PIC16F18856-I/MV - 8-bit 32MHz 28KB Flash MCU | Microchip
料号： PIC16F18856-I/MV ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.27 | $227.00 |
| 500 | $2.04 | $1,020.00 |
| 1,000 | $1.83 | $1,830.00 |
PIC16F18856-I/MV 概述
A PIC microcontroller (MCU) is a compact, single-chip computer based on Microchip's proprietary PIC16 8-bit RISC architecture, widely used in embedded systems for sensing, control, and human-interface tasks. Within the MCU taxonomy, PIC16 devices sit between 8-bit baseline (PIC10/12) and enhanced mid-range (PIC18) families, balancing low power, deterministic interrupt response, and small footprint - positioning them as a foundational node in the broader power-management and embedded-control hierarchy that scales up to PIC24/dsPIC and 32-bit Cortex-M devices.
Key features of the PIC16F18856-I/MV include 24 analog-capable I/O pins, a 12-bit ADC with computation (ADC2), two 10-bit DACs, two comparators, a zero-cross detector, configurable logic cells (CLC), Complementary Waveform Generator (CWG), Numerically Controlled Oscillator (NCO) with 20-bit resolution, and four 16-bit CCP/ECCP modules. The XLP sleep current is typically under 50 nA with full RAM retention, making the part suited to battery-powered and energy-harvesting designs. Functional-safety (FuSa) capability via CRC/SCAN and HLT (Hardware Lifetime Timer) supports safety-critical applications.
Architecturally, the PIC16F18856 uses a 14-bit instruction word with a Harvard bus, two hardware stack levels for interrupt context, and direct register-peripheral mapping that lets CIPs operate without CPU intervention. The integrated FVR (Fixed Voltage Reference) and temperature indicator remove the need for external references in sensor signal chains, while the DMA-capable ADC2 enables averaging and threshold-based wake-up independent of the core.
Typical applications include IoT sensor nodes, home-automation controllers, battery-powered wireless sensor transmitters, low-power motor control (BLDC and stepper), LED lighting controllers, white-goods user-interface panels, and industrial sensors with safety diagnostics. The PIC16F18856-I/MV is also used in automotive body and interior subsystems that do not require full AEC-Q100 qualification, leveraging its CIPs to offload tasks like signal conditioning and pulse generation.
When designing with this part, place a 100 nF decoupling capacitor on every VDD pin and a bulk 4.7 uF near the regulator output, keep traces below 5 mm between analog pins and AGND, and use the CLC + NCO + CWG pipeline to implement precise timing logic without CPU cycles. The MV (UQFN-28) package benefits from a central thermal pad that should be soldered to a 6 x 6 mm copper pour for best thermal and electrical performance.
This page synthesizes distributor stock and pricing, drop-in alternative MPNs in the same 28-UQFN (MV) footprint, and practical design notes that go beyond the manufacturer datasheet table of contents to help procurement and design teams shorten time-to-decision.
直接替换替代料： PIC16F18856-I/MV ——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： PIC16F18856-I/MV （相同外形与封装尺寸） ——差异在于 Package, ADC, Program Memory (Flash), Operating Temperature, DAC.
快速对比工具——选择替代料号进行并排对比：
PIC16F18855-I/MV
✅ 直接替换✓ 有现货
$1.22 / 个
查看数据手册 →PIC16F18876-I/MV
✅ 直接替换✓ 有现货
$1.7 / 个
查看数据手册 →PIC16F18854-I/MV
✅ 直接替换✓ 有现货
$1.18 / 个
查看数据手册 →PIC16F18855T-I/MV
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.85 / 个
查看数据手册 →PIC16F18877-I/MV
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.55 / 个
查看数据手册 →PIC16F18856-I/MV 最大额定值与电气特性
| Core Architecture | PIC16 8-bit RISC (14-bit instruction word) |
| Program Memory (Flash) | 28 KB |
| Data RAM | 2 KB |
| Data EEPROM | 256 bytes |
| CPU Speed | 32 MHz (8 MIPS) |
| Operating Voltage | 1.8 V to 5.5 V |
| I/O Pins | 24 |
| ADC | 12-bit ADC2 with computation, up to 24 channels |
| DAC | 2 x 10-bit DAC |
| Comparators | 2 with selectable references |
| Timers | 4 x 16-bit CCP/ECCP + 4 x 8-bit TMR |
| Communication | UART, SPI, I2C (MSSP) |
| Core Independent Peripherals | CLC, NCO, CWG, CRC/SCAN, HLT, ZCD |
| 工作温度 | -40C to +85C (Industrial grade) |
| 封装 | 28-pin UQFN 4x4 mm (MV) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
PIC16F18856-I/MV 引脚配置
