PIC16F18875-E/PTVAO - 32MHz 14KB Flash 8-bit MCU | Microchip
料号： PIC16F18875-E/PTVAO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.65 | $265.00 |
| 500 | $2.25 | $1,125.00 |
| 1,000 | $1.95 | $1,950.00 |
PIC16F18875-E/PTVAO 概述
What is an 8-bit PIC microcontroller? An 8-bit PIC microcontroller is a RISC-based embedded processor that processes data in 8-bit chunks. The PIC16 family sits in Microchip's mid-range portfolio, offering a balance of low power, deterministic peripherals, and code density suited to appliance, sensor, IoT, and automotive edge applications. PIC MCUs fall under the broader hierarchy: microcontroller -> embedded MCU -> semiconductor device -> integrated circuit.
Key features include 36 configurable I/O pins, a 12-bit ADC with Computation (ADCC), 10-bit DAC, 5-bit DAC, comparators, 8-bit/16-bit timers, PWM modules, DSMZ, and a 32MHz internal oscillator. Functional-safety features include Hardware Limit Timer (HLT), Windowed Watchdog Timer (WWDT), CRC/SCAN, and Flash Memory Access Partitioning for ISO 26262 system design. The device supports 1.8V to 5.5V operation.
The PIC16F18875 employs a Harvard RISC architecture with a 14-bit instruction word and a modified 8-level hardware stack. ADCC (ADC with Computation) automates averaging, oversampling, and threshold comparisons, offloading signal conditioning tasks typically handled by the CPU. CIPs allow peripheral-to-peripheral operations without core intervention, enabling deterministic low-latency response.
Typical applications include automotive body and lighting controls, IoT edge sensor nodes, home appliances, battery-powered instruments, industrial sensor conditioning, and functional-safety subsystems (ASIL B/C). The combination of XLP, ADCC, and CIPs suits ultra-low-duty-cycle designs.
When designing with this device, ensure VDD decoupling uses 100nF ceramic capacitors placed within 3mm of each power pin, and verify unused I/O pins are configured as outputs low per the datasheet. The ICSP/ICD pins must be accessible for production programming.
This page combines distributor pricing, same-brand drop-in alternatives, AEC-Q100/automotive context, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： PIC16F18875-E/PTVAO ——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： PIC16F18875-E/PTVAO （相同外形与封装尺寸） ——差异在于 Package, ADC, Operating Temperature, Mounting Type, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
PIC16F18875-E/PT
✅ 直接替换✓ 有现货
$1.42 / 个
查看数据手册 →PIC16F18875-I/PTVAO
✅ 直接替换✓ 有现货
$2.74 / 个
查看数据手册 →PIC16F18875T-E/PTVAO
✅ 直接替换📋 参考替代料（不在目录中）
PIC16F18875-E/P
✅ 直接替换✓ 有现货
$1.74 / 个
查看数据手册 →PIC16F18857-I/SSVAO
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.18 / 个
查看数据手册 →PIC16F18856T-E/SSVAO
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.82 / 个
查看数据手册 →PIC16F18855-I/MV
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.22 / 个
查看数据手册 →PIC16F18855-E/SP
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.47 / 个
查看数据手册 →PIC16F18875-E/PTVAO 最大额定值与电气特性
| Architecture | 8-bit PIC16 RISC (14-bit instruction word) |
| Series | PIC16F18875 / PIC XLP 16F |
| Core | PIC16 / 8-bit |
