PIC16F726-I/SS - 8-Bit 20MHz XLP MCU, 14KB Flash, 28-SSOP | Microchip
料号： PIC16F726-I/SS ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.55 | $2.55 |
| 10 | $2.3 | $23.00 |
| 100 | $2.04 | $204.00 |
| 500 | $1.81 | $905.00 |
| 1,000 | $1.61 | $1,610.00 |
PIC16F726-I/SS 概述
An 8-bit microcontroller is a single-chip computer whose arithmetic logic unit, registers, and data bus all operate on 8-bit (one-byte) words. Within the broader taxonomy, the PIC16F726 sits in the PIC® mid-range family -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. Mid-range PIC devices use a Harvard RISC architecture that fetches instruction words and data from separate program/data buses, allowing single-cycle instruction execution (200ns at 20MHz) and deterministic timing for real-time control. This class of MCU is the workhorse for cost-sensitive consumer appliances, sensor front-ends, motor control, and battery-powered instruments where 32-bit Cortex-M cores would be over-spec and 4-bit controllers would be under-powered. The PIC16F726 specifically targets designs that need more program memory and peripherals than a PIC16F690 but less than a 64-pin PIC16F877A.
Key differentiating features include a 16MHz internal high-precision oscillator (factory calibrated to ±1%), eliminating external crystals in most designs; on-chip 10-bit ADC with up to 14 channels; a hardware 8-bit Timer0 plus two 16-bit Timer1/3 blocks; and nanoWatt XLP™ sleep modes with currents under 100 nA typical. The 28-SSOP (209-mil) footprint provides compact integration while remaining hand-solderable for prototyping and low-volume production.
Typical applications span industrial sensor conditioning, low-power remote controls, battery-backed metering, e-metering front ends, white-goods user interfaces, and small motor-driver controllers. Designers value the XLP sleep current because it lets products sleep on a CR2032 coin cell for 10+ years while still waking periodically to read sensors or service an SPI slave.
When laying out this part, route the VDD/VSS pair through a single bulk decoupling loop on the same board layer to keep the analog supply quiet. Add a 100nF ceramic decoupling cap directly between each VDD/VSS pair within 2mm of the pin, and route the MCLR pull-up near the IC. In noisy motor applications, place an additional 10uF tantalum or ceramic bulk capacitor adjacent to the device.
This page consolidates DigiKey distributor pricing, Mouser inventory, Microchip datasheet specifications, and validated drop-in same-package alternatives (PIC16F727-I/SS for LCD upgrade, PIC16F722-I/SS for lower Flash variant, PIC16F723-I/SS and PIC16F724-I/SS) not aggregated by manufacturer PDFs alone.
直接替换替代料： PIC16F726-I/SS ——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： PIC16F726-I/SS （相同外形与封装尺寸） ——差异在于 Package, Timers, ADC, Internal Oscillator, I/O Pins.
快速对比工具——选择替代料号进行并排对比：
PIC16F727-I/SS
✅ 直接替换📋 参考替代料（不在目录中）
PIC16F724-I/SS
✅ 直接替换📋 参考替代料（不在目录中）
PIC16F723-I/SS
✅ 直接替换📋 参考替代料（不在目录中）
PIC16F722-I/SS
✅ 直接替换✓ 有现货
$1.24 / 个
查看数据手册 →PIC16F726-I/SS 最大额定值与电气特性
| Core Architecture | PIC® mid-range 8-bit RISC |
| Instruction Set | 35 single-word instructions |
| Program Memory | 14 KB Flash (8K x 14 words) |
| Maximum Clock Speed | 20 MHz |
| Internal Oscillator | 16 MHz factory calibrated (±1%) |
| Instruction Cycle Time | 200 ns at 20 MHz |
| Supply Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 36 |
| Timers | Timer0 8-bit + Timer1/Timer3 16-bit |
| CCP Modules | 2 (Capture / Compare / PWM) |
| Serial Interfaces | 1x AUSART, 1x I²C™/SPI, 1x MSSP |
| Stack Depth | 8 levels hardware |
