PIC16LF1787T-I/MV - 8-bit MCU 32MHz 14KB Flash | Microchip
料号： PIC16LF1787T-I/MV ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.66 | $26.60 |
| 100 | $2.37 | $237.00 |
| 500 | $2.13 | $1,065.00 |
| 1,000 | $1.91 | $1,910.00 |
PIC16LF1787T-I/MV 概述
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path that integrates CPU, Flash, RAM, EEPROM, and peripherals. The PIC16 family occupies the mid-range PIC segment, sitting above baseline (PIC10/PIC12/PIC16F5x) and below the PIC18/dsPIC families. MCU -> PIC16 family -> PIC16LF178x sub-family -> PIC16LF1787 specific device, with the "LF" suffix and "nWLP/XLP" branding indicating Microchip's nanoWatt eXtreme Low Power technology for sleep currents in the sub-uA range.
Key features include 8 K x 14 Flash (14 KB), 1 KB RAM, 256 B EEPROM, the afore-mentioned 12-bit ADC and 8-bit DAC, OPAmp modules, three PSMC channels providing flexible PWM with programmable frequency, duty cycle, and dead-band control, plus standard peripherals (CCP, EUSART, I2C, SPI, comparators). Connectivity is I2C/SPI/UART on 35 I/O pins. Supply voltage spans 1.8 V to 3.6 V (LF "low-voltage/frequency" part).
Designers should note the UQFN-EP exposed pad must be soldered to the PCB ground plane for thermal dissipation; operating temperature range is -40 °C to +85 °C (industrial, "I" suffix). The PSMC peripheral differentiates this MCU from standard CCP timers by allowing digital feedback control of PWM frequency and pulse begin/end times. When migrating firmware, the PSMC registers and trigger sources differ from dsPIC PWM modules - check the
Note: datasheet for register maps and the "Migrating from PIC16F1787" application note (refer to manufacturer documentation).
Typical applications include LED lighting drivers (using PSMC for high-resolution dimming), Switch-mode power supply controllers, motor control (brushed DC up to 1.5 A drive via the integrated OPAmp + PSMC), battery-powered IoT sensor nodes (nWLP/XLP sleep modes), and small appliance control panels. The wide Vdd range and integrated analog make it a strong fit for mixed-signal designs that need to minimize external components.
When designing with this device, the LF variant requires the 32 MHz internal oscillator to be used carefully - check the factory calibration value in the OSCTUNE register for temperature compensation. Total I/O count is 35 across a 40-pin package; the remaining pins are dedicated to Vdd/Vss and the EP. Plan pin allocation early, especially when assigning analog functions (AN0-ANxx) and the dedicated OPAmp input pins.
直接替换替代料： PIC16LF1787T-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： PIC16LF1787T-I/MV （相同外形与封装尺寸） ——差异在于 Package, Program Memory (Flash), DAC, ADC, Core Architecture.
快速对比工具——选择替代料号进行并排对比：
PIC16LF1786T-I/MV
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC16LF1784T-I/MV
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.74 / 个
查看数据手册 →PIC16LF1782T-I/MV
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.55 / 个
查看数据手册 →PIC16F1787T-I/MV
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.1 / 个
查看数据手册 →PIC16LF1787-E/MV
✅ 直接替换✓ 有现货
$2.61 / 个
查看数据手册 →PIC16LF1787-I/MV
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC16LF1787T-I/MV 最大额定值与电气特性
| Core Architecture | 8-bit PIC RISC |
| Family | PIC16LF178x (PIC16F1787 core, low-voltage "LF" variant) |
| Program Memory (Flash) | 14 KB (8 K x 14 words) |
| Data RAM | 1 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage (Vdd) | 1.8 V to 3.6 V |
| Number of I/O Pins | 35 |
| ADC | 12-bit |
| DAC | 8-bit |
| Operational Amplifiers | Yes (integrated OPAmp modules) |
| PSMC Channels | 3 (Programmable Switch Mode Controller) |
| Communication Interfaces | I2C, SPI, EUSART (UART) |
| 工作温度 | -40 °C to +85 °C (Industrial, "I") |
