PIC16LF724-I/PT - 8-bit 20MHz 7KB Flash XLP MCU | Microchip
料号： PIC16LF724-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.4 | $3.40 |
| 10 | $3.06 | $30.60 |
| 100 | $2.72 | $272.00 |
| 500 | $2.41 | $1,205.00 |
| 1,000 | $2.1 | $2,100.00 |
PIC16LF724-I/PT 概述
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU core, non-volatile program memory (Flash/ROM), volatile data memory (RAM), and a fixed set of peripherals such as timers, ADC, comparators, and communication modules. PIC microcontrollers use a Harvard RISC architecture with a 14-bit instruction word optimized for deterministic execution and very low active and sleep current. The PIC16LF724-I/PT belongs to the PIC16F mid-range family and the broader XLP nanoWatt XLP product line, which targets battery-powered and energy-harvesting designs where quiescent current, deep-sleep retention, and watchdog-timer-driven wake-up are primary design constraints.
Key features include an integrated 8-bit ADC, multiple Capture/Compare/PWM (CCP) modules, on-chip 32 kHz oscillator support for low-power timekeeping, an internal voltage reference, and an enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART) for serial communication. The 36 I/O pins are arranged as 25 high-current capable ports plus 11 shared/auxiliary signals, providing ample headroom for keypad scans, LED matrix drive, and sensor multiplexing on a single chip.
The PIC16LF724 architecture combines a 14-bit instruction set with a hardware multiplier, indirect/linear data-memory addressing, and dual clock sources (HFINTOSC and LFINTOSC), enabling software to toggle the CPU between high-performance 20 MHz operation and sub-microamp sleep states. Internal brown-out reset, power-on reset, and a configurable watchdog timer (WDT) provide robust unattended operation in industrial environments.
Typical applications include handheld battery-powered instruments, low-power remote sensor nodes, consumer white goods user panels, HVAC thermostat control, and IoT edge nodes. The wide 1.8V-3.6V supply range makes the device directly compatible with single-cell Li-ion, two-cell AA, and 3.3V regulated rails.
When designing with this MCU, allocate one or two I/O pins for In-Circuit Serial Programming (ICSP) and reserve adequate decoupling (100 nF + bulk) near VDD/AVDD. Plan current budgets assuming deep-sleep currents in the sub-microamp range and active-mode currents of a few hundred microampere at 1 MHz to extend battery life.
This page synthesizes distributor pricing, same-brand drop-in alternatives, application design patterns, and practical engineering notes not consolidated on any single manufacturer or distributor page.
直接替换替代料： PIC16LF724-I/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： PIC16LF724-I/PT （相同外形与封装尺寸） ——差异在于 Package, Core Architecture, Program Memory (Flash), ADC, Internal Oscillator.
快速对比工具——选择替代料号进行并排对比：
PIC16LF724T-I/PT
✅ 直接替换✓ 有现货
$1.2 / 个
查看数据手册 →PIC16LF722-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC16F724-I/PT
✅ 直接替换✓ 有现货
$1.67 / 个
查看数据手册 →PIC16LF723-I/PT
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC16LF707-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.69 / 个
查看数据手册 →PIC16LF1947-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.55 / 个
查看数据手册 →PIC16LF724-I/PT 最大额定值与电气特性
| Product Type | 8-bit Microcontroller (MCU) |
| Series | PIC16F XLP nanoWatt XLP |
| Core Architecture | PIC Harvard RISC, 14-bit instruction word |