| 封装 | 28-pin SSOP (5.30mm / 209-mil) |
| 安装类型 | Surface Mount |
| 工作温度范围 | -40 °C to +85 °C (Industrial grade, "I" suffix) |
| 引脚数量 | 28 |
| RoHS 状态 | Compliant |
| Lead-Free Finish | Yes (Matte Tin, NiPdAu lead frame) |
PIC16F726-I/SS 引脚配置
| 引脚 1 | RA0/AN0 — Digital I/O / ADC input |
| 引脚 2 | RA1/AN1 — Digital I/O / ADC input |
| 引脚 3 | RA2/AN2/VREF- — Digital I/O / ADC input / negative voltage reference |
| 引脚 4 | RA3/AN3/VREF+ — Digital I/O / ADC input / positive voltage reference |
| 引脚 5 | RA4 — Digital I/O (open-drain option) |
| 引脚 6 | RA5/AN4 — Digital I/O / ADC input |
| 引脚 7 | RA6/OSC2/CLKOUT — Digital I/O / crystal output / clock output |
| 引脚 8 | RA7/OSC1/CLKIN — Digital I/O / crystal input / external clock input |
| 引脚 9 | VSS — Ground reference |
| 引脚 10 | VDD — Positive supply voltage (2.5V to 5.5V) |
| 引脚 11 | RB0/INT — Digital I/O / external interrupt |
| 引脚 12 | RB1 — Digital I/O |
| 引脚 13 | RB2 — Digital I/O |
| 引脚 14 | RB3/PGM — Digital I/O / low-voltage programming |
| 引脚 15 | RB4 — Digital I/O |
| 引脚 16 | RB5 — Digital I/O |
| 引脚 17 | RB6/PGC — Digital I/O / ICSP clock |
| 引脚 18 | RB7/PGD — Digital I/O / ICSP data |
| 引脚 19 | RC0 — Digital I/O |
| 引脚 20 | RC1 — Digital I/O |
| 引脚 21 | RC2 — Digital I/O |
| 引脚 22 | RC3 — Digital I/O |
| 引脚 23 | RC4 — Digital I/O |
| 引脚 24 | RC5 — Digital I/O |
| 引脚 25 | RC6 — Digital I/O |
| 引脚 26 | RC7 — Digital I/O |
| 引脚 27 | MCLR/RA3 — Master Clear reset (active low) / digital I/O |
| 引脚 28 | VSS — Ground reference |
典型应用
PIC16F726-I/SS 适用于 6 应用s: Battery-Powered Sensor Node, Industrial Sensor Conditioning, White-Goods User Interface (HMI), Low-Power Remote Control / IR Transmitter, Smart Meter / Utility Data Logger, Small BLDC / DC Motor Controller.
Battery-Powered Sensor Node
The PIC16F726-I/SS is ideal for battery-powered sensor nodes thanks to its nanoWatt XLP™ sleep current in the tens of nanoamperes, 14KB Flash for sensor-fusion firmware, and integrated 10-bit ADC with multiple input channels. At 3.0V from a CR2032 coin cell, the part sleeps under 100nA and wakes via Timer1 interrupt to service temperature, humidity, or motion sensors. The 20MHz core executes sensor-conditioning math in milliseconds, after which the device re-enters XLP sleep, giving designers 10+ year battery life on coin cells. The 28-SSOP footprint fits behind the coin-cell holder and pairs naturally with a sub-GHz radio daughter board.
推荐
Industrial Sensor Conditioning
In 4–20mA loop-powered transmitters and PLC analog front ends, the PIC16F726-I/SS supplies the local compute for linearization, scaling, and HART-style modulation. The 10-bit ADC (and configurable 8-bit mode) reads bridge/strain-gauge outputs directly, while the AUSART drives RS-485 transceivers at 115.2 kbaud. Two CCP channels deliver PWM excitation to bridge sensors, eliminating external DACs. Industrial-grade -40°C to +85°C operation tolerates factory-floor temperatures, and the 28-SSOP footprint handles reflow profiles typical of conformal-coated industrial boards.
推荐
White-Goods User Interface (HMI)
Washing machines, dishwashers, ovens, and induction cooktops rely on the PIC16F726-I/SS to drive 7-segment LED displays, scan capacitive touch buttons, and execute BLDC motor control loops. Two CCP channels produce PWM at up to 20kHz for motor commutation, while the AUSART links the main MCU to a secondary inverter board. The 14KB Flash accommodates user-interface state machines and IEC 60730 safety-class B self-test routines. Designers often upgrade to the PIC16F727-I/SS for direct segment-LCD drive on the same 28-SSOP footprint.
