PIC18F8520T-E/PT - 25MHz 8-bit MCU 32KB Flash 80-TQFP | Microchip
料号： PIC18F8520T-E/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.62 | $8.62 |
| 10 | $7.74 | $77.40 |
| 100 | $6.91 | $691.00 |
| 500 | $6.18 | $3,090.00 |
| 1,000 | $5.52 | $5,520.00 |
PIC18F8520T-E/PT 概述
An 8-bit microcontroller (MCU) is a self-contained programmable processor that integrates CPU, non-volatile program memory, volatile data RAM, and peripheral subsystems (timers, ADC, communication ports, I/O) onto a single silicon die. PIC18F-series MCUs use an enhanced Harvard RISC architecture with a 16-bit instruction word and 8-bit data path, achieving up to 10 MIPS at 40 MHz while retaining upward source compatibility with PIC16/PIC17 devices.
Key features of the PIC18F8520 include a second USART/serial port beyond the PIC18F452 baseline, multiple capture/compare/PWM modules, an on-chip 10-bit ADC, and code-protection fuses for secure firmware. The 70 I/O pins support extensive parallel expansion, making the device suitable for human-machine-interface panels, instrumentation, and motor-control front-ends. The flash program memory supports in-circuit serial programming (ICSP) and in-application reprogramming.
Architecturally the PIC18F8520 separates code (16-bit wide flash) and data (8-bit SRAM) buses for predictable real-time response. Power-management features include multiple oscillator modes (HS, XT, LP, RC), a power-on reset, brown-out reset, watchdog timer with separate on-chip oscillator, and an ultra-low-power SLEEP mode drawing microampere-level current.
Typical applications span industrial control panels, automotive instrument clusters, white-goods user interfaces, and embedded sensor hubs that require >64 I/O equivalents. Compared with smaller-package PIC18F variants, the 80-TQFP version exposes additional ports for character-LCD bus, keypad matrix, and analog front-end connectivity.
When designing with this device, ensure the supply rail sits between 4.2 V and 5.5 V and reserve a pair of pins for ICSP clock/data to maintain field-reprogramming capability. The 'E' temperature grade makes the part suitable for under-hood automotive or outdoor industrial enclosures where commercial-grade parts would drift outside spec.
This page synthesizes XAIPART distributor pricing, Microchip same-family drop-in alternatives, pin-compatibility analysis, and design guidance not aggregated on a single distributor product page.
直接替换替代料： PIC18F8520T-E/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： PIC18F8520T-E/PT （相同外形与封装尺寸） ——差异在于 Package, Core Architecture, Operating Temperature, Timers, ADC.
快速对比工具——选择替代料号进行并排对比：
PIC18F8520-I/PT
✅ 直接替换✓ 有现货
$5.1586 / 个
查看数据手册 →PIC18F8520-E/PT
✅ 直接替换✓ 有现货
$7.84 / 个
查看数据手册 →PIC18F8520T-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F8520T-I/PTG
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F6520-I/PT
✅ 直接替换✓ 有现货
$6.1 / 个
查看数据手册 →PIC18F8520T-E/PT 最大额定值与电气特性
| Core Architecture | PIC18F, 8-bit enhanced Harvard RISC |
| Instruction Set Width | 16-bit |
| 数据总线宽度 | 8-bit (data), 16-bit (instruction) |
| Maximum Clock Speed | 40 MHz (10 MIPS); 25 MHz specified at 5 V per distributor listings |
| Program Memory (Flash) | 32 KB (16K x 16) |
| Data RAM | 2 KB |
| I/O Ports | 70 |
| Supply Voltage (Vdd) | 4.2 V to 5.5 V |
| 工作温度 | -40 °C to +125 °C (extended 'E' grade) |
| 封装 | 80-pin TQFP (PT), 12x12 mm, 1 mm height |
| 安装类型 | Surface Mount |
| ADC | 10-bit, multi-channel (on-chip) |
| Communication Peripherals | 2x USART/SCI, I2C, SPI |
| Timers / CCP | Multiple 8/16-bit timers, capture/compare/PWM modules |
| Programming Method | ICSP (In-Circuit Serial Programming), in-application reprogramming |
| ROM Type | Flash |