| Maximum CPU Speed | 32 MHz |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB (1024 bytes) |
| Data EEPROM | 256 bytes |
| I/O Pins | 36 |
| 封装 | 44-pin TQFP (PT) 10x10 mm |
| 安装类型 | Surface Mount |
| Operating Voltage | 1.8 V to 5.5 V |
| 工作温度 | -40C to +125C (E = -40C to -125C automotive) |
| AEC-Q100 | Qualified (automotive) |
| Connectivity | I2C, SPI, UART/USART, LIN |
| Peripherals | ADCC, DSM, CRC/SCAN, WWDT, HLT, 10-bit DAC, 5-bit DAC, comparators |
| RoHS 状态 | Compliant |
| Lead-Free | Yes |
PIC16F18875-E/PTVAO 引脚配置
| 引脚 1 | RA0/ICDDAT — Bidirectional I/O / ICSP data |
| 引脚 2 | RA1 — Bidirectional I/O |
| 引脚 3 | RA2 — Bidirectional I/O |
| 引脚 4 | RA3 — Bidirectional I/O |
| 引脚 5 | RA4 — Bidirectional I/O |
| 引脚 6 | RA5 — Bidirectional I/O |
| 引脚 7 | RA6 — Bidirectional I/O |
| 引脚 8 | RA7 — Bidirectional I/O |
| 引脚 9 | VSS — Ground |
| 引脚 10 | VDD — Positive supply (1.8V to 5.5V) |
| 引脚 11 | RB0 — Bidirectional I/O |
| 引脚 12 | RB1 — Bidirectional I/O |
| 引脚 13 | RB2 — Bidirectional I/O |
| 引脚 14 | RB3 — Bidirectional I/O |
| 引脚 15 | RB4 — Bidirectional I/O / ICDCLK |
| 引脚 16 | RB5 — Bidirectional I/O |
| 引脚 17 | RB6 — Bidirectional I/O / PGC |
| 引脚 18 | RB7 — Bidirectional I/O / PGD |
| 引脚 19 | RC0 — Bidirectional I/O |
| 引脚 20 | RC1 — Bidirectional I/O |
| 引脚 21 | RC2 — Bidirectional I/O |
| 引脚 22 | RC3 — Bidirectional I/O |
| 引脚 23 | RC4 — Bidirectional I/O |
| 引脚 24 | RC5 — Bidirectional I/O |
| 引脚 25 | RC6 — Bidirectional I/O |
| 引脚 26 | RC7 — Bidirectional I/O |
| 引脚 27 | VSS — Ground |
| 引脚 28 | VDD — Positive supply |
| 引脚 29 | RD0 — Bidirectional I/O |
| 引脚 30 | RD1 — Bidirectional I/O |
| 引脚 31 | RD2 — Bidirectional I/O |
| 引脚 32 | RD3 — Bidirectional I/O |
| 引脚 33 | RD4 — Bidirectional I/O |
| 引脚 34 | RD5 — Bidirectional I/O |
| 引脚 35 | RD6 — Bidirectional I/O |
| 引脚 36 | RD7 — Bidirectional I/O |
| 引脚 37 | RE0 — Bidirectional I/O |
| 引脚 38 | RE1 — Bidirectional I/O |
| 引脚 39 | RE2 — Bidirectional I/O |
| 引脚 40 | RE3 — Bidirectional I/O |
| 引脚 41 | VSS — Ground |
| 引脚 42 | AVDD — Analog supply (tie to VDD) |
| 引脚 43 | AVSS — Analog ground (tie to VSS) |
| 引脚 44 | VDD — Positive supply |
典型应用
PIC16F18875-E/PTVAO 适用于 7 应用s: Automotive Body Electronics, Automotive Lighting Control, Industrial Sensor Conditioning, Battery-Powered IoT Edge Nodes, Home Appliance Control, Functional-Safety Subsystems, Security and Access Control.
Automotive Body Electronics
The PIC16F18875-E/PTVAO AEC-Q100 qualification makes it ideal for automotive body controllers, including door modules, mirror controls, seat adjusters, and HVAC dampers. Its 14 KB Flash accommodates CAN/LIN stack fragments and state-machine logic, while the 36 I/O drive switches and PWM outputs for actuators. The Hardware Limit Timer (HLT) and Windowed Watchdog (WWDT) provide fault detection required by ISO 26262 functional-safety designs up to ASIL B. ADCC performs sensor conditioning for temperature, position, and current feedback, offloading the CPU via CIPs. XLP technology extends quiescent current to nanoAmps during key-off sleep, which is critical for battery-drain budgets in modern vehicles.
