PIC16C77-04I/P - 8-Bit OTP MCU 14KB 4MHz 40-PDIP | Microchip
料号： PIC16C77-04I/P ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $11.2 | $11.20 |
| 10 | $9.95 | $99.50 |
| 100 | $8.4 | $840.00 |
| 500 | $7.1 | $3,550.00 |
| 1,000 | $6.05 | $6,050.00 |
PIC16C77-04I/P 概述
A PIC16C microcontroller is a member of Microchip's PIC (Peripheral Interface Controller) family of RISC-based 8-bit microcontrollers, sitting within the mid-range PIC16 hierarchy. It belongs to the broader category of microcontrollers -> embedded processors -> semiconductor ICs. The '16C' suffix indicates CMOS One-Time Programmable (OTP) EPROM program memory, distinguishing it from the flash-based PIC16F family and the ROM-based PIC16CR family. PIC16C7x parts were among the first mid-range PICs to integrate on-chip ADC, freeing designs from external analog conversion.
Key features include 35 single-word instructions (single-cycle except program branches which take two cycles), 8-level deep hardware stack, 14-bit instruction word, an operating voltage range of 4.0V to 5.5V, and an industrial temperature range of -40C to +85C (denoted by the 'I' suffix). The 40-pin PDIP package is a through-hole form factor suitable for development, prototyping, educational kits, and legacy production systems that require socketed devices for field replacement.
Technical depth: the part uses a Harvard architecture with separate program and data buses, allowing instruction fetch to overlap with data access. The RISC-style instruction set keeps most operations single-cycle, so throughput at 4MHz is approximately 4 MIPS. On-chip peripherals include a USART for serial communication, MSSP (Master Synchronous Serial Port) for SPI/I2C, and 8 channels of 8-bit ADC for sensor interfacing. The industrial-grade temperature range and OTP memory make this part well-suited to medium-volume production where Flash reprogrammability is not required.
Typical applications include industrial control systems, HVAC controllers, motor control front-ends, sensor signal conditioning, embedded instrumentation, and educational/hobbyist microcontroller boards. The on-chip ADC and PWM peripherals suit closed-loop feedback designs such as temperature controllers and small DC motor drivers.
When designing with this part, note that OTP memory cannot be erased or reprogrammed - firmware must be 100% verified before programming. Engineers should consider the newer PIC16F77 (Flash-based) for new designs, or PIC16C77-04/PQ / 04/L variants if a different package is needed while preserving pinout compatibility within the family.
This page synthesizes distributor pricing, same-family drop-in alternatives, and design considerations not found on the manufacturer datasheet front page.
直接替换替代料： PIC16C77-04I/P ——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： PIC16C77-04I/P （相同外形与封装尺寸） ——差异在于 Core Architecture, Timers, Package, Operating Temperature, Mounting Type.
快速对比工具——选择替代料号进行并排对比：
PIC16F77-I/P
✅ 直接替换✓ 有现货
$8.4 / 个
查看数据手册 →PIC16C77-04/PT
✅ 直接替换✓ 有现货
$6.08 / 个
查看数据手册 →PIC16C765-I/P
✅ 直接替换✓ 有现货
$5.1 / 个
查看数据手册 →PIC16C74B-04I/P
✅ 直接替换✓ 有现货
$5.55 / 个
查看数据手册 →PIC16C77-04I/P 最大额定值与电气特性
| Core Architecture | PIC (8-bit RISC, Harvard) |
| Family | PIC16C7x (mid-range) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 14 KB (8K x 14 words) |
| RAM | 368 bytes |
| 最大时钟频率 | 4 MHz |
| Instruction Cycle Time | 200 ns |
| 电源电压 | 4.0 V to 5.5 V |
| Number of I/O Pins | 33 |
| ADC | 8 channels, 8-bit |
| Timers | 1 x 8-bit, 1 x 16-bit (via CCP) |
| CCP Modules | 2 |
| Serial Interfaces | USART, MSSP (SPI/I2C) |
| 工作温度 | -40 C to +85 C (Industrial, 'I' suffix) |
| 封装 | 40-pin PDIP (Plastic DIP, 0.600 in / 15.24 mm) |
| 引脚数量 | 40 |
| 安装类型 | Through-Hole (THT) |
| Lead-Free / RoHS | Lead-free per Microchip product page; RoHS compliance varies by date code |
PIC16C77-04I/P 引脚配置
| 引脚 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| 引脚 2 | RA0/AN0 — Port A bit 0 / Analog input channel 0 |
| 引脚 3 | RA1/AN1 — Port A bit 1 / Analog input channel 1 |
| 引脚 4 | RA2/AN2 — Port A bit 2 / Analog input channel 2 |
| 引脚 5 | RA3/AN3/VREF — Port A bit 3 / Analog input channel 3 / VREF+ |
| 引脚 6 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| 引脚 7 | RA5/AN4/SS — Port A bit 5 / Analog input channel 4 / SPI slave select |
| 引脚 8 | RE0/RD/AN5 — Port E bit 0 / Parallel port read / Analog input channel 5 |
| 引脚 9 | RE1/WR/AN6 — Port E bit 1 / Parallel port write / Analog input channel 6 |
