PIC18LF6628T-I/PT - 96KB Flash 8-bit MCU, TQFP-64 | Microchip
MPN: PIC18LF6628T-I/PT ✓ Hoạt độngPIC18LF6628T-I/PT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF6628T-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18LF6628T-I/PT (cùng hình factor và footprint) — khác nhau ở Core Architecture, Package, Program Memory (Flash), Timers, Operating Temperature.
PIC18LF6627T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF6585T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF6525T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF6520T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF4685T-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF6628T-I/PT Tỷ lệ tối đa & tính chất điện
| 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 |
| Hộp | 64-pin TQFP (PT) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -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) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18LF6628T-I/PT
| Chân 1 | NC — Not connected (per datasheet) |
| Chân 2 | NC — Not connected (per datasheet) |
| Chân 3 | NC — Not connected (per datasheet) |
| Chân 4 | NC — Not connected (per datasheet) |
| Chân 5 | NC — Not connected (per datasheet) |
| Chân 6 | NC — Not connected (per datasheet) |
| Chân 7 | OSC1 — Oscillator input |
| Chân 8 | OSC2 — Oscillator output |
| Chân 9 | MCLR — Master Clear (reset, active low) |
| Chân 10 | VSS — Ground reference |
| Chân 11 | VDD — Positive supply voltage |
| Chân 12 | RB0/INT0 — I/O port B bit 0 / external interrupt 0 |
| Chân 13 | RB1/INT1 — I/O port B bit 1 / external interrupt 1 |
| Chân 14 | RB2/INT2 — I/O port B bit 2 / external interrupt 2 |
| Chân 15 | RB3/INT3 — I/O port B bit 3 / external interrupt 3 |
| Chân 16 | RB4 — I/O port B bit 4 |
| Chân 17 | RB5 — I/O port B bit 5 |
| Chân 18 | RB6/PGC — I/O port B bit 6 / ICSP clock |
| Chân 19 | RB7/PGD — I/O port B bit 7 / ICSP data |
| Chân 20 | VSS — Ground reference |
| Chân 21 | VDD — Positive supply voltage |
| Chân 22 | RC0 — I/O port C bit 0 |
| Chân 23 | RC1 — I/O port C bit 1 |
| Chân 24 | RC2/CCP1 — I/O port C bit 2 / CCP1 output |
| Chân 25 | RC3 — I/O port C bit 3 |
| Chân 26 | RC4 — I/O port C bit 4 |
| Chân 27 | RC5 — I/O port C bit 5 |
| Chân 28 | RC6/TX — I/O port C bit 6 / USART TX |
| Chân 29 | RC7/RX — I/O port C bit 7 / USART RX |
| Chân 30 | VSS — Ground reference |
| Chân 31 | VDD — Positive supply voltage |
| Chân 32 | RD0 — I/O port D bit 0 |
| Chân 33 | RD1 — I/O port D bit 1 |
| Chân 34 | RD2 — I/O port D bit 2 |
| Chân 35 | RD3 — I/O port D bit 3 |
| Chân 36 | RD4 — I/O port D bit 4 |
| Chân 37 | RD5 — I/O port D bit 5 |
| Chân 38 | RD6 — I/O port D bit 6 |
| Chân 39 | RD7 — I/O port D bit 7 |
| Chân 40 | VSS — Ground reference |
| Chân 41 | VDD — Positive supply voltage |
| Chân 42 | RE0 — I/O port E bit 0 |
| Chân 43 | RE1 — I/O port E bit 1 |
| Chân 44 | RE2 — I/O port E bit 2 |
| Chân 45 | RE3 — I/O port E bit 3 |
| Chân 46 | RE4 — I/O port E bit 4 |
| Chân 47 | RE5 — I/O port E bit 5 |
| Chân 48 | RE6 — I/O port E bit 6 |
| Chân 49 | RE7 — I/O port E bit 7 |
| Chân 50 | VSS — Ground reference |
| Chân 51 | VDD — Positive supply voltage |
| Chân 52 | RF0 — I/O port F bit 0 |
| Chân 53 | RF1 — I/O port F bit 1 |
| Chân 54 | RF2 — I/O port F bit 2 |
| Chân 55 | RF3 — I/O port F bit 3 |
| Chân 56 | RF4 — I/O port F bit 4 |
| Chân 57 | RF5 — I/O port F bit 5 |
| Chân 58 | RF6 — I/O port F bit 6 |
| Chân 59 | RF7 — I/O port F bit 7 |
| Chân 60 | VSS — Ground reference |
| Chân 61 | VDD — Positive supply voltage |
| Chân 62 | RG0 — I/O port G bit 0 |
| Chân 63 | RG1 — I/O port G bit 1 |
| Chân 64 | RG2 — I/O port G bit 2 |
Ứng dụng tiêu biểu
PIC18LF6628T-I/PT phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF6628T-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- 96 KB Flash with Data EEPROM and 4 KB SRAM (vsPIC18LF6585T-I/PT)
- 12-bit ADC with 12 channels integrated (vsPIC18LF6520T-I/PT)
- Wide LF voltage range (2.5 V to 5.5 V) (vsPIC18F6628T-I/PT)
Ghi chú thiết kế
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.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C. AEC-Q100 not qualified - select PIC18LF46K80 or similar for automotive.
