PIC16C72-10I/SP - 8-bit OTP MCU, 3.5KB, 22 I/O, SPDIP-28 | Microchip
料号： PIC16C72-10I/SP ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.45 | $8.45 |
| 10 | $7.59 | $75.90 |
| 100 | $6.65 | $665.00 |
| 500 | $5.85 | $2,925.00 |
| 1,000 | $5.2 | $5,200.00 |
PIC16C72-10I/SP 概述
What is an 8-bit OTP microcontroller? An OTP (One-Time-Programmable) microcontroller embeds non-volatile program memory that can be written once, after which the bit pattern is permanent. These devices sit within the broader taxonomy: microcontroller -> embedded MCU -> 8-bit MCU -> RISC MCU -> PIC mid-range family. They are commonly used in cost-sensitive, high-volume production where firmware is finalized and code-update is not required, replacing older masked-ROM parts in industrial control, appliance, and instrumentation applications.
Key features include a 10 MHz oscillator input (200 ns instruction cycle), three timer modules (Timer0 with 8-bit prescaler, Timer1 16-bit, Timer2 8-bit with postscaler), a capture/compare/PWM (CCP) module, an 8-bit multichannel A/D converter, Brown-out Reset (BOR), and a watchdog timer. The device consumes very low power, making it suitable for mains-powered and battery-friendly designs.
The architecture is built on a Harvard-style memory map with separate program and data buses, allowing instruction fetch and operand access in a single cycle for most instructions. The CMOS process provides low quiescent current, supporting sleep and idle modes for power-aware designs. The 28-pin SPDIP footprint is a long-standing Microchip mid-range package, fully compatible with PIC16C71, PIC16C712, PIC16C715, PIC16C716, and PIC16F72 family members per Microchip's PinPack compatibility chart.
Typical applications include industrial control and sensor conditioning nodes, small consumer appliances, security and alarm panels, HVAC controllers, motor-drive interface boards, and instrumentation front ends. The on-chip ADC is well suited to potentiometer, thermistor, and 4-20 mA loop signal acquisition where a single-chip solution is preferred.
When designing with this part, ensure the 10 MHz clock signal is applied to OSC1 (pin 9) and the MCLR/VPP pin (pin 1) is tied through a pull-up resistor to VDD, since OTP parts cannot be reprogrammed and a clean reset is critical during in-system programming. This page synthesizes distributor pricing, cross-reference alternatives, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： PIC16C72-10I/SP ——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： PIC16C72-10I/SP （相同外形与封装尺寸） ——差异在于 Package, Timers, Core Architecture, ADC, Program Memory Type.
快速对比工具——选择替代料号进行并排对比：
PIC16C72-10/SP
✅ 直接替换✓ 有现货
$4.42 / 个
查看数据手册 →PIC16C72A-10I/SP
✅ 直接替换📋 参考替代料（不在目录中）
PIC16F72-I/SP
✅ 直接替换✓ 有现货
$1.92 / 个
查看数据手册 →PIC16C716-10I/P
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC16C72-10I/SO
✅ 直接替换✓ 有现货
$4.25 / 个
查看数据手册 →PIC16C72-10I/SP 最大额定值与电气特性
| Family | PIC16C7X mid-range 8-bit MCU |
| Program Memory Type | OTP (One-Time-Programmable) EPROM |
| Program Memory Size | 3.5KB (2K x 14 words) |
| Data RAM | 128 bytes |
| 最大时钟频率 | 10 MHz |
| Instruction Cycle | 200 ns (single-cycle except branches) |
| Supply Voltage (VDD) | 4.0 V to 5.5 V |
| I/O Pins | 22 |
| ADC | 8-bit multichannel (5 channels per datasheet) |
| Timers | Timer0 (8-bit + 8-bit prescaler), Timer1 (16-bit), Timer2 (8-bit + postscaler) |
| Capture/Compare/PWM | 1 x CCP module |
| Brown-out Reset (BOR) | Yes |
| Watchdog Timer | Yes (independent RC oscillator) |
| Hardware Stack | 8 levels |
| Interrupt Sources | Yes (multiple sources, vectored) |
| Oscillator Modes | RC, XT, HS, LP (4 modes) |
| 工作温度范围 | -40 C to +85 C (Industrial, "I" suffix) |
| 封装 | 28-pin SPDIP (0.300 inch, Plastic DIP) |
| 安装类型 | Through-Hole |
| Lead Finish | Matte Tin (Pb-free) |
| RoHS 状态 | Compliant |
| MSL 等级 | 1 (unlimited) |
| Manufacturing Process | CMOS |
| Programming Method | In-circuit serial programming (ICSP) |
PIC16C72-10I/SP 引脚配置
| 引脚 1 | MCLR/VPP — Master Clear (reset) input / programming voltage input |
| 引脚 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| 引脚 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| 引脚 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| 引脚 5 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / ADC reference |
| 引脚 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input (open-drain) |
| 引脚 7 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| 引脚 8 | VSS — Ground reference |
| 引脚 9 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| 引脚 10 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| 引脚 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| 引脚 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 output |