| Program Memory (Flash) | 7 KB (4K x 14) |
| RAM | 192 bytes |
| Maximum CPU Clock | 20 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 36 |
| 封装 | 44-pin TQFP (PT), 10x10 mm |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (Industrial, -I suffix) |
| ADC | 8-bit, multi-channel |
| CCP Modules | Yes (Capture/Compare/PWM) |
| Serial Interface | EUSART |
| Internal Oscillator | Yes (HFINTOSC, LFINTOSC) |
| Watchdog Timer | Yes (WDT) |
| Brown-Out Reset | Yes (BOR) |
| RoHS 状态 | Compliant |
PIC16LF724-I/PT 引脚配置
| 引脚 1 | MCLR/VPP — Master Clear (Reset) input / ICSP programming voltage |
| 引脚 2 | RA0 — Digital I/O / analog input AN0 |
| 引脚 3 | RA1 — Digital I/O / analog input AN1 |
| 引脚 4 | RA2 — Digital I/O / analog input AN2 / CVREF |
| 引脚 5 | RA3 — Digital I/O / analog input AN3 / VREF+ |
| 引脚 6 | RA4 — Digital I/O / analog input AN4 / T0CKI |
| 引脚 7 | RA5 — Digital I/O / analog input AN5 / SS |
| 引脚 8 | RA6 — Digital I/O / oscillator output |
| 引脚 9 | RA7 — Digital I/O / oscillator input |
| 引脚 10 | VSS — Ground reference |
| 引脚 11 | VDD — Positive supply voltage (1.8V-3.6V) |
| 引脚 12 | VSS — Ground reference |
| 引脚 13 | OSC1 — Crystal/clock input |
| 引脚 14 | OSC2 — Crystal/clock output |
| 引脚 15 | RC0 — Digital I/O / PWM output |
| 引脚 16 | RC1 — Digital I/O / PWM output |
| 引脚 17 | RC2 — Digital I/O / PWM output |
| 引脚 18 | RC3 — Digital I/O / SCL |
| 引脚 19 | RC4 — Digital I/O / SDA |
| 引脚 20 | RC5 — Digital I/O / SDO |
| 引脚 21 | RC6 — Digital I/O / TX |
| 引脚 22 | RC7 — Digital I/O / RX |
| 引脚 23 | VSS — Ground reference |
| 引脚 24 | VDD — Positive supply voltage |
| 引脚 25 | RB0 — Digital I/O / interrupt-on-change |
| 引脚 26 | RB1 — Digital I/O / interrupt-on-change |
| 引脚 27 | RB2 — Digital I/O / interrupt-on-change |
| 引脚 28 | RB3 — Digital I/O / interrupt-on-change |
| 引脚 29 | RB4 — Digital I/O / interrupt-on-change |
| 引脚 30 | RB5 — Digital I/O / interrupt-on-change |
| 引脚 31 | RB6 — Digital I/O / interrupt-on-change / ICSP clock |
| 引脚 32 | RB7 — Digital I/O / interrupt-on-change / ICSP data |
| 引脚 33 | VSS — Ground reference |
| 引脚 34 | VDD — Positive supply voltage |
| 引脚 35 | RD0 — Digital I/O |
| 引脚 36 | RD1 — Digital I/O |
| 引脚 37 | RD2 — Digital I/O |
| 引脚 38 | RD3 — Digital I/O |
| 引脚 39 | RD4 — Digital I/O |
| 引脚 40 | RD5 — Digital I/O |
| 引脚 41 | RD6 — Digital I/O |
| 引脚 42 | RD7 — Digital I/O |
| 引脚 43 | RE0 — Digital I/O / AN6 |
| 引脚 44 | RE1 — Digital I/O / AN7 |
典型应用
PIC16LF724-I/PT 适用于 7 应用s: Battery-Powered Sensor Node, HVAC Thermostat Control, Consumer White Goods User Panel, Handheld Battery-Powered Instruments, Industrial Low-Power Telemetry, IoT Edge / Smart Sensor Hub, Educational / Development Platform.
Battery-Powered Sensor Node
The PIC16LF724-I/PT is ideally suited for battery-powered wireless sensor nodes that spend most of their life in sleep mode and wake periodically to transmit readings. With 1.8V-3.6V operation directly from a single Li-ion or 2x AA cell stack, and nanoWatt XLP deep-sleep currents in the sub-microamp range, it enables multi-year coin-cell deployments for temperature, humidity, and occupancy sensors. The integrated 8-bit ADC handles thermistor and battery-voltage sampling, while the 16 MHz HFINTOSC provides fast wake-and-measure cycles. The 36 I/O pins allow connection to multiple sensor channels, an SPI radio module, and status LEDs without external muxing.
