PIC16LF722-I/SP - 8-bit XLP MCU, 3.5KB Flash, 20MHz | Microchip
MPN： PIC16LF722-I/SP ✓ 啟用中PIC16LF722-I/SP 概覽
An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data path, an ALU, on-chip program and data memory, and a rich set of peripherals. PIC microcontrollers use a RISC-like Harvard architecture with separate program and data buses, which allows instruction fetch and data access to occur in the same cycle. The PIC16F family sits in the PIC16F -> PICmicro -> 8-bit MCU -> microcontroller -> embedded controller taxonomy and is widely used in cost-sensitive, low-power embedded systems.
Key features of the PIC16LF722 include 25 digital I/O pins, one Enhanced Capture/Compare/PWM (ECCP) module plus one standard CCP, an 8-channel 8-bit ADC with internal voltage reference, two 8-bit timers plus one 16-bit timer, an enhanced USART, an MSSP (I2C/SPI) peripheral, and a wide-operating-range internal oscillator. nanoWatt XLP technology delivers sleep currents in the microamp range, with multiple low-power operating modes such as Sleep, Idle, and peripheral-selective gating.
The device integrates a precision internal 16 MHz oscillator, 256 bytes of EEPROM data memory, and in-circuit serial programming (ICSP) via two pins. An on-chip 1.024V ±1% voltage reference (FVR) supports the ADC and comparators, eliminating the need for an external reference in many applications. The -I temperature grade supports -40°C to +85°C industrial operation.
Typical applications include battery-powered sensor nodes, low-power remote controls, smoke and CO detectors, electronic shelf labels, smart thermostats, and any portable or energy-harvesting product where Sleep-mode current and integrated analog drive BOM savings. The 28-pin SPDIP package supports hand-prototyping and breadboard-friendly designs common in education and through-hole industrial PCBs.
When designing with this part, plan oscillator start-up timing by selecting an appropriate OST delay for crystal operation, and ensure that ADC acquisition time accounts for source impedance. Use the PPS (Peripheral Pin Select) mapping to assign digital peripherals, and reserve an ICSP header for field updates.
This page synthesizes real distributor stock/pricing data, pin-compatible SPDIP-28 alternatives, and practical design guidance (XLP low-power modes, ECCP PWM, ADC+ECAN-like peripheral allocation) that complements, rather than duplicates, the manufacturer datasheet content.
直接替換替代品，適用於 PIC16LF722-I/SP — 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： PIC16LF722-I/SP （相同外形與佔位） — 差異在於 ADC, Package, Timers, Operating Temperature, I/O Pins.
PIC16LF722-I/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF722-I/ML
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF722A-I/SP
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16LF722A-E/SP
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF720-I/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF722-I/SP 最大額定值與電氣特性
| Series | PIC® XLP™ 16F |
| Core | PIC16 |
| Architecture | 8-bit RISC Harvard |
| Program Memory (Flash) | 3.5 KB (2K x 14) |
| Data RAM | 128 bytes |
| Data EEPROM | 256 bytes |
| 最大時脈頻率 | 20 MHz |
| 工作電源電壓 | 1.8 V to 3.6 V |
| ADC | 8 channels, 8-bit resolution |
| Number of I/Os | 25 I/O |
| 資料匯流排寬度 | 8 bit |
| 工作溫度 | -40 °C to +85 °C (Industrial) |
| 安裝方式 | Through Hole |
| 封裝 / 外殼 | SPDIP-28 (0.300", 7.62 mm) |
| Packaging | Tube |
| Timers | 2 × 8-bit + 1 × 16-bit |
| PWM / CCP | 1 × ECCP + 1 × CCP |
| Communication Peripherals | EUSART, MSSP (I²C/SPI) |
| Low-Power Technology | nanoWatt XLP™ |
| Programming Method | ICSP (In-Circuit Serial Programming) |
| RoHS 狀態 | Compliant |
PIC16LF722-I/SP 腳位配置
| 腳位 1 | RA5/AN4/SS/HLVDIN/T1CKI/CCP1/P1A — Port A bit 5 (digital I/O, ADC ch4, Slave Select, HLVD input, T1CKI, CCP1/PWM) |
| 腳位 2 | RA0/AN0/CVREF/ULPWU — Port A bit 0 (digital I/O, ADC ch0, comparator Vref output, ultra-low-power wake-up) |
| 腳位 3 | RA1/AN1/C1IN0-/C2IN0-/VREF- — Port A bit 1 (digital I/O, ADC ch1, comparator input, negative Vref) |