| 引脚 13 | RC2/CCP1 — PORTC bit 2 / Capture-Compare-PWM 1 output |
| 引脚 14 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| 引脚 15 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| 引脚 16 | RC5/SDO — PORTC bit 5 / SPI data out |
| 引脚 17 | RC6 — PORTC bit 6 |
| 引脚 18 | RC7 — PORTC bit 7 |
| 引脚 19 | VSS — Ground reference |
| 引脚 20 | VDD — Positive supply voltage (4.0V to 5.5V) |
| 引脚 21 | RB0/INT — PORTB bit 0 / external interrupt input |
| 引脚 22 | RB1 — PORTB bit 1 |
| 引脚 23 | RB2 — PORTB bit 2 |
| 引脚 24 | RB3 — PORTB bit 3 |
| 引脚 25 | RB4 — PORTB bit 4 |
| 引脚 26 | RB5 — PORTB bit 5 |
| 引脚 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| 引脚 28 | RB7/PGD — PORTB bit 7 / ICSP data |
典型应用
PIC16C72-10I/SP 适用于 7 应用s: Industrial Sensor Conditioning Node, Small Consumer Appliance Controller, Security and Alarm Panel Controller, HVAC Temperature and Fan Controller, Motor Drive Interface Board, Instrumentation Front-End Module, Automotive Interior Accessory Controller.
Industrial Sensor Conditioning Node
The PIC16C72-10I/SP is well suited for industrial sensor conditioning nodes where a single 8-bit MCU must read analog signals and drive digital actuators. The on-chip 8-bit ADC with five input channels handles potentiometer, thermistor, or 4-20 mA loop-derived voltages without external ADC hardware, while the 22 I/O pins are ample for keypad scanning, relay drivers, and LED indicators. Its 4.0-5.5V supply range suits standard 5V industrial rails, and the brown-out reset circuit prevents undefined behaviour during brown-out events. The -40 C to +85 C industrial temperature grade matches typical factory-floor environments. Power dissipation in the SPDIP-28 package is easily managed with no heatsink required.
推荐
Small Consumer Appliance Controller
The PIC16C72-10I/SP is widely used in small consumer appliances such as coffee makers, microwave oven control boards, washing-machine user interfaces, and rice cookers where a cost-optimized 8-bit MCU with on-chip ADC suffices. The 3.5KB OTP program memory holds typical appliance state machines and timing routines, while the 128 bytes of RAM track menu state and timing variables. The 200 ns instruction cycle ensures responsive control loop execution, and the CCP module drives PWM outputs for variable-speed or dimming loads. The 28-pin SPDIP through-hole package is friendly to wave-soldered production lines typical of appliance manufacturing.
推荐
Security and Alarm Panel Controller
The PIC16C72-10I/SP integrates well into security and alarm panel controller designs requiring analog sensor monitoring (PIR, smoke, gas detectors) and digital keypad/key-fob interface handling. The 8-bit multichannel ADC reads sensor voltages, while the 22 I/O pins drive sirens, relays, and indicator LEDs directly. The hardware watchdog timer (WDT) with independent RC oscillator ensures the panel recovers from firmware lockups, which is a regulatory requirement for many security-system certifications. The brown-out reset (BOR) feature prevents false alarms or missed events during power dips. The PIC's long-standing instruction set simplifies code reuse across security product families.
推荐
HVAC Temperature and Fan Controller
The PIC16C72-10I/SP serves as the central controller in HVAC temperature and fan-speed control modules. The on-chip ADC scans temperature sensors (NTC thermistors or IC sensors with analog output), the 16-bit Timer1 captures precise timing for triac-fired AC zero-crossing detection, and the CCP module generates PWM for variable-speed DC fans. The 35-instruction RISC core is small enough to learn quickly and large enough to implement PID loops for temperature regulation. Industrial temperature range ensures reliable operation in attic, basement, or outdoor-equipment enclosures. Brown-out reset protects the controller from compressor inrush-induced supply transients.
推荐
Motor Drive Interface Board
The PIC16C72-10I/SP functions as a low-cost motor drive interface board controller for brushed DC and stepper motors below 1A. The 22 I/O pins drive H-bridge enable lines, direction inputs, encoder feedback, and limit-switch inputs; the CCP module produces PWM speed control up to 10 kHz. Hardware interrupts on RB port change detect encoder index pulses, while the watchdog timer recovers the system from motor-induced EMI events. The 28-pin SPDIP form factor allows hand-solderable prototype boards and rework-friendly production. Power handling is delegated to external MOSFET drivers such as the TC4427.