| 引脚 10 | RE2/CS/AN7 — Port E bit 2 / Parallel port chip select / Analog input channel 7 |
| 引脚 11 | VDD — Positive supply voltage (5V) |
| 引脚 12 | VSS — Ground reference |
| 引脚 13 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| 引脚 14 | OSC2/CLKOUT — Crystal oscillator output / clock output (Fosc/4) |
| 引脚 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| 引脚 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / CCP2 module |
| 引脚 17 | RC2/CCP1 — Port C bit 2 / CCP1 module (PWM/Capture/Compare) |
| 引脚 18 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| 引脚 19 | RD0/PSP0 — Port D bit 0 / Parallel Slave Port bit 0 |
| 引脚 20 | RD1/PSP1 — Port D bit 1 / Parallel Slave Port bit 1 |
| 引脚 21 | RD2/PSP2 — Port D bit 2 / Parallel Slave Port bit 2 |
| 引脚 22 | RD3/PSP3 — Port D bit 3 / Parallel Slave Port bit 3 |
| 引脚 23 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| 引脚 24 | RC5/SDO — Port C bit 5 / SPI data out |
| 引脚 25 | RC6/TX/CK — Port C bit 6 / USART TX / USART clock |
| 引脚 26 | RC7/RX/DT — Port C bit 7 / USART RX / USART data |
| 引脚 27 | RD4/PSP4 — Port D bit 4 / Parallel Slave Port bit 4 |
| 引脚 28 | RD5/PSP5 — Port D bit 5 / Parallel Slave Port bit 5 |
| 引脚 29 | RD6/PSP6 — Port D bit 6 / Parallel Slave Port bit 6 |
| 引脚 30 | RD7/PSP7 — Port D bit 7 / Parallel Slave Port bit 7 |
| 引脚 31 | VSS — Ground reference |
| 引脚 32 | VDD — Positive supply voltage (5V) |
| 引脚 33 | RB0/INT — Port B bit 0 / External interrupt |
| 引脚 34 | RB1 — Port B bit 1 |
| 引脚 35 | RB2 — Port B bit 2 |
| 引脚 36 | RB3/PGM — Port B bit 3 / Low-voltage programming |
| 引脚 37 | RB4 — Port B bit 4 |
| 引脚 38 | RB5 — Port B bit 5 |
| 引脚 39 | RB6/PGC — Port B bit 6 / ICSP clock |
| 引脚 40 | RB7/PGD — Port B bit 7 / ICSP data |
典型应用
PIC16C77-04I/P 适用于 6 应用s: Industrial Process Control, HVAC Climate Controllers, Small DC Motor and Stepper Control, Educational and Hobbyist Microcontroller Boards, Sensor Signal Conditioning Front-Ends, Legacy Embedded Instrumentation.
Industrial Process Control
The PIC16C77-04I/P fits industrial process control applications because of its 8-channel 8-bit ADC for sensor interfacing (thermistors, pressure transducers, flow meters), 33 digital I/O pins for actuator and relay driving, and USART for SCADA or HMI panel communication. The industrial -40C to +85C temperature range handles factory floor environments. Its 4 MIPS throughput at 4 MHz is adequate for PID loop calculations at 100 Hz sample rates, while the 14KB OTP program memory stores control tables, calibration constants, and state machines. Unlike the flash-based PIC16F77, the OTP memory prevents field tampering of calibration data in safety-critical loops.
推荐
HVAC Climate Controllers
HVAC controllers benefit from the PIC16C77-04I/P's combination of 8 ADC channels (for temperature, humidity, and pressure sensors), PWM-capable CCP modules (for damper and valve actuator control), and a USART for connection to building management systems via Modbus or BACnet gateways. The 4 MHz clock is more than sufficient for thermostat loop times of 1-10 seconds. The 14KB program memory stores scheduling, setpoint profiles, and fault logging, while the industrial temperature range handles equipment-room environments. The OTP memory ensures firmware stability once deployed.
推荐
Small DC Motor and Stepper Control
The PIC16C77-04I/P's two CCP modules generate PWM outputs for driving small DC motors, fans, or unipolar stepper motors via simple MOSFET bridges. With 4 MIPS throughput and 33 I/O pins, it can manage H-bridge direction logic, current sensing via the ADC, and quadrature encoder feedback via external interrupt pins. The 8-channel ADC allows multiple motor currents or position sensors to be sampled sequentially. The OTP memory locks in calibration data such as current trip thresholds and acceleration ramps.
推荐
Educational and Hobbyist Microcontroller Boards
The PIC16C77-04I/P in 40-pin PDIP is ideal for educational microcontroller courses and hobbyist projects due to its through-hole package (easy to breadboard and socket), 40 pins providing ample I/O for learning, and well-documented PIC16 mid-range architecture taught in many university curricula. The 4 MHz ceramic resonator is forgiving for first-time clock bring-up. The 14KB program memory supports substantial student projects while the 35-instruction RISC instruction set is approachable for assembly learners. Students can migrate to PIC16F77 for in-circuit reprogrammability.