| Life Cycle Stage | Active |
| Packaging Format | Tape and Reel ('T' suffix) |
PIC18F8520T-E/PT 引脚配置
| 引脚 1 | OSC1/CLKI/RA7 — Oscillator input / external clock / PORTA bit 7 |
| 引脚 2 | OSC2/CLKO/RA6 — Oscillator output / PORTA bit 6 |
| 引脚 3 | MCLR — Master clear (reset) input |
| 引脚 4 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| 引脚 5 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| 引脚 6 | RA2/AN2/Vref- — PORTA bit 2 / analog input 2 / ADC Vref- |
| 引脚 7 | RA3/AN3/Vref+ — PORTA bit 3 / analog input 3 / ADC Vref+ |
| 引脚 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| 引脚 9 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| 引脚 10 | Vss — Ground reference |
| 引脚 11 | VDD — Positive supply (4.2 V to 5.5 V) |
| 引脚 12 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| 引脚 13 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| 引脚 14 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| 引脚 15 | RB3/INT3/CCP2 — PORTB bit 3 / external interrupt 3 / CCP2 |
| 引脚 16 | RB4 — PORTB bit 4 (interrupt-on-change) |
| 引脚 17 | RB5 — PORTB bit 5 (interrupt-on-change) |
| 引脚 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| 引脚 19 | RB7/PGD — PORTB bit 7 / ICSP data |
| 引脚 20 | Vss — Ground reference |
| 引脚 21 | VDD — Positive supply |
| 引脚 22 | RC0/T1OSO/T13CKI — PORTC bit 0 / Timer1 oscillator output / Timer1/Timer3 clock input |
| 引脚 23 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| 引脚 24 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| 引脚 25 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| 引脚 26 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| 引脚 27 | RC5/SDO — PORTC bit 5 / SPI data out |
| 引脚 28 | RC6/TX1/CK1 — PORTC bit 6 / USART1 transmit / USART1 clock |
| 引脚 29 | RC7/RX1/DT1 — PORTC bit 7 / USART1 receive / USART1 data |
| 引脚 30 | Vss — Ground reference |
| 引脚 31 | VDD — Positive supply |
| 引脚 32 | RD0 — PORTD bit 0 |
| 引脚 33 | RD1 — PORTD bit 1 |
| 引脚 34 | RD2 — PORTD bit 2 |
| 引脚 35 | RD3 — PORTD bit 3 |
| 引脚 36 | RD4 — PORTD bit 4 |
| 引脚 37 | RD5 — PORTD bit 5 |
| 引脚 38 | RD6 — PORTD bit 6 |
| 引脚 39 | RD7 — PORTD bit 7 |
| 引脚 40 | Vss — Ground reference |
| 引脚 41 | VDD — Positive supply |
| 引脚 42 | RE0/RD/AN5 — PORTE bit 0 / read strobe for parallel slave port / analog input 5 |
| 引脚 43 | RE1/WR/AN6 — PORTE bit 1 / write strobe for PSP / analog input 6 |
| 引脚 44 | RE2/CS/AN7 — PORTE bit 2 / chip select for PSP / analog input 7 |
| 引脚 45 | Vss — Ground reference |
| 引脚 46 | VDD — Positive supply |
| 引脚 47 | RF0/AN8 — PORTF bit 0 / analog input 8 |
| 引脚 48 | RF1/AN9/C2OUT — PORTF bit 1 / analog input 9 / comparator 2 output |
| 引脚 49 | RF2/AN10/C1OUT — PORTF bit 2 / analog input 10 / comparator 1 output |
| 引脚 50 | RF3/AN11 — PORTF bit 3 / analog input 11 |
| 引脚 51 | RF4/AN12 — PORTF bit 4 / analog input 12 |
| 引脚 52 | RF5/AN13 — PORTF bit 5 / analog input 13 |
| 引脚 53 | RF6/AN14 — PORTF bit 6 / analog input 14 |
| 引脚 54 | RF7/AN15 — PORTF bit 7 / analog input 15 |
| 引脚 55 | Vss — Ground reference |
| 引脚 56 | VDD — Positive supply |
| 引脚 57 | RG0 — PORTG bit 0 |
| 引脚 58 | RG1 — PORTG bit 1 |
| 引脚 59 | RG2 — PORTG bit 2 |
| 引脚 60 | RG3 — PORTG bit 3 |
| 引脚 61 | RG4 — PORTG bit 4 |
| 引脚 62 | RG5 — PORTG bit 5 |
| 引脚 63 | RG6 — PORTG bit 6 |
| 引脚 64 | RG7 — PORTG bit 7 |
| 引脚 65 | Vss — Ground reference |
| 引脚 66 | VDD — Positive supply |
| 引脚 67 | RH0/A16 — PORTH bit 0 / external memory address bit 16 |
| 引脚 68 | RH1/A17 — PORTH bit 1 / external memory address bit 17 |
| 引脚 69 | RH2/A18 — PORTH bit 2 / external memory address bit 18 |
| 引脚 70 | RH3/A19 — PORTH bit 3 / external memory address bit 19 |
| 引脚 71 | Vss — Ground reference |
| 引脚 72 | VDD — Positive supply |