推荐
Low-Power Remote Control / IR Transmitter
Battery-powered TV remote controls, garage-door openers, and wireless key fobs use the PIC16F726-I/SS for matrix keypad scanning and RC5/SIRC/NEC IR protocol generation via CCP PWM. The XLP sleep current measured in nanoamps lets a typical key fob run 3+ years on a CR2032, waking only on a keypad interrupt. The 20MHz core generates 38kHz/40kHz/56kHz carrier frequencies accurately for IR LEDs. The 28-SSOP package provides a compact, hand-solderable solution for low-volume specialty products.
推荐
Smart Meter / Utility Data Logger
Electricity, water, and gas meters leverage the PIC16F726-I/SS for pulse counting from sensor outputs, RTC timestamping, and periodic data logging to EEPROM or external FRAM. The AUSART drives isolated RS-485 or wireless M-Bus modules, while nanoWatt XLP sleep modes let the meter idle between pulses at <1µA average current. The industrial temperature grade (-40°C to +85°C) handles outdoor meter enclosures, and 14KB Flash holds IEC 62056-21 metering protocols comfortably. The 28-SSOP package mounts easily on the meter's main PCB.
推荐
Small BLDC / DC Motor Controller
Toy drones, computer-case fans, and small appliances integrate the PIC16F726-I/SS as a low-cost motor controller. Two CCP channels deliver complementary PWM to MOSFET gate drivers, while Timer1 measures back-EMF zero-cross events for sensorless trapezoidal commutation. The 20MHz core executes field-oriented-control or six-step commutation loops at 20kHz PWM, fast enough for smooth 12V hobby motors. The 28-SSOP package is compact, and the 2.5V–5.5V range lets the MCU share the motor supply rail without a separate LDO.
推荐
推荐产品汇总
工程参考数据： PIC16F726-I/SS ——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 | PIC16F727-I/SS | PIC16F724-I/SS | PIC16F723-I/SS | PIC16F722-I/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Flash Memory | 14 KB | 14 KB (same) | 7 KB (-50%) | 7 KB (-50%) | 2 KB (-86%) |
| Maximum CPU Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| I/O Pins | 36 | 36 | 36 | 25 | 25 |
| LCD Driver Module | No | Yes (integrated) | Yes (integrated) | No | No |
| Internal Oscillator | 16 MHz (factory calibrated) | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
关键差异点
- Higher Flash density than PIC16F690/677 at the same 28-SSOP package （对比 PIC16F690-I/SS)
- Direct upgrade path to integrated LCD driver on same pinout （对比 PIC16F727-I/SS)
- Internal 16MHz ±1% factory-calibrated oscillator eliminates external crystal （对比 PIC16F877A-I/P)
设计说明
Decouple VDD/VSS with a 100nF ceramic capacitor placed within 2mm of the MCU pins, and add a bulk 10µF tantalum or ceramic cap adjacent to the device. The PIC16F726-I/SS nanoWatt XLP™ sleep current is rated in the nA range, so careful decoupling minimizes leakage and prevents accidental wake-up on supply noise.
Always terminate MCLR with a 10kΩ pull-up to VDD. For ICSP programming, add a diode-resistor network on MCLR (per Microchip ICD header reference) to allow in-circuit debugging without manual jumper removal. Forgetting the MCLR pull-up is the single most common reason a fresh PIC16F726 design refuses to start.
Route the VDD/VSS pair on the same board layer using a single bulk decoupling loop to maintain a clean analog supply. Place the 28-SSOP copper pour under the body for thermal relief; the 20MHz operation generates only minor heat, but a continuous ground plane improves ADC accuracy by reducing digital switching noise coupling.
Group analog inputs (RA0–RA5, RC0–RC7) on the side of the IC opposite the high-speed switching signals (CCP PWM, AUSART). This separation improves ADC SNR by up to 6dB in noisy motor-control layouts. Keep trace lengths for analog inputs under 30mm with a guard trace tied to ground.
合规信息
RoHS compliant per Microchip product page. Lead-free matte-tin finish over NiPdAu lead frame. Industrial temperature grade only - not AEC-Q100 automotive qualified; consider PIC16F726-I/SS_V01 or Q1 variants for automotive.
