-I/PT is industrial-grade only.
推荐
Point-of-Sale Terminal
The PIC18LF8628-I/PT is well-suited to point-of-sale (POS) terminals as the keypad/scanner I/O controller because 96 KB Flash handles multi-protocol command parsers, 4 KB RAM buffers encrypted packets, and 1024-byte Data EEPROM retains merchant-config tables. The 12-bit ADC reads battery telemetry and two USARTs connect to printer and Ethernet modules; nanoWatt XLP keeps backup battery drain minimal.
推荐
Battery-Backed Sensor Aggregator
The PIC18LF8628-I/PT functions as a battery-backed sensor aggregator where the LF variant's nanoWatt XLP sleep modes drop current to microamp levels between sensor reads, 1024-byte Data EEPROM logs calibration constants across battery swaps, and 4 KB RAM aggregates raw sensor data before transmission via USART or MSSP. The wide 2.0-3.6V VDD lets it run from a single 3.6V lithium primary cell without a boost regulator.
推荐
Smart Home IoT Bridge Node
The PIC18LF8628-I/PT serves as a smart-home bridge node because its dual USART (LIN-capable) and dual MSSP (SPI/I2C) handle simultaneous sensor and radio links, 96 KB Flash implements Zigbee/Z-Wave/BLE command stacks, and the 12-bit ADC reads analog sensor inputs (lux, gas, thermistor). The TQFP-80 footprint provides enough GPIO to fan out to multiple radio modules plus a TFT display for local status.
推荐
推荐产品汇总
工程参考数据： PIC18LF8628-I/PT ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC18LF8723-I/PT | PIC18LF6680-I/PT | PIC18LF8527-I/PT | PIC18LF4585-I/PT |
|---|---|---|---|---|---|
| Package | TQFP-80 (PT) | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 96 KB | 128 KB (+33%) | 80 KB (-17%) | 48 KB (-50%) | 48 KB (-50%) |
| RAM | 4 KB | 8 KB (+100%) | 2 KB (-50%) | 4 KB (same) | 4 KB (same) |
| Operating Voltage | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V |
| Max Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| ADC | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
| Data EEPROM | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes |
| nanoWatt XLP | Yes | Yes | Yes | Yes | Yes |
关键差异点
- Lowest-voltage LF variant in 80-pin TQFP family （对比 PIC18F8628-I/PT)
- Larger Flash and RAM than PIC18LF6680-I/PT sibling （对比 PIC18LF6680-I/PT)
- Smaller Flash than PIC18LF8723-I/PT but same TQFP-80 footprint （对比 PIC18LF8723-I/PT)
设计说明
Estimated: at 40 MHz with VDD=3.3V and all peripherals active, typical IDD is approximately 15-20 mA per the PIC18F6x2/8x2 family datasheet. For battery applications, place the MCU in Sleep mode (IDD ~0.1-1 uA with nanoWatt XLP) between sensor reads and use Timer1 with a 32.768 kHz crystal as the wake source. Decouple each VDD/VSS pair with a 100 nF ceramic capacitor within 5 mm of the pin; bulk capacitance of 10 uF is recommended near the regulator output.
Route the ICSP lines PGC (RB6) and PGD (RB7) with short, parallel traces and a 4.7 kohm pull-up on MCLR/VPP to ensure reliable in-circuit programming. Place the 32.768 kHz low-frequency oscillator crystal within 5 mm of OSC1/OSC2 with guard ring to ground. The analog AVSS/AVDD pair should be star-routed back to a clean reference point and decoupled separately from digital VDD.
Configuration bits must be set correctly: enable the internal oscillator only if external clocking is not used, and disable the watchdog timer if not required by application logic (or enable WDT with a long postscaler). Forgetting to set CONFIG3L's voltage regulator configuration can cause intermittent brown-out reset behavior. Always include a 4.7 kohm pull-up on MCLR and a series resistor on PGD/PGC to limit inrush current during ICSP. Data EEPROM write endurance is rated for 100,000 erase/write cycles - implement firmware wear-leveling for parameter logs.
合规信息
RoHS and lead-free compliant per Microchip product page; conflict minerals statement filed November 2018 per package change PCN. Industrial temperature grade only - not AEC-Q100 qualified.