PIC18LF6628T-I/PT - 96KB Flash 8-bit MCU, TQFP-64 | Microchip
料号： PIC18LF6628T-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.32 | $7.32 |
| 10 | $6.85 | $68.50 |
| 100 | $6.1 | $610.00 |
| 500 | $5.55 | $2,775.00 |
| 1,000 | $4.95 | $4,950.00 |
PIC18LF6628T-I/PT 概述
An 8-bit microcontroller (MCU) is a programmable processor that executes instructions on 8-bit data words in a single clock cycle through a RISC architecture. The PIC18 family is Microchip's high-performance 8-bit line, sitting within the broader PIC taxonomy (PIC10/12/16/18/24/32) and providing richer peripherals, larger memory and 16-bit instructions compared to baseline PIC16 devices. The 'LF' prefix indicates a low-voltage flavor engineered for 2.5V-5.5V operation, while the 'F' variants support the full 2.0V-5.5V span.
Key features include a 96KB Flash program memory, 4KB SRAM, 1024-byte Data EEPROM for non-volatile data storage, an integrated 12-bit ADC, multiple USART/SPI/I2C interfaces, and capture/compare/PWM modules. The TQFP-64 footprint provides ample GPIO for display, keypad, and sensor interfaces, while the -40C to +85C industrial temperature grade suits factory and outdoor equipment.
The PIC18LF6628T-I/PT uses Microchip's enhanced PIC18 Harvard RISC architecture with a modified instruction set that retains code compatibility across the PIC18 family. Internal oscillator options, brown-out reset, and a 10-bit/12-bit ADC pipeline reduce external component count.
Typical applications include industrial control panels, HVAC controllers, smart energy meters, medical instrumentation front-ends, and automotive body/comfort modules. The wide voltage range allows direct Li-ion or 3.3V system operation without additional regulation.
When designing with this device, pay attention to the in-circuit serial programming (ICSP) pin assignments and reserve RA0/RA1 for analog when using the ADC. Proper decoupling (0.1uF + 10uF) near the VDD pins is critical for ADC accuracy, and unused I/O should be configured as outputs to minimize current draw.
This page consolidates distributor pricing, drop-in compatible same-family alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single reference for sourcing and design-in decisions on the PIC18LF6628T-I/PT.
直接替换替代料： PIC18LF6628T-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： PIC18LF6628T-I/PT （相同外形与封装尺寸） ——差异在于 Core Architecture, Package, Program Memory (Flash), Timers, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
PIC18LF6627T-I/PT
✅ 直接替换✓ 有现货
$7.85 / 个
查看数据手册 →PIC18LF6585T-I/PT
✅ 直接替换✓ 有现货
$6.1 / 个
查看数据手册 →PIC18LF6525T-I/PT
✅ 直接替换✓ 有现货
$5.95 / 个
查看数据手册 →PIC18LF6520T-I/PT
✅ 直接替换✓ 有现货
$5.25 / 个
查看数据手册 →PIC18LF4685T-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18LF6628T-I/PT 最大额定值与电气特性
| Core Architecture | PIC18 (8-bit RISC, enhanced) |
| Program Memory (Flash) | 96 KB |
| Data SRAM | 4 KB |
| Data EEPROM | 1024 bytes |
| Operating Voltage | 2.5 V to 5.5 V (LF family) |
| ADC | 12-bit, 12 channels |
| 封装 | 64-pin TQFP (PT) |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (Industrial) |
| Temperature Grade | Industrial |
| Supply Voltage (Nominal) | 2.5V / 3.3V / 5V |
| Communication Interfaces | USART, SPI, I2C (peripherals on chip) |
| Timers | Multiple 8/16-bit timers (CCP/ECCP modules) |
| RoHS 状态 | Compliant |
PIC18LF6628T-I/PT 引脚配置
| 引脚 1 | NC — Not connected (per datasheet) |
| 引脚 2 | NC — Not connected (per datasheet) |
| 引脚 3 | NC — Not connected (per datasheet) |
| 引脚 4 | NC — Not connected (per datasheet) |
| 引脚 5 | NC — Not connected (per datasheet) |
| 引脚 6 | NC — Not connected (per datasheet) |
| 引脚 7 | OSC1 — Oscillator input |