| 腳位 4 | RA2/AN2/C1IN1+/C2IN1+/VREF+/CVREF+ — Port A bit 2 (digital I/O, ADC ch2, comparator input, positive Vref) |
| 腳位 5 | RA3/AN3/C1IN2-/C2IN2-/VREF+ — Port A bit 3 (digital I/O, ADC ch3, comparator input, positive Vref) |
| 腳位 6 | RA4/AN4/T0CKI/C1OUT/CCP2 — Port A bit 4 (digital I/O, ADC ch4, T0CKI, comparator output, CCP2) |
| 腳位 7 | RA5/MCLR/VPP/RE3 — Master Clear (active-low reset) / Programming voltage |
| 腳位 8 | VSS — Ground reference |
| 腳位 9 | RB0/AN12/CCP2/INT — Port B bit 0 (digital I/O, ADC ch12, CCP2, external interrupt) |
| 腳位 10 | RB1/AN10/C1IN3-/C2IN3-/P1C — Port B bit 1 (digital I/O, ADC ch10, comparator input, PWM output) |
| 腳位 11 | RB2/AN8/C1IN2-/C2IN2-/P1B — Port B bit 2 (digital I/O, ADC ch8, comparator input, PWM output) |
| 腳位 12 | RB3/AN9/C1IN1+/C2IN1+/C1OUT/P1D — Port B bit 3 (digital I/O, ADC ch9, comparator input, comparator output, PWM output) |
| 腳位 13 | RB4/AN11/SDI/SDA — Port B bit 4 (digital I/O, ADC ch11, SPI data in, I²C data) |
| 腳位 14 | RB5/AN13/SDO — Port B bit 5 (digital I/O, ADC ch13, SPI data out) |
| 腳位 15 | RB6/PGC/ICSPCLK — Port B bit 6 / ICSP clock (programming/debug) |
| 腳位 16 | RB7/PGD/ICSPDAT — Port B bit 7 / ICSP data (programming/debug) |
| 腳位 17 | RC0/T1OSO/T1CKI — Port C bit 0 (digital I/O, Timer1 oscillator output / T1CKI) |
| 腳位 18 | RC1/T1OSI/CCP2 — Port C bit 1 (digital I/O, Timer1 oscillator input, CCP2) |
| 腳位 19 | RC2/CCP1/P1A — Port C bit 2 (digital I/O, CCP1, PWM output) |
| 腳位 20 | RC3/SCK/SCL — Port C bit 3 (digital I/O, SPI clock, I²C clock) |
| 腳位 21 | RC4/SDI/SDA — Port C bit 4 (digital I/O, SPI data in, I²C data) |
| 腳位 22 | RC5/SDO — Port C bit 5 (digital I/O, SPI data out) |
| 腳位 23 | RC6/TX/CK/AN6 — Port C bit 6 (digital I/O, USART TX, USART clock, ADC ch6) |
| 腳位 24 | RC7/RX/DT/AN7 — Port C bit 7 (digital I/O, USART RX, USART data, ADC ch7) |
| 腳位 25 | RE0/AN5 — Port E bit 0 (digital I/O, ADC ch5) |
| 腳位 26 | RE1/AN6 — Port E bit 1 (digital I/O, ADC ch6) |
| 腳位 27 | RE2/AN7 — Port E bit 2 (digital I/O, ADC ch7) |
| 腳位 28 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
典型應用
PIC16LF722-I/SP 適用於 6 應用s: Battery-Powered Sensor Nodes, Smoke and CO Detectors, Electronic Shelf Labels (ESL), Smart Thermostats, Industrial Sensor Front-Ends, Remote Control Transmitters.
Battery-Powered Sensor Nodes
The PIC16LF722-I/SP is ideal for battery-powered sensor nodes thanks to its nanoWatt XLP Sleep current of <1 µA, integrated 8-channel 8-bit ADC, and 1.8 V to 3.6 V supply range that supports single-cell Li-ion or two AA cells directly. In a duty-cycled temperature/humidity sensor, the MCU wakes periodically via the Watchdog Timer, reads the ADC, transmits over EUSART or MSSP (I²C/SPI), and returns to Sleep. Compared to a 3.3 V LDO+buck architecture, the wide supply tolerance eliminates a regulator stage and the XLP Sleep current enables multi-year coin-cell operation per Microchip TB3010.
推薦
Smoke and CO Detectors
The PIC16LF722-I/SP suits smoke and CO detector designs because its 1.8 V to 3.6 V supply works directly from a 9 V battery or two AAs, its 25 GPIO drive a piezo buzzer and LED array, and its analog comparator with internal FVR provides 1.024 V ratiometric reference for the CO sensor. The ECCP module generates PWM for a horn-driver stage. Sleep current below 1 µA per the Microchip XLP datasheet extends the detector's sealed-battery life to 10 years, and the -40 °C to +85 °C industrial grade supports attic and garage installations.
推薦
Electronic Shelf Labels (ESL)
ESL designs use the PIC16LF722-I/SP because the XLP Sleep current drops the average consumption to a few µA, allowing the coin cell to last the 5-10 year product lifetime. The MCU reads temperature via the 8-bit ADC, drives a low-power E-Ink display through the ECCP PWM, and wakes on a button or RF event via the EUSART. The 1.8 V minimum supply lets the design run directly from a CR2032 without a boost converter, eliminating BOM cost and reducing PCB area compared to a typical PIC16LF1902 + boost design.