| 封装 | 40-pin UQFN-EP, 5x5 mm |
| 安装类型 | Surface Mount |
| Low-Power Technology | nanoWatt XLP (nWXLP) |
| RoHS 状态 | Compliant |
PIC16LF1787T-I/MV 引脚配置
| 引脚 1 | RA0/AN0/C1IN0-/DAC/OPA1IN+ — PORTA bit 0 / Analog input / Comparator input / DAC output / OPAmp1 input |
| 引脚 2 | RA1/AN1/C1IN1- — PORTA bit 1 / Analog input 1 / Comparator input |
| 引脚 3 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| 引脚 4 | RA3/AN3/C1IN1+ — PORTA bit 3 / Analog input 3 / Comparator non-inverting input |
| 引脚 5 | RA4/AN4/C2OUT — PORTA bit 4 / Analog input 4 / Comparator 2 output |
| 引脚 6 | RA5/AN5 — PORTA bit 5 / Analog input 5 |
| 引脚 7 | RA6 — PORTA bit 6 |
| 引脚 8 | RA7 — PORTA bit 7 |
| 引脚 9 | VSS — Ground reference |
| 引脚 10 | VDD — Positive supply (1.8 V to 3.6 V) |
| 引脚 11 | RB0/INT — PORTB bit 0 / External interrupt |
| 引脚 12 | RB1 — PORTB bit 1 |
| 引脚 13 | RB2 — PORTB bit 2 |
| 引脚 14 | RB3 — PORTB bit 3 |
| 引脚 15 | RB4 — PORTB bit 4 |
| 引脚 16 | RB5 — PORTB bit 5 |
| 引脚 17 | RB6/ICSPCLK — PORTB bit 6 / ICSP clock |
| 引脚 18 | RB7/ICSPDAT — PORTB bit 7 / ICSP data |
| 引脚 19 | VSS — Ground |
| 引脚 20 | VDD — Positive supply |
| 引脚 21 | RC0 — PORTC bit 0 |
| 引脚 22 | RC1 — PORTC bit 1 |
| 引脚 23 | RC2 — PORTC bit 2 |
| 引脚 24 | RC3 — PORTC bit 3 |
| 引脚 25 | RC4 — PORTC bit 4 |
| 引脚 26 | RC5 — PORTC bit 5 |
| 引脚 27 | RC6 — PORTC bit 6 |
| 引脚 28 | RC7 — PORTC bit 7 |
| 引脚 29 | VSS — Ground |
| 引脚 30 | VDD — Positive supply |
| 引脚 31 | RD0 — PORTD bit 0 |
| 引脚 32 | RD1 — PORTD bit 1 |
| 引脚 33 | RD2 — PORTD bit 2 |
| 引脚 34 | RD3 — PORTD bit 3 |
| 引脚 35 | RD4 — PORTD bit 4 |
| 引脚 36 | RD5 — PORTD bit 5 |
| 引脚 37 | RD6 — PORTD bit 6 |
| 引脚 38 | RD7 — PORTD bit 7 |
| 引脚 39 | RE0 — PORTE bit 0 |
| 引脚 40 | RE1 — PORTE bit 1 |
| 引脚 EP | EP — Exposed thermal pad - must be soldered to grounded copper pour |
典型应用
PIC16LF1787T-I/MV 适用于 6 应用s: LED Lighting Driver with PSMC Dimming, Switch-Mode Power Supply (SMPS) Controller, Battery-Powered IoT Sensor Node, Small Appliance Control Board (Coffee Machine, Mixer), Closed-Loop Sensor Conditioning Hub, Automotive Interior Lighting/Mirror Module.
LED Lighting Driver with PSMC Dimming
The PIC16LF1787T-I/MV's three PSMC channels drive high-resolution PWM dimming of LED strings, replacing an external PWM controller IC. The 32 MHz core and 12-bit ADC enable closed-loop current control at >200 kHz PWM frequencies, which eliminates audible flicker in constant-current LED drivers. Running from 1.8 V-3.6 V, this device fits battery and USB-powered LED lamps, and the nanoWatt XLP sleep modes reduce standby current below 1 uA to meet stringent energy-star standby budgets when the lamp is off.
推荐
Switch-Mode Power Supply (SMPS) Controller
The PIC16LF1787T-I/MV delivers full SMPS functionality with its three PSMC channels, providing programmable frequency, duty cycle, rising/falling dead-band, and hardware fault shutdown. The integrated OPAmp modules configure as the current-sense amplifier directly, eliminating an external op-amp. The 12-bit ADC samples Vout for digital feedback regulation. This single-chip SMPS approach cuts BOM cost and PCB area in AC/DC adapters, isolated DC/DC converters, and battery chargers up to ~50 W.
推荐
Battery-Powered IoT Sensor Node
The PIC16LF1787T-I/MV runs from 1.8 V-3.6 V with nanoWatt XLP sleep current below 1 uA in doze/idle modes, making it ideal for coin-cell or 2xAA battery sensor nodes. Its 12-bit ADC reads analog sensors (temperature, light, gas) and its I2C/SPI/EUSART interfaces connect to digital sensors. Compact 5x5 mm UQFN-EP footprint minimizes PCB area for wearable or smart-home sensor tags. Combined with its 14 KB Flash, the device runs custom firmware plus protocol stacks (e.g., Modbus or proprietary RF command sets).