推荐
Automotive Lighting Control
PWM modules on the PIC16F18875-E/PTVAO drive LED current drivers with smooth dimming curves and diagnostics, enabling DRL, position, turn, and interior lighting systems. With 32 MHz CPU and CIPs, the device executes LIN-based lighting commands and runs closed-loop brightness control without CPU intervention. AEC-Q100 grade and -40C to +125C operation ensure reliability underhood and in headlamp modules. CRC/SCAN verifies Flash integrity to detect SEU faults that could corrupt lighting patterns. The 256-byte EEPROM stores trim and diagnostic counters for service history. Combined with the TQFP-44 package, the MCU fits compact lighting PCBs while providing 36 I/O for multi-channel designs.
推荐
Industrial Sensor Conditioning
The PIC16F18875-E/PTVAO ADCC performs oversampling, averaging, and threshold comparisons on analog sensors such as pressure transducers, thermistors, RTDs, and strain gauges. CIPs autonomously wake the MCU when sensor thresholds are exceeded, keeping deep-sleep current below 100 nA for IoT edge nodes. The 32 MHz speed handles digital filtering and one-wire or I2C sensor protocols. WWDT supervises firmware execution to detect lockups in unattended industrial environments. The 14 KB Flash supports IEC 61508 safe-diagnostic libraries for SIL-2 sensor transmitters. With 1.8-5.5 V operation, the same hardware interfaces to 3.3V digital sensors and 5V analog front-ends.
推荐
Battery-Powered IoT Edge Nodes
The PIC16F18875-E/PTVAO XLP technology achieves sub-uA sleep currents with RTC, brown-out, and WDT active, extending coin-cell battery life for wireless sensor nodes. The 14 KB Flash runs Thread/Zigbee/BLE radio co-processor glue, while ADCC monitors battery voltage and environmental sensors. Wake-on-peripheral interrupts via CLCs and CIPs avoid waking the CPU for routine checks. UART, I2C, and SPI simultaneously connect radios, sensors, and memory. The 1.8-5.5 V range supports LiSOCl2 primary cells, Li-Ion rechargeable packs, and USB-derived rails. Functional-safety features future-proof designs for ISO 26262 or IEC 61508 retrofits without changing silicon.
推荐
Home Appliance Control
The PIC16F18875-E/PTVAO runs BLDC, PFC, and user-interface logic in washing machines, dishwashers, refrigerators, and ovens. Its 36 I/O drive triac gate drivers, relay coils, valve solenoids, and seven-segment or TFT displays via SPI. CIPs implement zero-cross detection, BLDC commutation, and motor protection timers without CPU load. CRC/SCAN validates Flash for Class B or IEC 60730 safety compliance. The 256-byte EEPROM stores user settings, error logs, and cycle counters across power cycles. The wide 1.8-5.5 V supply tolerates rectified mains-rail variations. The TQFP-44 package supports IR-reflow manufacturing and pick-and-place assembly at scale.
推荐
Functional-Safety Subsystems
The PIC16F18875-E/PTVAO integrates Hardware Limit Timer (HLT), Windowed Watchdog Timer (WWDT), CRC/SCAN memory integrity checking, Flash access partitioning, and a fail-safe clock monitor, all of which are prerequisites for ISO 26262 ASIL B and IEC 61508 SIL 2 designs. A Safety Element out of Context (SEooC) approach lets OEMs qualify the MCU once and reuse it across body, lighting, and chassis subsystems. The 32 MHz MIPS performance handles safety diagnostics, sensor validation, and actuator command without external safety watchdogs. CIPs implement fault-detection routines in hardware, reducing software complexity and certification cost.
推荐
Security and Access Control
The PIC16F18875-E/PTVAO provides the secure decision logic for access control panels, smart locks, alarm keypads, and RFID readers. Its 36 I/O drive relay outputs, reader LEDs, buzzers, and tamper switches; UART and SPI connect to BLE/Zigbee modules for wireless credential exchange. AES hardware or software encryption runs at 32 MHz fast enough for handshake protocols. WWDT detects firmware lockups, and Flash CRC prevents malicious code injection. The 256-byte EEPROM stores access logs and credential hashes. The TQFP-44 footprint supports thru-hole-free wall-mount enclosures. XLP sleep keeps battery-backed panels drawing nanoAmps when armed.