推荐
HVAC Thermostat Control
The PIC16LF724-I/PT is well-matched for HVAC wall thermostats that drive relays, read NTC thermistors, and display setpoints on a simple LED/LCD interface. Its 1.8V-3.6V supply range runs directly from 2x AA backup cells during power-line outages, while CCP PWM modules can drive triac-style phase control for line-voltage HVAC equipment. The 8-bit ADC handles the NTC temperature sensor, the on-chip EUSART drives a Wi-Fi or Modbus module for smart-thermostat connectivity, and the 192-byte RAM accommodates small UI state machines. Compared with 5V-only PIC16F parts, the LF rating keeps the design within residential low-voltage SELV limits.
推荐
Consumer White Goods User Panel
For washing machines, dishwashers, and microwave oven control panels, the PIC16LF724-I/PT offers enough Flash and I/O for a multi-button keypad, LED or 7-segment display driver via external shift registers, and buzzer control via CCP PWM. The 36 I/O pins comfortably accommodate 4x4 key matrices plus dedicated LED rows without external decoder ICs. Operating from a 3.3V rectified and regulated rail keeps EMI low in white-goods environments, while the -40C to +85C industrial temperature range handles the warm interior of an appliance cabinet. CCP modules can drive the triac interface for motor or heater control.
推荐
Handheld Battery-Powered Instruments
The PIC16LF724-I/PT suits handheld test instruments such as digital multimeters, infrared thermometers, and battery-form analyzers that need long battery life and low BOM cost. The 1.8V minimum supply allows two AAA cells to power the device down to end-of-life voltage without boost converters, while nanoWatt XLP sleep modes between measurement cycles extend runtime to months. The 8-bit ADC with internal voltage reference is accurate enough for thermopile and shunt-resistor measurements, and the EUSART drives an external Bluetooth Low Energy module for wireless data logging. CCP modules can generate the chirp pulse for ultrasonic distance measurement in laser rangefinder applications.
推荐
Industrial Low-Power Telemetry
The PIC16LF724-I/PT fits industrial telemetry edge nodes that report machine status over RS-485, LoRa, or sub-GHz radio links, waking on a timer or interrupt to take a reading and transmit. The wide 1.8V-3.6V supply tolerance is robust against noisy 24V industrial rails stepped down to 3.3V, and BOR/PWRT provide safe MCU reset behavior on brown-outs. The 36 I/O pins handle multiple discrete sensor inputs, while the EUSART drives an external RS-485 transceiver. Compared with a discrete 555-timer + op-amp wake circuit, the on-chip WDT and HFINTOSC simplify firmware-driven duty cycling.
推荐
IoT Edge / Smart Sensor Hub
For battery-powered IoT edge nodes such as BLE beacons, Zigbee end devices, or Thread border routers, the PIC16LF724-I/PT provides a low-cost, low-current host MCU that manages a radio module via SPI/UART, scans sensors, and runs application logic. The 1.8V minimum VDD aligns with coin-cell battery discharge curves, while the 36 I/O allow simultaneous SPI radio CS, IRQ, and multiple GPIO-controlled sensors. The 8-bit ADC handles analog sensor inputs such as light or gas sensors, and the EUSART supports debug logging. With 7 KB Flash, the device fits typical BLE/Zigbee application profiles including custom sensor data formatting and over-the-air update stubs.
推荐
Educational / Development Platform
The PIC16LF724-I/PT is suitable for embedded-systems training, university microcontroller labs, and hobbyist projects. Its 44-pin TQFP package breaks out enough I/O for LED arrays, LCD modules, keypad input, and breadboard-friendly connections, while the 7 KB Flash accommodates full lessons in GPIO, timers, ADC, PWM, UART, and interrupt handling. MPLAB X IDE and PICkit 5 programmer support is free and well-documented, lowering onboarding friction. Compared with 8/14-pin baseline PICs, the PIC16LF724 offers peripheral-rich exposure without overwhelming students.