推荐
Small Appliance Control Board (Coffee Machine, Mixer)
The PIC16LF1787T-I/MV's integrated OPAmp + DAC + ADC subsystems replace multiple discrete components in small appliances. The PSMC channels drive TRIAC or MOSFET gate drivers for motor speed control (low-V brushes) while CCP/EUSART control user keypads/buttons. Its wide 1.8 V-3.6 V Vdd simplifies power-rail selection in 2xAA designs, and its industrial temperature range (-40 to +85 °C) covers kitchen and garage deployments. This consolidates the BOM into a single MCU in coffee makers, blenders, and similar appliances.
推荐
Closed-Loop Sensor Conditioning Hub
The PIC16LF1787T-I/MV integrates 12-bit ADC, 8-bit DAC, and OPAmp modules that close the loop on analog sensors, eliminating external signal-chain components. The 8-bit DAC provides offset or excitation to bridge-type sensors while the OPAmp gain-stages the signal and the ADC digitizes the result. The 35 I/O pins support multi-channel sensor matrices (e.g., 4-wire RTD, strain gauge), and EUSART provides reliable wired connectivity in factory automation or HVAC applications.
推荐
Automotive Interior Lighting/Mirror Module
Although not AEC-Q100 qualified at this variant, the PIC16LF1787T-I/MV can be used in non-safety automotive interior subsystems like ambient lighting or rear-view mirror modules. Its PSMC channels drive RGB LEDs with smooth cross-fades and the wide Vdd range tolerates 12 V battery transients when paired with an external regulator. The compact 5x5 mm UQFN-EP footprint eases integration into slim mirror housings, and its 12-bit ADC senses ambient light to set adaptive brightness.
推荐
推荐产品汇总
工程参考数据： PIC16LF1787T-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 | PIC16LF1786T-I/MV | PIC16LF1784T-I/MV | PIC16LF1782T-I/MV | PIC16F1787T-I/MV |
|---|---|---|---|---|---|
| Package | 40-pin UQFN-EP (5x5 mm) | 40-pin UQFN-EP (5x5 mm) - same | 40-pin UQFN-EP (5x5 mm) - same | 40-pin UQFN-EP (5x5 mm) - same | 40-pin UQFN-EP (5x5 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 14 KB | 14 KB (full size variant of family) | 7 KB | 3.5 KB | 14 KB |
| Data RAM | 1 KB | 1 KB | 512 B | 256 B | 1 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply Voltage (Vdd) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 5.5 V |
| I/O Pins | 35 | 35 | 35 | 35 | 35 |
| PSMC Channels | 3 | 3 | 3 | 3 | 3 |
| Low-Power Technology | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP (XLP family branding) |
关键差异点
- Three PSMC channels with programmable dead-band and fault shutdown （对比 PIC16LF1786T-I/MV)
- Integrated OPAmp + 8-bit DAC + 12-bit ADC reduces external components （对比 PIC16LF18857)
- Wide Vdd 1.8 V to 3.6 V matches battery-powered designs （对比 PIC16F1787T-I/MV)
设计说明
The 40-pin UQFN-EP package's exposed thermal pad MUST be soldered to a grounded copper pour (minimum 1 square inch of 1 oz copper on the top layer) to meet the device's thermal envelope. Without the EP soldered, the junction-to-ambient thermal resistance (theta_JA) rises dramatically and the silicon die can overheat even at moderate ambient loads. Use thermal vias under the EP to inner/ground layers for additional heat spreading; this is critical when running full CPU speed at 32 MHz with active peripherals.
Place the bulk Vdd decoupling capacitor (4.7 uF or 10 uF ceramic) within 5 mm of the Vdd pins and a 100 nF ceramic cap within 2 mm of each Vdd pin. The PIC16LF1787 has multiple Vdd/Vss pairs around the package - each pair needs its own bypass capacitor. Route analog signals (ANx, DAC, OPAmp inputs) far from high-current digital traces and from the PSMC PWM outputs to avoid analog coupling. Place the ICSP clock/data (RB6/RB7) on dedicated test pads if you plan to use in-circuit programming.
When migrating firmware across the PIC16LF178x family (1787 -> 1786 -> 1784 -> 1782), be aware that the Flash map and RAM allocation are different; re-validate linker scripts against the target device's data sheet, not just the family overview. Also confirm the 32 MHz internal oscillator's OSCTUNE factory calibration is within the device's operating range - LF parts have a different calibration profile than F parts. Finally, the PSMC module's output polarity, dead-band, and fault-shutdown behavior differ from generic dsPIC PWM; check the PIC16L(F)1787 datasheet (DS40001874D) PSMC section before re-using code from another MCU.
合规信息
RoHS and lead-free per Microchip's UQFN family. Not AEC-Q100 qualified; for automotive applications requiring qualification, contact Microchip for PIC16LF1787T-QML or use a different AEC-Q100 qualified PIC16 variant. REACH SVHC status should be confirmed per the latest Microchip declaration.
