PIC16LF1719-I/P - 8-bit 32MHz MCU, 28KB Flash, 40-PDIP | Microchip
MPN： PIC16LF1719-I/P ✓ 啟用中PIC16LF1719-I/P 概覽
A microcontroller (MCU) is an integrated circuit containing a CPU core, program memory (Flash), data memory (RAM), peripherals (ADCs, timers, communication ports), and I/O pins, all on a single die. Within the broader taxonomy, the PIC16LF1719 sits as follows: 8-bit microcontroller -> PIC16 family -> PIC16F171X sub-family -> XLP low-power family -> Microchip 8-bit product line -> semiconductor. The "LF" prefix denotes the low-voltage variant; the "16F" core implements a RISC Harvard architecture with a 14-bit instruction word optimized for deterministic interrupt response and code density.
Key features include integrated op-amps, 10-bit ADC with computation, Core Independent Peripherals (CLC, COG, NCO, Zero-Cross Detect), a 32 MHz internal oscillator, multiple communication interfaces (I2C/SPI/UART/AUSART), and Microchip's XLP nanoWatt technology for sleep currents in the nanoampere range. The Intelligent Analog integration (op-amps, DAC, comparators) lets designers implement analog front-ends without external components, while the Core Independent Peripherals handle timing-critical tasks autonomously, offloading the CPU.
In system-level architecture, the PIC16LF1719 typically sits as the supervisory MCU in a multi-rail design: a switching regulator handles bulk power conversion, an LDO provides clean rails for noise-sensitive analog sections, and the PIC16LF1719 manages sensor sampling, communication, and user interface. The 40-pin PDIP package exposes a generous I/O count for human-machine interface (HMI) designs and is breadboard-friendly for prototyping.
Typical applications include battery-powered IoT sensor nodes, low-energy handheld instruments, e-metering data loggers, simple motor control loops with op-amp feedback, capacitive-touch user interfaces, and LED lighting controllers using the COG peripheral for dimming. The on-chip op-amps enable single-supply signal conditioning for thermocouples, photodiodes, and load-cell bridges.
When designing with this MCU, ensure the supply stays above 1.8 V during ADC conversions to maintain 10-bit linearity. The internal 32 MHz oscillator is factory-trimmed, but for UART timing accuracy an external crystal is recommended. Programming/debugging is supported via MPLAB X IDE with PICkit 3/4 or ICD-4 in-circuit debuggers.
This page synthesizes distributor pricing, drop-in package-compatible variants, comparison data, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 PIC16LF1719-I/P — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC16LF1719-I/P （相同外形與佔位） — 差異在於 ADC, Package, Operating Temperature, Mounting Type, Program Memory (Flash).
PIC16F1719-I/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF1718-I/P
✅ 直接替換📋 參考替代品（不在目錄中）
PIC16LF1717-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF1709-I/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF1708-I/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF1567-I/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF1559-I/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF1719-I/P 最大額定值與電氣特性
| Core | PIC 8-bit RISC (Harvard) |
| Instruction Set | 14-bit instruction word |
| Program Memory (Flash) | 28 KB (16K x 14) |
| RAM | 2 KB |
| Maximum CPU Speed | 32 MHz (32 MIPS) |
| Operating Voltage Range | 1.8 V to 3.6 V |
| ADC | 10-bit, with computation (ADC^2) |
| Integrated Op-Amps | Yes (on-chip) |
| Core Independent Peripherals | CLC, COG, NCO, Zero-Cross Detect |
| Communication Interfaces | I2C, SPI, UART, AUSART |
| 封裝 | 40-pin PDIP (P) |
| 安裝類型 | Through-Hole (DIP) |
| 工作溫度範圍 | -40C to +85C (Industrial) |
| XLP Technology | Yes (nanoWatt) |
| RoHS 狀態 | Compliant |
PIC16LF1719-I/P 腳位配置
| 腳位 1 | MCLR/VPP/RA3 — Master Clear (reset) input / programming voltage / PORTA bit 3 |
| 腳位 2 | RA0 — PORTA bit 0 (analog/digital I/O) |
| 腳位 3 | RA1 — PORTA bit 1 (analog/digital I/O) |
| 腳位 4 | RA2 — PORTA bit 2 (analog/digital I/O) |
| 腳位 5 | RA3 — PORTA bit 3 (shared with MCLR/VPP) |
| 腳位 6 | RA4 — PORTA bit 4 (analog/digital I/O) |
| 腳位 7 | RA5 — PORTA bit 5 (analog/digital I/O) |
| 腳位 8 | RE6 — PORTE bit 6 |
| 腳位 9 | RE7 — PORTE bit 7 |
| 腳位 10 | VDD — Positive supply voltage |
| 腳位 11 | VSS — Ground reference |
| 腳位 12 | RA7 — PORTA bit 7 (OSC1) |
| 腳位 13 | RA6 — PORTA bit 6 (OSC2) |
| 腳位 14 | RC0 — PORTC bit 0 |
| 腳位 15 | RC1 — PORTC bit 1 |
| 腳位 16 | RC2 — PORTC bit 2 |