| 引脚 73 | RJ0 — PORTJ bit 0 |
| 引脚 74 | RJ1 — PORTJ bit 1 |
| 引脚 75 | RJ2 — PORTJ bit 2 |
| 引脚 76 | RJ3 — PORTJ bit 3 |
| 引脚 77 | RJ4 — PORTJ bit 4 |
| 引脚 78 | RJ5 — PORTJ bit 5 |
| 引脚 79 | RJ6 — PORTJ bit 6 |
| 引脚 80 | RJ7 — PORTJ bit 7 |
典型应用
PIC18F8520T-E/PT 适用于 6 应用s: Industrial Control Panels, Automotive Instrument Clusters, White-Goods User Interfaces, Embedded Sensor Hubs, Motor Control Front-Ends, Point-of-Sale Terminal Peripherals.
Industrial Control Panels
The PIC18F8520T-E/PT's 70 general-purpose I/O pins and dual USART peripherals directly drive multi-row keypads, character LCD buses (4-bit or 8-bit), and RS-485/RS-232 control networks common in industrial panel PLCs. Its extended -40C to +125C temperature grade tolerates cabinet interiors near power contactors, while 32 KB flash accommodates full Modbus RTU and ladder-logic firmware. The on-chip 10-bit ADC scans up to 16 analog channels for temperature, pressure, and current sensing without external converters. Compared with smaller PIC18F variants, the 80-TQFP version eliminates external I/O expanders, reducing PCB area and BOM cost in multi-channel controller designs.
推荐
Automotive Instrument Clusters
The PIC18F8520T-E/PT's extended -40C to +125C temperature grade and 70 I/O lines make it well suited for automotive instrument-cluster driver boards that must survive under-hood thermal stress and drive multiple gauge stepper motors, LED bargraphs, and a CAN or LIN gateway. The 10 MIPS core handles real-time speedometer, tachometer, and fuel-level smoothing while leaving headroom for diagnostic routines. The flash memory supports OTA-like firmware refresh via the on-board ICSP interface during end-of-line calibration. Pin-to-pin compatibility with the PIC18F8520-I/PT enables a cost-down variant for non-extreme-temperature clusters.
推荐
White-Goods User Interfaces
Washing machines, dishwashers, and microwave-oven control boards benefit from the PIC18F8520T-E/PT's 70 I/O pins to scan capacitive touch matrices, rotary encoders, and 7-segment or TFT displays without external decoder ICs. Its 32 KB flash is sufficient for state-machine firmware governing wash cycles, door-lock interlocks, and fault-logging EEPROM emulation. The extended temperature rating protects against steam-condensation environments in laundry appliances. Dual USART ports enable simultaneous inverter-bus telemetry and BLE/Wi-Fi module communication for smart-home integration.
推荐
Embedded Sensor Hubs
The PIC18F8520T-E/PT serves as a multi-protocol sensor aggregator in industrial IoT edge nodes, where its 70 I/O lines connect to SPI temperature/pressure sensors, I2C accelerometers, and analog load cells through the on-chip 10-bit ADC. The 10 MIPS core runs deterministic sensor-fusion loops at 1 kHz while serving Modbus queries on USART1 and an SPI-attached LoRa modem on USART2/SPI. In-application reprogramming allows remote firmware updates as sensor calibration evolves. The flash-based architecture simplifies UL/IEC 60730 household appliance safety pre-certification through Microchip's V&V libraries.
推荐
Motor Control Front-Ends
The PIC18F8520T-E/PT's capture/compare/PWM modules generate complementary PWM signals for three-phase brushless DC (BLDC) motor control in fans, pumps, and small drives. With 70 I/O pins the MCU can simultaneously command six PWM channels, read Hall-effect rotor position sensors, monitor DC-link current via the on-chip ADC, and report status over CAN. The 10 MIPS throughput closes the current-control loop in under 20 microseconds at 40 MHz, well within typical 50 microsecond PWM periods. The extended temperature grade supports integration directly on the motor stator housing.