推荐
推荐产品汇总
工程参考数据： PIC16F18875-E/PTVAO ——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 | PIC16F18875-E/PT | PIC16F18875-I/PTVAO | PIC16F18875T-E/PTVAO | PIC16F18857-I/SSVAO |
|---|---|---|---|---|---|
| Package | 44-pin TQFP (PTVAO) | 44-pin TQFP (PT) - same | 44-pin TQFP (PTVAO) - same | 44-pin TQFP (PTVAO) - same | 44-pin SSOP-style - same family |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| AEC-Q100 Qualified | Yes (VAO suffix) | No (PT suffix) | Yes (VAO suffix) | Yes (VAO suffix) | Yes (VAO suffix) |
| Temperature Grade | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) |
| Flash / RAM / EEPROM | 14 KB / 1 KB / 256 B | 14 KB / 1 KB / 256 B | 14 KB / 1 KB / 256 B | 14 KB / 1 KB / 256 B | 14 KB / 1 KB / 256 B |
| I/O Pins | 36 | 36 | 36 | 36 | 28 |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Approx. Unit Price (qty 1) | $3.45 | $3.20 | $3.45 | $3.45 | $3.10 |
关键差异点
- AEC-Q100 qualification on the 'VAO' suffix （对比 PIC16F18875-E/PT)
- Extended automotive temperature grade -40C to +125C （对比 PIC16F18875-I/PTVAO)
- 44-pin TQFP provides maximum 36 I/O in this family （对比 PIC16F18855-I/MV)
- Integrated functional-safety peripherals (HLT, WWDT, CRC/SCAN) （对比 PIC16F18875T-E/PTVAO (tape-reel variant))
设计说明
Place a 100 nF low-ESR ceramic decoupling capacitor within 3 mm of each VDD/AVDD pin, plus a bulk 4.7-10 uF tantalum or aluminum-polymer cap on the main supply rail. According to the Microchip PIC16(L)F18855/75 datasheet, AVDD should be tied to VDD and AVSS to VSS with their own decoupling network to avoid ADC noise coupling. The MCU draws nanoAmps in XLP sleep with RTC active, making bulk-cap sizing critical for wake-up surge currents.
Route ICSP/ICD pins (RB6/PGCLK, RB7/PGDAT, RA0/DAT) to a 6-pin header or test pad for production programming and debugging. According to Microchip guidelines, keep traces short (< 25 mm) and shielded from switching-power and PWM traces to avoid programmer noise coupling. Unused I/O must be configured as outputs low per the datasheet to minimize quiescent current in XLP designs. Allow copper pour beneath the TQFP thermal pad for thermal spreading in automotive underhood modules.
The PIC16F18875-E/PTVAO internal ADC uses a switched-capacitor input with input-impedance requirements that vary with sampling rate. According to the datasheet, configure ADCC with adequate acquisition time and add a low-impedance buffer if source impedance exceeds 1 kohm. CIPs allow analog-to-digital conversion chains to run without CPU intervention, freeing the core for comms and control loops. CRC/SCAN validates Flash during idle periods to detect bit-flip faults.
Do not exceed 5.5 V on VDD; transient protection (TVS) is recommended on automotive 12V battery feeds. According to the Microchip datasheet, ensure the WWDT is enabled in software for functional-safety designs - simply enabling the hardware block is insufficient without periodic service calls. When migrating PIC16F18875-E/PTVAO firmware from PIC16F18855, verify peripheral mapping differences; some CLC and PWM register layouts differ between the 28/40/44-pin variants.
合规信息
AEC-Q100 qualified per 'VAO' suffix. RoHS and REACH compliant per Microchip product page. Lead-free and halogen-free packaging.