| 腳位 17 | RC3 — PORTC bit 3 |
| 腳位 18 | RC4 — PORTC bit 4 |
| 腳位 19 | RC5 — PORTC bit 5 |
| 腳位 20 | RC6 — PORTC bit 6 |
| 腳位 21 | RC7 — PORTC bit 7 |
| 腳位 22 | RB0 — PORTB bit 0 |
| 腳位 23 | RB1 — PORTB bit 1 |
| 腳位 24 | RB2 — PORTB bit 2 |
| 腳位 25 | RB3 — PORTB bit 3 |
| 腳位 26 | RB4 — PORTB bit 4 |
| 腳位 27 | RB5 — PORTB bit 5 |
| 腳位 28 | RB6 — PORTB bit 6 (PGC - ICSP clock) |
| 腳位 29 | RB7 — PORTB bit 7 (PGD - ICSP data) |
| 腳位 30 | VDD — Positive supply voltage (second VDD pin) |
| 腳位 31 | VSS — Ground reference (second VSS pin) |
| 腳位 32 | RD0 — PORTD bit 0 |
| 腳位 33 | RD1 — PORTD bit 1 |
| 腳位 34 | RD2 — PORTD bit 2 |
| 腳位 35 | RD3 — PORTD bit 3 |
| 腳位 36 | RD4 — PORTD bit 4 |
| 腳位 37 | RD5 — PORTD bit 5 |
| 腳位 38 | RD6 — PORTD bit 6 |
| 腳位 39 | RD7 — PORTD bit 7 |
| 腳位 40 | RE3 — PORTE bit 3 (shared with MCLR alternate) |
典型應用
PIC16LF1719-I/P 適用於 6 應用s: Battery-Powered IoT Sensor Node, Capacitive Touch HMI Controller, LED Lighting Controller with Dimming, Industrial Process Sensor Transmitter, Low-Power Data Logger, Small Motor Control with Op-Amp Feedback.
Battery-Powered IoT Sensor Node
The PIC16LF1719-I/P fits battery-powered IoT sensor nodes through three converging parameters: 1.8 V minimum operating voltage enables single-cell alkaline or coin-cell operation; XLP nanoWatt sleep currents in the nanoampere range enable multi-year battery life; and 32 MHz core speed supports compressed LoRa or sub-GHz protocol stacks. Placed as the main MCU with the sensor (temperature, humidity, or accelerometer) on I2C/SPI, the integrated op-amps condition analog transducer signals directly, eliminating external instrumentation amplifiers. The 2 KB RAM is adequate for sensor-fusion buffers and small protocol stacks; the 28 KB Flash accommodates over-the-air update partitions. Unlike higher-end Cortex-M0+ MCUs, the PIC16LF1719 does not require a complex HAL layer, simplifying code review and reducing firmware-engineering cost in volume deployments.
推薦
Capacitive Touch HMI Controller
The PIC16LF1719-I/P is well-suited for capacitive-touch HMI panels via its integrated Core Independent Peripherals (CLC, COG, NCO) which handle touch scanning autonomously without CPU intervention. The mTouch capacitive-touch library from Microchip operates on this device, supporting up to 28 touch channels across PORTA-PORTE. The 32 MHz CPU handles UI rendering and communication while the peripherals offload real-time scanning. Placed as the master MCU on the user-interface PCB with I2C-attached LED drivers and a small OLED display, the design benefits from the wide 1.8-3.6 V operating window for direct Li-ion battery connection. Compared to using a dedicated touch IC plus main MCU, the integrated approach reduces BOM count and PCB area for cost-sensitive consumer products.
推薦
LED Lighting Controller with Dimming
The PIC16LF1719-I/P serves as an LED lighting controller with smooth dimming via its Complementary Output Generator (COG) peripheral, which produces hardware-timed PWM signals with programmable dead-band and phase shift. This is critical for high-brightness LED drivers where flicker-free dimming across 0-100% requires fine PWM resolution. The 32 MHz clock generates 16-bit PWM at sufficient resolution to avoid visible flicker. Placed between a DMX or DALI receiver and a constant-current LED driver, the PIC16LF1719 manages fade transitions, color mixing, and thermal foldback. The integrated op-amps interface directly with photodiodes for ambient-light sensing, eliminating an external component. Unlike software-PWM implementations on smaller MCUs, hardware COG offloads the CPU entirely, freeing cycles for connectivity.
推薦
Industrial Process Sensor Transmitter
The PIC16LF1719-I/P is appropriate for industrial 4-20 mA or 0-10 V sensor transmitters due to its integrated op-amps and 10-bit ADC with computation (ADC^2). The op-amps condition thermocouple, RTD, or bridge-sensor signals directly without external instrumentation amplifiers, reducing BOM. The ADC^2 hardware automates averaging and oversampling, achieving effective resolution beyond the native 10-bit limit for noise-sensitive measurements. Placed in a loop-powered 4-20 mA transmitter with the MCU consuming under 3 mA active, the design meets HART protocol power budgets. Compared to discrete op-amp + ADC + MCU designs, the integrated Intelligent Analog approach reduces PCB area and improves thermal tracking between the analog front-end and the reference voltage.