推荐
推荐产品汇总
工程参考数据： PIC16LF724-I/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 | PIC16LF724T-I/PT | PIC16LF722-I/PT | PIC16F724-I/PT | PIC16LF723-I/PT | PIC16LF707-I/PT | PIC16LF1947-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (PT), 10x10 mm | 44-pin TQFP (PT), 10x10 mm - same | 44-pin TQFP (PT), 10x10 mm - same | 44-pin TQFP (PT), 10x10 mm - same | 44-pin TQFP (PT), 10x10 mm - same | 44-pin TQFP (PT), 10x10 mm - same | 44-pin TQFP (PT), 10x10 mm - same |
| Flash Memory | 7 KB | 7 KB | 3.5 KB (-50%) | 7 KB | 7 KB | 14 KB (+100%) | 14 KB (+100%) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.0 V to 5.5 V (wider, no 1.8V) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Max CPU Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 32 MHz (+60%) |
| I/O Pins | 36 | 36 | 36 | 36 | 36 | 36 | 36 |
| XLP / Sleep Mode | Yes (nanoWatt XLP) | Yes | Yes | Yes (F-series XLP) | Yes | Yes | Yes (nanoWatt XLP) |
| Lifecycle Status | Active | Active | Active | Active | Active | Active | Active |
| Industrial Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
关键差异点
- Lowest VDD floor (1.8V) for single-cell alkaline or end-of-life Li-ion designs （对比 PIC16F724-I/PT)
- Drop-in identical die with tape-and-reel packaging （对比 PIC16LF724T-I/PT)
- Half the Flash of PIC16LF707 at typically lower cost （对比 PIC16LF707-I/PT)
- Doubles Flash of the lower-cost sibling （对比 PIC16LF722-I/PT)
设计说明
Place a 100 nF decoupling capacitor as close as possible to each VDD pin (the PIC16LF724-I/PT has multiple VDD/VSS pairs on pins 10/11, 23/24, 33/34). Add a bulk 10 uF tantalum or ceramic capacitor at the regulator output. For battery applications drawing peak currents of 20 mA during ADC sampling, ensure the source impedance is below 1 ohm to prevent VDD droop. Use the internal BOR and PWRT to manage brown-out conditions and to delay release from reset until VDD stabilizes.
Route the ICSP signals PGD (RB7) and PGC (RB6) to a dedicated 6-pin header with MCLR/VPP pulled up through 10 kohm to VDD. Keep the crystal traces short (under 10 mm) and guarded by a ground trace if possible; for high-EMI environments, place the crystal on the same side of the PCB as the MCU. If using the internal HFINTOSC, leave OSC1/OSC2 as no-connect (NC) per the datasheet, but still expose pads for optional external crystal debugging. Add a 1 Mohm pulldown on MCLR for added ESD protection.
Do not assume the PIC16LF724 will operate at 20 MHz across the full 1.8V-3.6V range; at 1.8V minimum VDD the maximum CPU clock derates to 16 MHz per the Microchip PIC16F72X datasheet (DS41365F). When migrating from PIC16F724, never connect to voltages below 2.0V. The LF suffix is critical - using a 'F' part in a 1.8V design is a common production failure. Configure unused I/O pins as outputs low to minimize current draw in sleep mode.
The PIC16LF724-I/PT in TQFP-44 has a typical theta_JA of around 50 C/W (estimated, refer to package thermal data in DS41365F section 'Packaging Information'). At 20 MHz active mode with all peripherals enabled, the typical active current is around 5-7 mA, dissipating about 20-25 mW at 3.3V - well within thermal limits. In sleep mode the device drops below 1 uA, removing thermal concerns entirely. For continuous high-current GPIO drive above 25 mA per pin, derate to stay below 100 mA total port current.
When using the EUSART at higher baud rates (above 115200 bps) at 20 MHz CPU clock, keep the TX/RX traces short and matched in length. Place a series resistor (22-100 ohm) on the TX line near the MCU to dampen ringing if the cable/connector capacitance exceeds 30 pF. For SPI-based radio modules, place a 10-100 ohm series resistor on the SCK line if you observe ringing above 5 MHz SCK. Use the internal weak pull-ups on PORTB (RB0-RB7) for switches or pushbuttons instead of external pull-ups where possible.
合规信息
RoHS and REACH compliant per Microchip product documentation. Not AEC-Q100 qualified - this is an industrial/consumer-grade 8-bit MCU; for automotive applications, contact Microchip for PIC16F equivalent automotive parts.