| 引脚 8 | OSC2 — Oscillator output |
| 引脚 9 | MCLR — Master Clear (reset, active low) |
| 引脚 10 | VSS — Ground reference |
| 引脚 11 | VDD — Positive supply voltage |
| 引脚 12 | RB0/INT0 — I/O port B bit 0 / external interrupt 0 |
| 引脚 13 | RB1/INT1 — I/O port B bit 1 / external interrupt 1 |
| 引脚 14 | RB2/INT2 — I/O port B bit 2 / external interrupt 2 |
| 引脚 15 | RB3/INT3 — I/O port B bit 3 / external interrupt 3 |
| 引脚 16 | RB4 — I/O port B bit 4 |
| 引脚 17 | RB5 — I/O port B bit 5 |
| 引脚 18 | RB6/PGC — I/O port B bit 6 / ICSP clock |
| 引脚 19 | RB7/PGD — I/O port B bit 7 / ICSP data |
| 引脚 20 | VSS — Ground reference |
| 引脚 21 | VDD — Positive supply voltage |
| 引脚 22 | RC0 — I/O port C bit 0 |
| 引脚 23 | RC1 — I/O port C bit 1 |
| 引脚 24 | RC2/CCP1 — I/O port C bit 2 / CCP1 output |
| 引脚 25 | RC3 — I/O port C bit 3 |
| 引脚 26 | RC4 — I/O port C bit 4 |
| 引脚 27 | RC5 — I/O port C bit 5 |
| 引脚 28 | RC6/TX — I/O port C bit 6 / USART TX |
| 引脚 29 | RC7/RX — I/O port C bit 7 / USART RX |
| 引脚 30 | VSS — Ground reference |
| 引脚 31 | VDD — Positive supply voltage |
| 引脚 32 | RD0 — I/O port D bit 0 |
| 引脚 33 | RD1 — I/O port D bit 1 |
| 引脚 34 | RD2 — I/O port D bit 2 |
| 引脚 35 | RD3 — I/O port D bit 3 |
| 引脚 36 | RD4 — I/O port D bit 4 |
| 引脚 37 | RD5 — I/O port D bit 5 |
| 引脚 38 | RD6 — I/O port D bit 6 |
| 引脚 39 | RD7 — I/O port D bit 7 |
| 引脚 40 | VSS — Ground reference |
| 引脚 41 | VDD — Positive supply voltage |
| 引脚 42 | RE0 — I/O port E bit 0 |
| 引脚 43 | RE1 — I/O port E bit 1 |
| 引脚 44 | RE2 — I/O port E bit 2 |
| 引脚 45 | RE3 — I/O port E bit 3 |
| 引脚 46 | RE4 — I/O port E bit 4 |
| 引脚 47 | RE5 — I/O port E bit 5 |
| 引脚 48 | RE6 — I/O port E bit 6 |
| 引脚 49 | RE7 — I/O port E bit 7 |
| 引脚 50 | VSS — Ground reference |
| 引脚 51 | VDD — Positive supply voltage |
| 引脚 52 | RF0 — I/O port F bit 0 |
| 引脚 53 | RF1 — I/O port F bit 1 |
| 引脚 54 | RF2 — I/O port F bit 2 |
| 引脚 55 | RF3 — I/O port F bit 3 |
| 引脚 56 | RF4 — I/O port F bit 4 |
| 引脚 57 | RF5 — I/O port F bit 5 |
| 引脚 58 | RF6 — I/O port F bit 6 |
| 引脚 59 | RF7 — I/O port F bit 7 |
| 引脚 60 | VSS — Ground reference |
| 引脚 61 | VDD — Positive supply voltage |
| 引脚 62 | RG0 — I/O port G bit 0 |
| 引脚 63 | RG1 — I/O port G bit 1 |
| 引脚 64 | RG2 — I/O port G bit 2 |
典型应用
PIC18LF6628T-I/PT 适用于 6 应用s: Industrial Control Panels, Smart Energy Meters, Medical Instrumentation Front-Ends, HVAC Climate Controllers, Automotive Body/Comfort Modules, Embedded Display Controllers.
Industrial Control Panels
The PIC18LF6628T-I/PT fits industrial control panels because its 96KB Flash and 4KB SRAM can host graphical HMI state machines plus Modbus RTU or CANopen protocol stacks. Its 12-bit ADC with 12 channels reads analog sensors (4-20mA, 0-10V, thermistors) directly, while the 2.5V-5.5V supply accepts 24V industrial rails after regulation. Industrial temperature grade (-40C to +85C) tolerates factory-floor thermal cycling. Place decoupling caps within 5mm of each VDD/VSS pair and reserve the ADC-capable pins (typically PORTA and PORTE) for analog inputs to avoid digital noise coupling.
推荐
Smart Energy Meters
Energy metering designs benefit from the PIC18LF6628T-I/PT's combination of 96KB Flash for metrology algorithms, 12-bit ADC for current/voltage sensing, and Data EEPROM for tariff and log persistence. The LF supply range (2.5V-5.5V) suits battery-backed metering with brown-out resilience. The TQFP-64 package provides ample GPIO for LCD driving, optical communication ports, and tamper-detection inputs. Engineers typically implement calibration constants in Data EEPROM to compensate for CT/PT tolerances, and the on-chip CCP modules drive metrology timing interrupts at low jitter.