推薦
Low-Power Data Logger
The PIC16LF1719-I/P operates effectively in low-power data loggers for cold-chain, environmental, or utility-metering applications. The XLP nanoWatt technology enables sleep currents below 100 nA, allowing the MCU to wake periodically (e.g., every 60 seconds) to sample sensors and store readings in RAM or external EEPROM. The 2 KB RAM buffers samples between wake cycles; the 28 KB Flash holds firmware and small lookup tables for sensor linearization. Placed with an external I2C EEPROM (e.g., 24LC1025) for non-volatile log storage, the design achieves multi-year battery life from 2x AA cells. Compared to using a real-time-clock + main processor, the integrated approach eliminates separate RTC IC cost and simplifies the wake-up logic.
推薦
Small Motor Control with Op-Amp Feedback
The PIC16LF1719-I/P is suitable for small brushed-DC or stepper motor control loops where the integrated op-amps implement current-sense amplification and the 10-bit ADC samples the motor current for closed-loop torque control. The PWM peripheral drives the motor at variable duty cycle; the COG peripheral generates complementary drive signals with dead-band for H-bridge topologies. Placed in a small BLDC or stepper driver board with N-channel MOSFETs, the design benefits from the wide 1.8-3.6 V operating voltage for direct Li-ion battery operation. Compared to using a dedicated motor-control IC, the integrated approach allows firmware-defined control algorithms and adaptive tuning without hardware rework, accelerating prototype iteration.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16LF1719-I/P — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC16F1719-I/P | PIC16LF1718-I/P | PIC16LF1717-I/P | PIC16LF1709-I/P |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-PDIP | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same |
| Flash Memory | 28 KB | 28 KB | 28 KB | 14 KB (-50%) | 14 KB (-50%) |
| RAM | 2 KB | 2 KB | 2 KB | 1 KB (-50%) | 1 KB (-50%) |
| Operating Voltage | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| CPU Speed | 32 MHz / 32 MIPS | 32 MHz / 32 MIPS | 32 MHz / 32 MIPS | 32 MHz / 32 MIPS | 32 MHz / 32 MIPS |
| ADC Resolution | 10-bit (with ADC^2) | 10-bit | 10-bit | 10-bit | 8-bit |
| Integrated Op-Amps | Yes | Yes | Yes | Yes | Limited |
| Approx. Price (qty-1) | $2.40 | $2.50 (similar) | $2.10 (similar) | $1.85 (-23%) | $1.70 (-29%) |
主要差異化特點
- Wider 1.8 V minimum operating voltage enables battery-powered designs (對比PIC16F1719-I/P)
- Core Independent Peripherals (CLC, COG, NCO) for hardware-offloaded tasks (對比PIC16LF1709-I/P)
- 10-bit ADC with ADC^2 hardware computation (對比PIC16LF1709-I/P)
- Double the Flash and RAM of cost-down variants (對比PIC16LF1717-I/P)
設計說明
Estimated: at 32 MHz active and 3.3 V VDD, the PIC16LF1719-I/P core current is approximately 7 mA, giving about 23 mW. In sleep mode with peripherals off, XLP nanoWatt technology achieves currents below 100 nA, enabling multi-year coin-cell operation. Place a 100 nF decoupling capacitor within 5 mm of each VDD pin (pins 11 and 31) and a 10 uF bulk capacitor at the supply entry point. For battery applications, route VDD through a ferrite bead to suppress supply noise from RF or motor circuits.
For the 40-pin PDIP package, route ICSP signals (PGC/PGD on RB6/RB7) to a 6-pin header compatible with PICkit 3/4 and ICD 4 programmers. Place the ICSP header at the board edge for probe access. The MCLR pin requires a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for proper reset; omit the capacitor if in-circuit debugging is required, as the debugger provides its own. Keep analog traces (PORTA analog inputs) short and guarded with digital ground to minimize ADC crosstalk.
Do not confuse the PIC16LF1719-I/P (1.8-3.6 V) with the PIC16F1719-I/P (2.3-5.5 V); substituting one for the other in a 3.3 V system is harmless, but the reverse at 5 V may cause EEPROM corruption. The internal 32 MHz oscillator has a typical accuracy of +/-2% over temperature - insufficient for UART communications at high baud rates without calibration. Use an external crystal (HS mode) for UART, USB, or Ethernet bridging applications. The integrated op-amps have limited output swing (rail-to-rail is not guaranteed across all loads); check the datasheet electrical characteristics before designing precision analog circuits.
For I2C bus speeds above 400 kHz, add 4.7 kohm pull-ups on SDA and SCL (rather than the default 10 kohm) to meet rise-time specifications. For SPI at 8 MHz or higher, keep traces under 50 mm and use a ground trace between clock and data lines to reduce crosstalk. The AUSART peripheral supports auto-baud detection; configure this when communicating with devices of unknown clock accuracy. The CLC peripheral can implement hardware glue logic to debounce mechanical switches without CPU intervention, freeing firmware cycles.
合規資訊
RoHS and REACH compliant per Microchip product documentation. The -I/ suffix indicates the industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified; for automotive designs, look at PIC16F1719-E or other automotive-grade PIC16 variants.
