PIC18LF8723T-I/PT - 8-bit MCU, 128KB Flash, 40MHz, 80-TQFP | Microchip
MPN: PIC18LF8723T-I/PT ✓ Hoạt độngPIC18LF8723T-I/PT Tóm tắt
What is an 8-bit PIC microcontroller? It is a Harvard-architecture microcontroller based on a Reduced Instruction Set Computer (RISC) core that executes instructions in a single cycle (except for branches), with separate program and data buses that allow simultaneous fetch and access. The PIC18LF8723 belongs to the PIC18F family -> PIC microcontroller family -> 8-bit MCU category -> embedded processors. Compared with 16-bit and 32-bit MCUs, the PIC18 architecture remains attractive for cost-sensitive and deterministic-control applications where a wide peripheral set, mature toolchain (MPLAB X IDE, XC8 compiler), and proven long-term availability outweigh raw computational throughput.
Key features include 128KB self-programmable Flash, 3.84KB of general-purpose SRAM, 1KB of non-volatile EEPROM, a 12-bit ADC with up to 16 channels, two analog comparators, two CCP modules, one Enhanced CCP (ECCP), three USART modules, two MSSP (SPI/I2C) ports, two 8-bit timers and three 16-bit timers, a 16-bit wide data path, an 8x8 hardware multiplier, and an extended instruction set that improves C code efficiency. The PIC18LF8723 also supports parallel slave/enhanced parallel ports for external bus interfacing, making it suitable for systems that must connect to external memory or ASIC peripherals.
Typical applications include industrial automation controllers, automotive body and HMI modules, white-goods and appliance main boards, motor control and inverter front-ends, USB and CAN gateway bridges, LCD graphic displays, and any low-voltage embedded system requiring high pin count and rich peripheral integration. The 80-TQFP package exposes ample I/O for keypad scanning, multiple serial channels, and parallel expansion buses.
Design considerations include placing decoupling capacitors within 5 mm of each VDD/VSS pair, ensuring the internal 31 kHz low-power oscillator or external crystal meets the PLL requirements if high-speed USB or CAN is used, and selecting the LF (low-voltage) variant explicitly when the rail is 3.3V rather than 5V. Industrial users should pair this MCU with proper ESD protection on exposed connectors and route the analog VDD/VSS pair as a separate island. This page combines manufacturer specifications, distributor pricing context, and drop-in replacement candidates not consolidated on any single competitor page.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF8723T-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 PIC18LF8723T-I/PT (cùng hình factor và footprint) — khác nhau ở Operating Temperature, Communication Interfaces, Core Architecture, Package, Timers.
PIC18LF8723-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F8723T-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF8722T-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF8720T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF8720-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF8527T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF8723T-I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC18F, 8-bit Harvard RISC |
| Program Memory (Flash) | 128 KB (64K x 16) |
| Data SRAM | 3.84 KB |
| Data EEPROM | 1 KB |
| Maximum CPU Clock | 40 MHz |
| Operating Voltage (LF variant) | 2.0 V to 5.5 V |
| ADC | 12-bit, up to 16 channels |
| Digital I/O Pins | 70 (approximately) |
| Timers | 2 x 8-bit, 3 x 16-bit |
| Communication Interfaces | 2 MSSP (SPI/I2C), 3 USART (LIN/EUSART), 1 CAN |
| CCP / ECCP Modules | 2 CCP + 1 ECCP |
| Analog Comparators | 2 |
| Hộp | 80-pin TQFP (PT), 12x12 mm |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial, 'I' grade) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 3 (per JEDEC J-STD-020) |
Cấu hình chân PIC18LF8723T-I/PT
| Chân 1 | MCLR — Master Clear (Reset) input, internal pull-up |
| Chân 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Chân 4 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / DAC negative reference |
| Chân 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / DAC positive reference |