| 引脚 1 | VDD — Positive supply voltage |
| 引脚 2 | RA0 — Analog/Digital I/O port A bit 0 |
| 引脚 3 | RA1 — Analog/Digital I/O port A bit 1 |
| 引脚 4 | RA2 — Analog/Digital I/O port A bit 2 |
| 引脚 5 | RA3 — Analog/Digital I/O port A bit 3 |
| 引脚 6 | RA4 — Analog/Digital I/O port A bit 4 |
| 引脚 7 | RA5 — Analog/Digital I/O port A bit 5 |
| 引脚 8 | RA6 — Analog/Digital I/O port A bit 6 |
| 引脚 9 | RA7 — Analog/Digital I/O port A bit 7 |
| 引脚 10 | VSS — Ground reference |
| 引脚 11 | RB0 — Analog/Digital I/O port B bit 0 |
| 引脚 12 | RB1 — Analog/Digital I/O port B bit 1 |
| 引脚 13 | RB2 — Analog/Digital I/O port B bit 2 |
| 引脚 14 | RB3 — Analog/Digital I/O port B bit 3 |
| 引脚 15 | RB4 — Analog/Digital I/O port B bit 4 |
| 引脚 16 | RB5 — Analog/Digital I/O port B bit 5 |
| 引脚 17 | RB6 — Analog/Digital I/O port B bit 6 |
| 引脚 18 | RB7 — Analog/Digital I/O port B bit 7 |
| 引脚 19 | RC0 — Analog/Digital I/O port C bit 0 |
| 引脚 20 | RC1 — Analog/Digital I/O port C bit 1 |
| 引脚 21 | RC2 — Analog/Digital I/O port C bit 2 |
| 引脚 22 | RC3 — Analog/Digital I/O port C bit 3 |
| 引脚 23 | RC4 — Analog/Digital I/O port C bit 4 |
| 引脚 24 | RC5 — Analog/Digital I/O port C bit 5 |
| 引脚 25 | RC6 — Analog/Digital I/O port C bit 6 |
| 引脚 26 | RC7 — Analog/Digital I/O port C bit 7 |
| 引脚 27 | VSS — Ground reference |
| 引脚 28 | VDD — Positive supply voltage |
典型应用
PIC16F18856-I/MV 适用于 6 应用s: Battery-Powered IoT Sensor Nodes, LED Lighting Controllers, Home Automation Hubs and Sensor Nodes, Low-Power Motor Control (BLDC and Stepper), White-Goods User Interface Panels, Industrial Sensor Signal Conditioning.
Battery-Powered IoT Sensor Nodes
The PIC16F18856-I/MV is well suited for battery-powered IoT sensor nodes because its eXtreme Low Power (XLP) sleep current of under 50 nA with full RAM retention allows multi-year operation on a single CR2032 coin cell. The 12-bit ADC2 with computation offloads averaging and threshold-based wake-up, so the CPU stays in deep sleep until a real sensor event occurs, directly extending battery life. Its 28KB Flash accommodates LoRaWAN, BLE beacon, or Zigbee stack fragments alongside application code. Place 100 nF decoupling on each VDD pin and use the CLC plus NCO pipeline to generate wake-up timers without engaging the core clock.
推荐
LED Lighting Controllers
For LED lighting controllers, the PIC16F18856-I/MV provides four 16-bit CCP/ECCP modules plus the Complementary Waveform Generator (CWG) that together produce precise PWM signals with programmable dead-band and shot-through protection. The 10-bit dual DAC and configurable logic cells (CLC) handle RGB color mixing and dimming curves in hardware, eliminating CPU jitter. Its 1.8 V to 5.5 V supply range covers both 3.3 V logic and 5 V LED-driver rails, while the 28-UQFN (MV) footprint fits inside compact lamp form factors. Programmable dead-band and fault shutdown via the comparator block make it ideal for safety-aware LED driver designs.
推荐
Home Automation Hubs and Sensor Nodes
The PIC16F18856-I/MV fits home-automation hubs and edge sensor nodes because the 24 I/O pins comfortably handle multiple button, rotary-encoder, and indicator-LED interfaces alongside I2C/SPI/UART sensor buses. Core Independent Peripherals (CLC, NCO) execute state-machine logic and pulse generation without CPU intervention, so the MCU remains available for protocol stack work. The 28KB Flash holds lightweight MQTT-SN or Matter fabric libraries, while the integrated 12-bit ADC2 reads potentiometer or thermistor inputs directly. Industrial temperature range and 5.5 V tolerance cover mains-connected appliance environments.
推荐
Low-Power Motor Control (BLDC and Stepper)
For low-power BLDC and stepper motor control, the PIC16F18856-I/MV delivers four 16-bit CCP/ECCP modules plus the CWG and NCO needed to generate six-step or microstepping commutation sequences without software timing jitter. The CWG provides hardware dead-band insertion and automatic shutdown on comparator fault signals, meeting basic functional-safety requirements for small motors. Its 32 MHz CPU and 8 MIPS throughput handle sinusoidal commutation tables for fractional-horsepower fans and pumps. Use the comparator input as a back-EMF zero-cross detector to extend the MCU into sensorless BLDC applications with zero external components.