推荐
Instrumentation Front-End Module
The PIC16C72-10I/SP is a strong fit for low-cost instrumentation front-end modules such as panel meters, digital thermometers, and data-acquisition peripherals. The 8-bit ADC with five input channels digitises sensor outputs at up to ~50 kS/s aggregate, suitable for temperature, humidity, and 4-20 mA loop readouts. The 22 I/O pins drive seven-segment displays, button matrices, or UART/SPI interfaces to upstream controllers. The 10 MHz maximum clock input delivers deterministic timing for UART baud-rate generation at standard rates (9600, 19200, 115200 bps). The OTP memory prevents firmware tampering in calibrated instruments. Brown-out reset ensures the display and serial link restart cleanly after power interruptions.
推荐
Automotive Interior Accessory Controller
The PIC16C72-10I/SP is sometimes used in automotive interior accessory controllers (non-safety, non-POWertrain roles such as ambient lighting, mirror adjusters, and climate control keypads). The on-chip ADC monitors potentiometer wipers for mirror position, while the 22 I/O pins drive LED strings, motors, and switch-matrix inputs. The industrial -40 C to +85 C temperature grade handles cabin-temperature extremes. Note that this OTP part is not AEC-Q100 qualified; for safety-critical or under-hood applications the PIC16F72 family in automotive grade (PIC16F72-I/SP and Q-version) is recommended. The 4.0-5.5V supply matches post-regulator 5V rails common in body-electronics modules.
推荐
推荐产品汇总
工程参考数据： PIC16C72-10I/SP ——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 | PIC16C72-10/SP | PIC16C72A-10I/SP | PIC16F72-I/SP | PIC16C716-10I/P | PIC16C72-10I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SPDIP-28 | SPDIP-28 - same | SPDIP-28 - same | SPDIP-28 - same | SPDIP-28 - same | SOIC-28 (surface-mount variant) |
| Program Memory Type | OTP EPROM (3.5KB) | OTP EPROM (3.5KB) | Enhanced OTP EPROM (3.5KB) | Flash (3.5KB) | OTP EPROM (2K x 14) | OTP EPROM (3.5KB) |
| Maximum Clock Frequency | 10 MHz | 10 MHz | 10 MHz | 20 MHz | 10 MHz | 10 MHz |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| ADC Resolution / Channels | 8-bit / 5 channels | 8-bit / 5 channels | 8-bit / 5 channels | 8-bit / 5 channels | 8-bit / 4 channels | 8-bit / 5 channels |
| In-Circuit Reprogrammable | No (OTP) | No (OTP) | No (OTP) | Yes (Flash, ICSP) | No (OTP) | No (OTP) |
| Approx. Unit Price (qty-1, USD) | $8.45 | $8.20 | $8.90 | $4.95 | $7.85 | $7.95 |
关键差异点
- Pin-to-pin compatible with Flash-based PIC16F72-I/SP （对比 PIC16F72-I/SP)
- Brown-out reset and watchdog timer integrated （对比 PIC16C711-04/P (earlier mid-range family))
- Captures, Compares, and 10-bit PWM in CCP1 module （对比 PIC16C71 (no CCP module))
设计说明
The PIC16C72-10I/SP operates from a single 4.0V to 5.5V VDD rail. Place a 100 nF ceramic decoupling capacitor as close as possible to pins 8/19 (VSS) and pin 20 (VDD), plus a 10 uF bulk capacitor near the supply pins if the VDD source is more than 50 mm away. Estimated: under typical 5V/5 mA active conditions, power dissipation is ~25 mW - well within the SPDIP-28 thermal envelope of approximately 700 mW absolute maximum.
Because the PIC16C72-10I/SP is OTP EPROM, the program memory cannot be erased after programming - any code bug becomes a permanent defect. Always program one or more sample units with final firmware and run full validation tests before committing the production lot. Also, ensure MCLR/VPP (pin 1) has a 10 kohm pull-up to VDD for normal operation; leaving it floating can cause erratic resets. For ICSP, this pin doubles as the VPP programming voltage input and must be driven to ~13V during programming.
Route the OSC1/OSC2 traces (pins 9 and 10) with short, symmetric lengths, surrounded by a ground guard ring, and keep them away from high-current switching traces. For HS oscillator mode with a 10 MHz crystal, use load capacitors per the crystal datasheet (typically 15-33 pF). For RC oscillator mode, place the timing resistor and capacitor as close to pins 9 and 10 as practical. The ICSP pins (RB6/PGC on pin 27 and RB7/PGD on pin 28) should be accessible via a 5-pin header for in-system programming without removing the MCU.
合规信息
RoHS-compliant per Microchip product page. Not AEC-Q100 qualified; for automotive designs, use the PIC16F72 family or Q-graded variants. Lead-free matte-tin finish. Halogen-free status not explicitly confirmed in available data.