| Chân 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 7 | RA5/AN4 — PORTA bit 5 / Analog input 4 |
| Chân 8 | AVDD — Analog supply voltage |
| Chân 9 | AVSS — Analog ground |
| Chân 10 | OSC1/CLKI/RA7 — Crystal input / external clock / PORTA bit 7 |
| Chân 11 | OSC2/CLKO/RA6 — Crystal output / clock output / PORTA bit 6 |
| Chân 12 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 13 | RC1/T1OSI — PORTC bit 1 / Timer1 oscillator input |
| Chân 14 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| Chân 15 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 16 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 17 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 18 | RC6/TX1/CK1 — PORTC bit 6 / USART1 transmit / USART1 clock |
| Chân 19 | RC7/RX1/DT1 — PORTC bit 7 / USART1 receive / USART1 data |
| Chân 20 | VSS — Ground |
| Chân 21 | VDD — Digital supply voltage |
| Chân 22 | RB0/INT0/FLT0 — PORTB bit 0 / External interrupt 0 / ECCP fault input |
| Chân 23 | RB1/INT1 — PORTB bit 1 / External interrupt 1 |
| Chân 24 | RB2/INT2 — PORTB bit 2 / External interrupt 2 |
| Chân 25 | RB3/INT3/ECCP2 — PORTB bit 3 / External interrupt 3 / ECCP2 output |
| Chân 26 | RB4/KBI0 — PORTB bit 4 / Keyboard interrupt 0 |
| Chân 27 | RB5/KBI1 — PORTB bit 5 / Keyboard interrupt 1 |
| Chân 28 | RB6/KBI2/PGC — PORTB bit 6 / Keyboard interrupt 2 / ICSP clock |
| Chân 29 | RB7/KBI3/PGD — PORTB bit 7 / Keyboard interrupt 3 / ICSP data |
| Chân 30 | RD0/PSP0 — PORTD bit 0 / Parallel slave port data bit 0 |
| Chân 31 | RD1/PSP1 — PORTD bit 1 / Parallel slave port data bit 1 |
| Chân 32 | RD2/PSP2 — PORTD bit 2 / Parallel slave port data bit 2 |
| Chân 33 | RD3/PSP3 — PORTD bit 3 / Parallel slave port data bit 3 |
| Chân 34 | RC4/PSP4 — (Note: PORTD alternate numbering - PORTD bit 4 / Parallel slave port data bit 4) |
| Chân 35 | RD5/PSP5 — PORTD bit 5 / Parallel slave port data bit 5 |
| Chân 36 | RD6/PSP6 — PORTD bit 6 / Parallel slave port data bit 6 |
| Chân 37 | RD7/PSP7 — PORTD bit 7 / Parallel slave port data bit 7 |
| Chân 38 | VSS — Ground |
| Chân 39 | VDD — Digital supply voltage |
| Chân 40 | RE0/RD — PORTE bit 0 / Parallel slave port read strobe |
| Chân 41 | RE1/WR — PORTE bit 1 / Parallel slave port write strobe |
| Chân 42 | RE2/CS — PORTE bit 2 / Parallel slave port chip select |
| Chân 43 | RE3 — PORTE bit 3 (digital only) |
| Chân 44 | RE4 — PORTE bit 4 (digital only) |
| Chân 45 | RE5 — PORTE bit 5 (digital only) |
| Chân 46 | RE6 — PORTE bit 6 (digital only) |
| Chân 47 | RE7 — PORTE bit 7 (digital only) |
| Chân 48 | VSS — Ground |
| Chân 49 | VDD — Digital supply voltage |
| Chân 50 | RF0/AN5 — PORTF bit 0 / Analog input 5 |
| Chân 51 | RF1/AN6 — PORTF bit 1 / Analog input 6 |
| Chân 52 | RF2/AN7 — PORTF bit 2 / Analog input 7 |
| Chân 53 | RF3/AN8 — PORTF bit 3 / Analog input 8 |
| Chân 54 | RF4/AN9 — PORTF bit 4 / Analog input 9 |
| Chân 55 | RF5/AN10/C1OUT — PORTF bit 5 / Analog input 10 / Comparator 1 output |
| Chân 56 | RF6/AN11/C2OUT — PORTF bit 6 / Analog input 11 / Comparator 2 output |
| Chân 57 | RF7 — PORTF bit 7 (digital only) |
| Chân 58 | VSS — Ground |
| Chân 59 | VDD — Digital supply voltage |
| Chân 60 | RG0 — PORTG bit 0 |
| Chân 61 | RG1 — PORTG bit 1 |
| Chân 62 | RG2 — PORTG bit 2 |
| Chân 63 | RG3 — PORTG bit 3 |
| Chân 64 | RG4 — PORTG bit 4 |
| Chân 65 | MCLR/VPP — (Note: alternate MCLR/VPP function shared with pin 1 on programming) |
| Chân 66 | VSS — Ground |
| Chân 67 | VDD — Digital supply voltage |
| Chân 68 | RH0 — PORTH bit 0 |
| Chân 69 | RH1 — PORTH bit 1 |
| Chân 70 | RH2 — PORTH bit 2 |
| Chân 71 | RH3 — PORTH bit 3 |
| Chân 72 | RH4 — PORTH bit 4 |
| Chân 73 | RH5 — PORTH bit 5 |
| Chân 74 | RH6 — PORTH bit 6 |
| Chân 75 | RH7 — PORTH bit 7 |
| Chân 76 | VSS — Ground |
| Chân 77 | VDD — Digital supply voltage |
| Chân 78 | RJ0 — PORTJ bit 0 |
| Chân 79 | RJ1 — PORTJ bit 1 |
| Chân 80 | RJ2 — PORTJ bit 2 |
Ứng dụng tiêu biểu
PIC18LF8723T-I/PT phù hợp cho 7 Áp dụngs: Industrial Automation Controller, Automotive Body and HMI Module, Appliance Main Board, CAN Gateway and Protocol Bridge, LCD Graphic Display Controller, Motor Control and Inverter Front-End, USB and Embedded Host Bridge.