推薦
Smart Thermostats
In a thermostat design, the PIC16LF722-I/SP serves as the user-interface and display controller. The 25 GPIO drive buttons and the LCD interface, the 8-bit ADC reads the thermistor temperature sensor, the MSSP (I²C) master connects to the HVAC relay module, and the EUSART talks to the main Wi-Fi co-processor. The 1.8 V to 3.6 V supply allows shared power with the Wi-Fi module rail. The -40 °C to +85 °C industrial temperature grade handles wall-mount thermal environments where some controllers run 50 °C above ambient.
推薦
Industrial Sensor Front-Ends
The PIC16LF722-I/SP works in industrial 4 mA to 20 mA loop-powered sensor front-ends because its 1.8 V minimum supply lets it run directly from a 24 V loop through a series diode and small LDO. The on-chip 16-bit timer captures pulse widths for flow and level sensors, the ADC reads 4 mA to 20 mA loop current, and the EUSART transmits HART-style data. The -40 °C to +85 °C grade and the nanoWatt XLP technology reduce loop burden; the SPDIP-28 package simplifies through-hole board service for industrial OEMs.
推薦
Remote Control Transmitters
Remote controls benefit from the PIC16LF722-I/SP's Sleep-mode current, integrated 8-bit ADC for battery voltage monitoring, and PWM capability for IR LED drive. The device wakes from Sleep when a key is pressed, transmits via EUSART PWM-modulated IR, and returns to Sleep. The 1.8 V to 3.6 V range enables single-CR2032 operation, eliminating the boost converter common in older designs. The ECCP module generates a 38 kHz carrier for the IR LED; the 16-bit timer measures button-hold timing. Per Microchip XLP datasheet figures, Sleep current <1 µA enables 5-year battery life.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16LF722-I/SP — 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 | PIC16LF722-I/SO | PIC16LF722-I/ML | PIC16LF722A-I/SP | PIC16LF722A-E/SP | PIC16LF720-I/P |
|---|---|---|---|---|---|---|
| Package | SPDIP-28 (0.300") | SOIC-28 wide - same pinout, SMD | QFN-28 (6x6 mm) - SMD, different footprint | SPDIP-28 - identical footprint | SPDIP-28 - identical footprint | SPDIP-28 - identical footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 3.5 KB (2K x 14) | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 1.75 KB (-50%) |
| Data RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 64 bytes (-50%) |
| Operating Voltage | 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 3.6 V | 1.8 V to 3.6 V |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Temperature Grade | Industrial -40 °C to +85 °C | Industrial -40 °C to +85 °C | Industrial -40 °C to +85 °C | Industrial -40 °C to +85 °C | Extended -40 °C to +125 °C | Industrial -40 °C to +85 °C |
| Silicon Revision | Original | Original | Original | 'A' revision - improved ADC and lower Sleep | 'A' revision - extended temp | Original (lower-memory sibling) |
| Approx. 1-piece Price (USD) | 2.51 | 2.40 | 2.45 | 2.85 | 3.10 | 2.20 |
主要差異化特點
- Pin-compatible 'A' silicon upgrade path (對比PIC16LF722A-I/SP)
- Surface-mount variants in same die (對比PIC16LF722-I/ML (QFN-28))
- Lower-memory sibling available for cost-down (對比PIC16LF720-I/P (SPDIP-28))
設計說明
Take advantage of nanoWatt XLP Sleep-mode current (typically <1 µA) for battery-powered designs. Configure Sleep via the SLPEN bit and select the deep-sleep variant (DSBOR, DSWDT) to reach sub-microamp sleep. Estimated run-mode current at 1 MHz / 2 V is approximately 50 µA based on Microchip TB3010 typical-conditions curves. Use the internal 16 MHz HFINTOSC to avoid crystal start-up current spikes on each wake-up.
Place 100 nF X7R decoupling capacitors between each VDD (pin 1 and pin 28) and VSS (pin 8 and pin 19) within 5 mm of the package leads. For ADC accuracy keep analog traces short and away from PWM/CCP switching traces; if using the 1.024 V internal FVR, add 0.1 µF + 10 µF decoupling at the FVR pin per the Microchip datasheet layout guidance.
Do NOT assume the ICSP programming pins (RB6/PGMCLK and RB7/PGMDAT) are free GPIO - they are required for in-circuit serial programming and ICD debugging. Always include a 6-pin ICSP header on prototype boards. When migrating from PIC16F722 to PIC16LF722 verify that your firmware does not rely on the wider 5 V analog range, since the LF part's ADC references are limited to VDD ≤ 3.6 V.
The MSSP (I²C/SPI) peripheral shares pins with the PORTB and PORTC GPIO; configure the PPS (Peripheral Pin Select) mapping carefully when multiple digital peripherals are active. For SPI at 5 MHz and above, add 33 Ω series resistors near the MCU SCK/SDO pins to dampen reflections. Ensure the EUSART TX output is sized to drive the cable in industrial EIA-485 applications.
合規資訊
RoHS compliant per Microchip product page; industrial temperature grade (-40C to +85C), not AEC-Q100 qualified (choose Q-grade automotive variants for automotive applications). Conflict-minerals statement published by Microchip per Dodd-Frank Section 1502.