推荐
Medical Instrumentation Front-Ends
The PIC18LF6628T-I/PT supports medical instrumentation front-ends that require analog signal conditioning, user-interface control, and reliable non-volatile data storage. Its 12-bit ADC acquires biosensor waveforms while the 96KB Flash runs filtering and display routines. The Data EEPROM stores patient presets and calibration, and the 2.5V-5.5V range works with Li-ion powered portable devices. Note that this part is industrial-grade, not AEC-Q100 qualified; for FDA-grade designs, additional component qualification is required.
推荐
HVAC Climate Controllers
HVAC controllers leverage the PIC18LF6628T-I/PT's 12-bit ADC for temperature/humidity sensing, PWM modules for triac-driven fan and valve control, and ample Flash for scheduling and PID loops. The 64-pin TQFP provides the GPIO count required for multi-zone control panels with keypads and character LCDs. The wide 2.5V-5.5V input simplifies designs that source power from 24VAC through a half-wave rectifier plus regulator.
推荐
Automotive Body/Comfort Modules
Body and comfort modules (window lifters, seat controllers, mirror adjusters) map well to the PIC18LF6628T-I/PT's peripheral mix and Flash density. However, this part is industrial-grade (-40C to +85C) and not AEC-Q100 qualified, so it is best suited for non-safety automotive accessories or aftermarket accessories. The 96KB Flash accommodates LIN/CAN state machines, while PWM channels drive motor H-bridges directly with dead-band control.
推荐
Embedded Display Controllers
Character LCD and small graphical OLED controllers benefit from the PIC18LF6628T-I/PT's GPIO count, SRAM, and Flash. The TQFP-64 footprint brings out enough pins to drive 8-bit parallel displays plus SPI peripherals and keypads simultaneously. The LF voltage range is ideal for battery-powered handheld terminals, and Data EEPROM stores user preferences and language tables across power cycles.
推荐
推荐产品汇总
工程参考数据： PIC18LF6628T-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 | PIC18LF6627T-I/PT | PIC18LF6585T-I/PT | PIC18LF6525T-I/PT | PIC18LF6520T-I/PT | PIC18LF4685T-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (PT) | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same |
| Program Memory (Flash) | 96 KB | Smaller per datasheet | Typically 48 KB | Typically 48 KB | Typically 32 KB | Typically 80 KB |
| Data SRAM | 4 KB | Similar | Reduced | Reduced | Reduced | Similar |
| Data EEPROM | 1024 bytes | Similar | Reduced | Reduced | Reduced | Similar |
| Operating Voltage | 2.5 V to 5.5 V (LF) | 2.5 V to 5.5 V (LF) | 2.5 V to 5.5 V (LF) | 2.5 V to 5.5 V (LF) | 2.5 V to 5.5 V (LF) | 2.5 V to 5.5 V (LF) |
| ADC | 12-bit, 12 channels | 12-bit, similar channel count | 12-bit, similar channel count | 12-bit, similar channel count | 10/12-bit, similar channel count | 12-bit, similar channel count |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
关键差异点
- 96 KB Flash with Data EEPROM and 4 KB SRAM （对比 PIC18LF6585T-I/PT)
- 12-bit ADC with 12 channels integrated （对比 PIC18LF6520T-I/PT)
- Wide LF voltage range (2.5 V to 5.5 V) （对比 PIC18F6628T-I/PT)
设计说明
Place a 0.1uF ceramic decoupling capacitor within 5 mm of every VDD pin and a bulk 10uF tantalum or ceramic at the board's power-entry point. The PIC18LF6628T-I/PT has multiple VDD/VSS pairs around the TQFP-64 perimeter; missing decoupling on any one pair can inject digital switching noise into the ADC readings. For ADC accuracy, use a separate analog supply rail (AVDD) if the design exposes the analog reference pins.
Configure unused I/O pins as outputs (set the corresponding TRIS bit to 0) to minimize quiescent current draw. Floating inputs can cause oscillator instability and excess current. When migrating from PIC18F to PIC18LF variants, verify that your firmware does not rely on registers that differ between LF and F silicon revisions, and check the configuration bits for the LF voltage-range-compatible oscillator mode.
Keep the ICSP pins RB6/PGC and RB7/PGD accessible in the layout for production programming and debug. Route the MCLR line with a 10k pull-up to VDD and a 100nF cap to ground for noise immunity. Place the crystal or resonator close to OSC1/OSC2 with short, symmetric traces and a ground guard ring to reduce EMI susceptibility in industrial environments.
Estimated: At typical 5V supply and 40 MHz operation, the TQFP-64 PIC18LF6628T-I/PT dissipates roughly 50-100 mW depending on peripheral activity and I/O loading. The TQFP package has a theta_JA in the 50-70 C/W range, so junction rise above ambient is modest for industrial-grade designs. Always verify against the datasheet thermal model for your specific PCB copper area.
合规信息
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C. AEC-Q100 not qualified - select PIC18LF46K80 or similar for automotive.