Industrial Automation Controller
The PIC18LF8723T-I/PT's 128 KB Flash and 80-pin TQFP make it a strong fit for industrial PLC-style controllers that drive multiple relays, scan keypads, and run deterministic control loops. The 12-bit ADC with up to 16 channels handles 4-20 mA and 0-10V sensor inputs directly, while the three USART modules provide isolated RS-485 links to remote I/O. With the 40 MHz core delivering 10 MIPS, a PID loop and a HMI update can both fit in the same firmware image. Estimated: at 40 MHz CPU and 3.3V VDD, the typical active current stays below 30 mA - acceptable for 24V industrial rails with linear regulation.
Được đề xuất
Automotive Body and HMI Module
The integrated ECAN peripheral, 1 KB EEPROM, and 80-pin TQFP I/O budget make the PIC18LF8723T-I/PT a natural fit for automotive body controllers and HVAC/HMI modules. The 'LF' variant supports 2.0V to 5.5V, which simplifies crank-cold-start survival at the battery rail. The 12-bit ADC handles seat-position, thermistor, and potentiometer inputs with margin, while ECCP drives backlight PWM and CCP drives LED indicators. The 1 KB EEPROM stores configurable trim values across battery disconnect events - useful for last-state restore on body modules.
Được đề xuất
Appliance Main Board
White-goods and appliance main boards - washing machines, dishwashers, induction cooktops, and microwave ovens - benefit from the PIC18LF8723T-I/PT's combination of large Flash for UI state machines, multiple timers for motor PWM, and the 12-bit ADC for current/voltage sensing. The 80-TQFP exposes enough I/O to scan a 4x5 keypad, drive a 7-segment or graphic LCD, and still leave headroom for safety interlocks. The 2.0V-5.5V LF range tolerates rectified mains drops without brown-out resets, which simplifies the power tree. The industrial -40C to +85C grade covers both freezer and oven-side compartments.
Được đề xuất
CAN Gateway and Protocol Bridge
The PIC18LF8723T-I/PT is frequently used as a CAN-to-UART, CAN-to-SPI, or CAN-to-USB gateway because it combines ECAN, three USART, and two MSSP on a single die. The 128 KB Flash holds complete gateway firmware plus a small scripting buffer, while the 3.84 KB SRAM is enough for typical CAN frame queues. The 80-TQFP exposes the parallel slave port for high-throughput bridges to external FIFOs. Industrial-grade -40C to +85C supports under-hood and cabinet-mounted installations. The LF variant's 2.0V low-voltage operation is helpful when the gateway is fed from a battery-backed rail.
Được đề xuất
LCD Graphic Display Controller
Driving a small graphic LCD (128x64 to 320x240) typically needs a controller with both parallel I/O and enough Flash for a framebuffer plus UI library. The PIC18LF8723T-I/PT's 80-pin TQFP exposes a full parallel port plus the Enhanced Parallel Slave Port, allowing direct bus-mode hookup to common LCD controllers like the KS0108 or ST7565R. The 3.84 KB SRAM holds a partial framebuffer for animations, and the 128 KB Flash fits a font table, icon library, and UI state machine. The three timers simplify backlight PWM, refresh-rate tick, and touch sampling.
Được đề xuất
Motor Control and Inverter Front-End
The PIC18LF8723T-I/PT's ECCP module, three 16-bit timers, and 12-bit ADC combination supports sensorless or sensored BLDC and PMSM motor control up to a few hundred watts. The 80-TQFP exposes enough I/O for three-phase gate drivers, DC-bus current sense, BEMF feedback, and fault inputs. The 40 MHz / 10 MIPS core executes a 4 kHz to 20 kHz PWM loop with comfortable margin. The 2.0V-5.5V LF range tolerates DC-bus sags during hard acceleration. Industrial -40C to +85C supports outdoor and under-hood motor applications.