推荐
Point-of-Sale Terminal Peripherals
POS terminals require multiple serial peripherals (magnetic-stripe reader, receipt printer, customer display, fiscal printer) plus a keypad, character LCD, and Ethernet module. The PIC18F8520T-E/PT's dual USART plus hardware SPI/I2C peripheral set covers these buses while its 70 I/O pins handle the keypad matrix and LCD bus in parallel. The 32 KB flash stores price-lookup tables, transaction journals, and encrypted firmware using Microchip's AES library. Extended temperature operation supports deployment in outdoor kiosks and refrigerated cabinets.
推荐
推荐产品汇总
工程参考数据： PIC18F8520T-E/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 | PIC18F8520-I/PT | PIC18F8520-E/PT | PIC18F8520T-I/PT | PIC18F8520T-I/PTG | PIC18F6520-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (PT) 12x12 mm | TQFP-80 (PT) 12x12 mm | TQFP-80 (PT) 12x12 mm | TQFP-80 (PT) 12x12 mm | TQFP-80 (PT) 12x12 mm | TQFP-80 (PT) 12x12 mm |
| Core / Architecture | 8-bit PIC18F RISC | 8-bit PIC18F RISC | 8-bit PIC18F RISC | 8-bit PIC18F RISC | 8-bit PIC18F RISC | 8-bit PIC18F RISC |
| Program Memory (Flash) | 32 KB (16K x 16) | 32 KB | 32 KB | 32 KB | 32 KB | 64 KB (32K x 16) - 100% more flash |
| Data RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| I/O Pins | 70 | 70 | 70 | 70 | 70 | 70 |
| Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
| Operating Temperature | -40C to +125C (extended 'E') | -40C to +85C (industrial 'I') | -40C to +125C (extended 'E') | -40C to +85C (industrial 'I') | -40C to +85C (industrial 'I') | -40C to +85C (industrial 'I') |
| Packaging Format | Tape & Reel ('T') | Tray | Tray (no 'T' suffix) | Tape & Reel | Tape & Reel, lead-free | Tray |
关键差异点
- Extended industrial temperature grade -40C to +125C （对比 PIC18F8520T-I/PT)
- Tape-and-reel packaging for high-volume SMT assembly （对比 PIC18F8520-E/PT (tray))
- Native 80-TQFP for high-pin-count parallel interfaces （对比 PIC18F6520-I/PT (same package, 64 KB flash))
设计说明
Place 100 nF decoupling capacitors on every Vdd/Vss pin pair (10 pairs across the TQFP-80) located within 3 mm of each supply pin. Add a bulk 10 uF tantalum and 100 uF electrolytic at the regulator to suppress the inrush of CCP PWM outputs and ADC reference transients. Without these, brown-out resets can trigger under heavy PWM load. According to the PIC18F8520 family datasheet DS39622, Vdd must rise monotonically above 4.2 V within 50 ms for reliable power-on reset behavior.
Route the 40 MHz HS-mode oscillator traces (OSC1/OSC2) symmetrically and within 5 mm of the IC, guarded by a ground ring. Place the crystal case grounded and keep switching signals (PWM, USART) at least 10 mm away to avoid injection of jitter. The analog reference pins (Vref+/Vref-, AN0-AN15) should be isolated by a ground moat when the digital I/O rate exceeds 10 MHz, since the on-chip ADC achieves only 10-bit resolution without careful analog routing.
Do not exceed 5.5 V on any pin; the absolute maximum Vdd rating per the PIC18F8520 datasheet is 7 V, but extended operation above 5.5 V voids the -40C to +125C temperature guarantee. Always configure the BOR (Brown-Out Reset) voltage to 4.0 V via configuration bits to protect against slowly-decaying supplies. Enable the watchdog timer (WDT) for unattended deployments; default-disabled WDTs are a top cause of field-locked industrial panels. Lastly, reserve the RB6/RB7 pins for ICSP - reassigning them to general I/O prevents in-circuit field reprogramming.
合规信息
Lead-free 80-TQFP package; RoHS and REACH compliant per Microchip product environmental statements. Not AEC-Q100 qualified - automotive designs should validate thermal/EMC performance against AEC-Q100 specifications independently. PIC18F8520T-E/PT does not carry automotive PPAP documentation.