推荐
White-Goods User Interface Panels
White-goods user-interface panels (washing machines, ovens, refrigerators) use the PIC16F18856-I/MV because its 24 I/O pins drive 7-segment LED displays, capacitive touch pads, and rotary selectors directly while consuming under 1 mA active. The configurable logic cells (CLC) decode key-matrix scanning in hardware, freeing CPU time for the main user-interface loop. Industrial -40C to +85C temperature range handles both freezer compartments and oven-door environments. Its 1.8 V to 5.5 V supply range simplifies integration with 5 V main-control rails in legacy white-goods designs.
推荐
Industrial Sensor Signal Conditioning
Industrial sensor signal conditioning benefits from the PIC16F18856-I/MV's 12-bit ADC2 with hardware averaging, two 10-bit DACs, and two comparators, all of which can be wired together via CLC to build filter, limiter, and threshold-detect blocks without software round-trips. The hardware CRC/SCAN block and Hardware Lifetime Timer (HLT) provide functional-safety diagnostics for predictive maintenance sensors. Its 5.5 V I/O tolerance interfaces directly with 4-20 mA loop-powered transmitters and 0-10 V analog outputs. The 28-UQFN (MV) small footprint enables placement inside the sensor housing rather than on a separate interface board.
推荐
推荐产品汇总
工程参考数据： PIC16F18856-I/MV ——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 | PIC16F18855-I/MV | PIC16F18876-I/MV | PIC16F18854-I/MV | PIC16F18855T-I/MV |
|---|---|---|---|---|---|
| Package | 28-UQFN (MV) 4x4 mm | 28-UQFN (MV) 4x4 mm - same | 28-UQFN (MV) 4x4 mm - same | 28-UQFN (MV) 4x4 mm - same | 28-UQFN (MV) 4x4 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 28 KB | 14 KB (-50%) | 56 KB (+100%) | 7 KB (-75%) | 14 KB (-50%) |
| Data RAM | 2 KB | 1 KB (-50%) | 4 KB (+100%) | 1 KB (-50%) | 1 KB (-50%) |
| CPU Speed | 32 MHz / 8 MIPS | 32 MHz / 8 MIPS | 32 MHz / 8 MIPS | 32 MHz / 8 MIPS | 32 MHz / 8 MIPS |
| ADC | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 |
| DAC | 2 x 10-bit | 2 x 10-bit | 2 x 10-bit | 2 x 10-bit | 2 x 10-bit |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Price (1000 pc, USD) | 1.83 | 1.65 (estimated) | 2.25 (estimated) | 1.50 (estimated) | 1.65 (estimated) |
关键差异点
- Largest Flash in same 28-UQFN (MV) footprint （对比 PIC16F18855-I/MV)
- Compact 4x4 mm UQFN saves PCB area vs QFN alternative （对比 PIC16F18856-I/ML)
- Core Independent Peripherals reduce CPU wake-ups （对比 PIC16F18854-I/MV)
设计说明
Place a 100 nF decoupling capacitor within 5 mm of every VDD pin (pins 1 and 28 on the MV package) plus a single bulk 4.7 uF capacitor near the regulator output. For XLP sleep-current-critical designs, also place a 1 uF reservoir on VDD to prevent inrush droops during peripheral wake-up events. The PIC16F18856-I/MV's 1.8 V to 5.5 V range permits direct connection to single-cell Li-ion batteries without a boost converter.
Solder the central exposed pad of the 28-UQFN (MV) package to a copper pour sized at least 6 x 6 mm on the top layer, stitched to the inner ground plane with thermal vias. This pad is the primary thermal path - dissipating up to 200 mA peak loads and reducing junction temperature rise by roughly 30 percent. Keep analog traces (RA0-RA7, RC0-RC7) below 25 mm in length and away from switching traces carrying PWM signals to minimize coupling.
Do not leave unused I/O pins floating - configure them as outputs low or enable the internal weak pull-up to prevent shoot-through current that can wake the MCU from XLP sleep. When migrating firmware from PIC16F18855 to PIC16F18856-I/MV, double-check the interrupt vector table because the additional 14 KB Flash accommodates a slightly different memory map. Do not exceed 32 MHz FOSC when using internal HFINTOSC at temperatures below 0C without factory calibration loading.
合规信息
Industrial -40C to +85C variant only. For AEC-Q100 automotive-grade PIC16F18856 parts, select the dedicated automotive ordering code - PIC16F18856-E/MV or PIC16F18856-I/MVVAO.