Được đề xuất
USB and Embedded Host Bridge
Although the PIC18LF8723T-I/PT does not include a native USB peripheral, the 80-TQFP I/O, large Flash, and parallel slave port allow pairing with an external USB transceiver such as the MCP2200 or FT232HL to create an embedded host or device bridge. The 128 KB Flash fits USB stack plus application code, and the 3.84 KB SRAM holds CDC/MSD class buffers. The 12-bit ADC handles analog side channels while USB traffic flows through the SPI/UART link. The 2.0V-5.5V LF supply is friendly to battery-powered bridges and dongles.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF8723T-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 | PIC18LF8723-I/PT | PIC18F8723T-I/PT | PIC18LF8722T-I/PT | PIC18LF8720T-I/PT | PIC18LF8527T-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-80 (12x12 mm) | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 128 KB (64K x 16) | 128 KB | 128 KB | 128 KB | 64 KB | 48 KB |
| SRAM | 3.84 KB | 3.84 KB | 3.84 KB | 3.84 KB | 3.84 KB | 2 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Maximum CPU Clock | 40 MHz (10 MIPS) | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating Voltage | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V | 4.2 V to 5.5 V (F) | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| ADC | 12-bit, up to 16 channels | 12-bit, up to 16 channels | 12-bit, up to 16 channels | 12-bit, fewer channels | 12-bit, up to 16 channels | 10-bit |
| CAN | 1 x ECAN | 1 x ECAN | 1 x ECAN | 1 x ECAN | 1 x ECAN | 1 x CAN |
| 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 |
Bảo phân biệt quan trọng
- Pin-compatible tray variant with identical die (vsPIC18LF8723-I/PT)
- Higher Flash than the '20 sibling (vsPIC18LF8720T-I/PT)
- Lower-voltage operation than the 'F' sibling (vsPIC18F8723T-I/PT)
- Higher resolution ADC than older '8527 family (vsPIC18LF8527T-I/PT)
Ghi chú thiết kế
Place a 100 nF ceramic decoupling capacitor within 5 mm of every VDD/VSS pair on the 80-pin TQFP, plus a single bulk 10 uF to 22 uF tantalum or ceramic on the main 3.3V rail. The PIC18LF8723 datasheet specifies eight VDD/VSS pin pairs around the package; missing one creates intermittent reset or ADC noise issues. AVDD/AVSS should be filtered separately with a ferrite bead and 10 uF + 100 nF stack to keep ADC accuracy within +/- 1 LSB.
Estimated: at 40 MHz CPU clock, 3.3V VDD, and typical I/O toggling, the PIC18LF8723T-I/PT draws roughly 25-30 mA active current, dissipating about 80-100 mW in the 80-TQFP. With a typical theta_JA of 50-60 C/W for the 12x12 mm TQFP, this yields a junction temperature rise of only 4-6 C above ambient - well within the -40 C to +85 C industrial range. No external heatsink is required, but ensure PCB copper pour on all VSS pins for thermal spreading.
Route the analog PORF pins (RF0-RF7) away from switching signals such as PWM outputs (CCP/ECCP, PWM timers) and the ECAN bus to minimize ADC coupling. Keep the crystal traces on OSC1/OSC2 short and surround them with a ground guard ring. If the Enhanced Parallel Slave Port is used, group RD0-RD7 plus RE0/RE1/RE2 into a controlled-impedance region and place a series resistor on RE2 (CS) to damp reflections on long parallel cables.
Do not assume the PIC18LF8723T-I/PT and the PIC18F8723T-I/PT are interchangeable: the LF variant operates down to 2.0V while the F variant requires 4.2V minimum. Brown-out will reset the F variant on a 3.3V-only rail. Also note that 80-pin TQFP variants in the PIC18 family share most but not all pin assignments; verify that pin 1 MCLR and the OSC1/OSC2 assignments match your existing PCB before swapping silicon revisions.
Thông tin tuân thủ
RoHS and REACH compliance per Microchip product environmental information. AEC-Q100 not formally qualified for this specific MPN; for automotive designs requiring AEC-Q100, request the automotive-grade version from Microchip. MSL-3 reflow profile per JEDEC J-STD-020.