推荐
Sensor Signal Conditioning Front-Ends
Sensor front-end designs use the PIC16C77-04I/P's 8-channel 8-bit ADC for digitizing multiple analog sensors, USART for sending processed data to a host controller or PC, and 33 I/O pins for MUX switching or digital sensor selection. With 4 MIPS, the part can run basic linearization, averaging, and alarm threshold algorithms in firmware. The industrial temperature range suits outdoor sensor installations, while the OTP memory prevents inadvertent firmware modifications in deployed units. PIC16F77-I/P is recommended for new designs needing firmware updates.
推荐
Legacy Embedded Instrumentation
Maintaining legacy industrial instruments originally designed around PIC16C77-04I/P requires continued supply of this NRND part. The MCU's 33 I/O pins, USART for data output, and 8-channel ADC suit bench-top multimeters, panel meters, and process calibrators from the late 1990s. The OTP memory is acceptable for fixed-function instruments that never required firmware updates. For new instrumentation designs, PIC16F877A-I/P (40-pin PDIP, Flash, more memory) is the recommended Microchip migration path with same pinout and broader peripheral set.
推荐
推荐产品汇总
工程参考数据： PIC16C77-04I/P ——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 | PIC16F77-I/P | PIC16C77-04/P | PIC16C765-I/P | PIC16C74B-04I/P |
|---|---|---|---|---|---|
| Package | 40-pin PDIP | 40-pin PDIP (same) | 40-pin PDIP (same) | 40-pin PDIP (same) | 40-pin PDIP (same) |
| Brand | Microchip Technology | Microchip Technology (same) | Microchip Technology (same) | Microchip Technology (same) | Microchip Technology (same) |
| Program Memory | 14 KB OTP | 14 KB Flash | 14 KB OTP | 14 KB OTP | 4 KB OTP |
| Maximum Clock | 4 MHz | 20 MHz | 4 MHz | 4 MHz | 4 MHz |
| RAM | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 192 bytes |
| Memory Type | OTP EPROM | Flash (reprogrammable) | OTP EPROM | OTP EPROM | OTP EPROM |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| ADC Channels | 8 channels, 8-bit | 8 channels, 8-bit | 8 channels, 8-bit | 8 channels, 8-bit | 8 channels, 8-bit |
| Special Features | 33 I/O, USART, MSSP, 2 CCP | Same + Flash reprogrammability | Same peripherals | Same + USB 1.1 SIE, fewer I/O (24) | Same peripherals, less memory |
关键差异点
- Industrial temperature range (-40C to +85C) in standard speed grade （对比 PIC16C77-04/P)
- Recommended modern replacement is pin-compatible （对比 PIC16F77-I/P)
- Higher memory configuration in same package （对比 PIC16C74B-04I/P)
设计说明
OTP memory is one-time programmable - firmware must be 100% verified before programming, as mistakes cannot be erased. For development cycles, prototype with PIC16F77 (Flash) on the same PCB footprint, then move to PIC16C77-04I/P for production. A common pitfall is assuming the BOR (brown-out reset) voltage threshold matches the minimum VDD of 4.0V exactly - in practice it can vary, so design VDD to stay above 4.2V under all load conditions if BOR is enabled. The 'I' suffix denotes industrial -40C to +85C; commercial 'PIC16C77-04/P' without 'I' is 0C to +70C only.
Power supply decoupling requires a 0.1 uF ceramic capacitor placed within 5 mm of each VDD pin (pins 11 and 32 on PDIP-40), plus a bulk 10 uF electrolytic or tantalum on the main VDD rail. According to the PIC16C7X datasheet, VSS pins (12 and 31) should be tied to a low-impedance ground plane. For noise-sensitive ADC applications, an additional LC filter on AVdd (when implemented as separate analog supply) is recommended. Power-on reset (POR) requires VDD rise time below a specified threshold; if the rise is slower, use the MCLR pin with an external RC delay.
The 40-pin PDIP package at 0.600 inch row spacing (15.24 mm) suits through-hole PCB design with 2.54 mm (0.1 inch) pitch. For prototyping, use a 40-pin DIP socket (machined-pin preferred for reliability). When migrating to surface-mount, PIC16C77-04I/PT (TQFP-44) or PIC16C77-04I/L (PLCC-44) are footprint-compatible within the family but require PCB redesign. The crystal oscillator traces (OSC1/OSC2) should be kept short and surrounded by ground; for 4 MHz operation, ceramic resonators with built-in capacitors are a cost-effective alternative to crystals.
合规信息
Lead-free and RoHS compliant per Microchip product page. Not AEC-Q100 qualified - for automotive applications consider PIC16F77-E/P or PIC18F variants with automotive qualification. Halogen-free status not explicitly stated in provided data.
