PIC16F877A-I/P - 8-Bit 20MHz 14KB Flash MCU | Microchip
料号： PIC16F877A-I/P ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.9394 | $2.94 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
PIC16F877A-I/P 概述
A microcontroller is a programmable integrated circuit that combines a CPU core, nonvolatile program memory, data memory, input/output ports, and peripherals on one package. The PIC16F877A-I/P belongs to the PIC16 family, where Flash program memory allows firmware to be reprogrammed without removing the device. Its DIP-40 package also supports breadboards, prototyping boards, through-hole assembly, and repair workflows where a socketed component is useful.
The verified source data identifies 14 KB of Flash, 368 bytes of RAM, 33 I/O pins, 8-bit processing, and a 20 MHz maximum clock indication. The product family also supports communication and control peripherals described in the manufacturer material, including timer/counter resources, capture/compare/PWM functions, serial interfaces, and an analog-to-digital converter. Exact voltage range, ADC resolution, timer quantities, and electrical timing values are not present in the supplied verified extract and must be checked in the manufacturer datasheet before production release.
PIC16F877A-I/P is commonly selected for cost-sensitive embedded controllers, data-acquisition systems, instrumentation, educational platforms, and legacy industrial equipment. The 40-pin DIP footprint simplifies prototype replacement, while the 33-pin I/O budget supports multiple digital inputs and outputs around a control core. Firmware development should account for the PIC16 instruction set and verify timing at the selected oscillator or external-clock configuration.
The main design consideration is package and lifecycle validation. The part is presented by distributors as purchasable, but current stock, price, and lifecycle status should be checked at procurement. A replacement must be reviewed for pinout, memory, clock, supply voltage, peripheral mapping, programming-tool support, and firmware compatibility rather than selected by MPN similarity alone. The verified LCSC snippet shows an in-stock listing and a price from $2.9394, while exact tiered pricing is not supplied.
This product record combines the verified manufacturer and distributor facts with explicitly marked data gaps. It also separates confirmed same-package alternatives from broader functional replacements, so engineers can make a grounded drop-in decision instead of assuming that a different MCU with similar advertised features is electrically interchangeable.
直接替换替代料： PIC16F877A-I/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： PIC16F877A-I/P （相同外形与封装尺寸） ——差异在于 Package, Program Memory Type, ADC, Timers, Mounting Type.
快速对比工具——选择替代料号进行并排对比：
PIC16F887A-I/P
✅ 直接替换📋 参考替代料（不在目录中）
PIC16F877A-I/P
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →PIC16F877A-I/P 最大额定值与电气特性
| Product Type | 8-bit CMOS Flash PIC microcontroller |
| 最大时钟频率 | 20 MHz |
| Instruction Execution Time | 200 ns |
| Program Memory | 14 KB Flash |
| Data Memory | 368 bytes RAM |
| I/O Pin Count | 33 pins |
| 封装 | 40-pin plastic DIP (PDIP) |
| Architecture | PIC 8-bit architecture |
| Programmable Instruction Set | 35 single-word instructions |
| Memory Technology | CMOS Flash |
| 安装类型 | Through-hole DIP |
PIC16F877A-I/P 40-pin plastic dip (pdip) 引脚配置指南
PIC16F877A-I/P（40-pin plastic dip (pdip) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： PIC16F877A-I/P.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PIC16F877A-I/P 适用于 6 应用s: Legacy Industrial Control, Data Acquisition and Instrumentation, Educational Embedded Systems, Motor and Relay Control, Communication Interface Controller, Appliance and Embedded Product Control.
Legacy Industrial Control
PIC16F877A-I/P fits legacy industrial control prototypes that need an 8-bit controller, 20 MHz indicated operation, 14 KB of Flash, and 33 I/O pins in a socketed 40-pin DIP. Its DIP format makes it practical to service boards without redesigning the footprint. The design should be conditioned on the exact supply voltage, temperature, reset, and peripheral requirements in the manufacturer datasheet.
推荐
Data Acquisition and Instrumentation
PIC16F877A-I/P is a reasonable candidate for compact instrumentation controllers where a microcontroller must coordinate digital inputs, timers, communications, and control outputs. The verified 20 MHz indication and 14 KB Flash provide a useful performance and memory envelope for moderate embedded workloads. Exact ADC resolution, channel count, analog input limits, and acquisition timing must be confirmed before selecting analog front-end circuitry.
推荐
Educational Embedded Systems
The 40-pin DIP package of PIC16F877A-I/P is well suited to breadboards, solderless training boards, and educational controller kits because it is easy to insert, remove, and replace. Its 8-bit architecture and 35 single-word instruction set make it approachable for learning digital I/O, timing, interrupts, and serial communication. A migration to a smaller MCU may improve board density later, but it changes the learning platform and often the firmware porting workload.
推荐
Motor and Relay Control
PIC16F877A-I/P can serve as the supervisory controller in relay, motor, or actuator-control boards because 33 I/O pins provide substantial digital headroom and the 20 MHz indication supports event-driven firmware. It is appropriate when the system needs multiple discrete control signals and legacy DIP repairability. Power devices, protection networks, isolation, and timing margins must be designed separately; the MCU output ratings and application limits are [DATA_NEEDED].
推荐
Communication Interface Controller
PIC16F877A-I/P is applicable to older communication-control boards that need programmable digital interfaces and configurable timing around a simple 8-bit CPU. The verified family description identifies serial-capable resources, while the exact UART, SPI, I2C, and CAN-related details are [DATA_NEEDED] in the supplied extract. Engineers should verify protocol support, pin multiplexing, baud-rate accuracy, and firmware compatibility before replacing a communications controller.
推荐
Appliance and Embedded Product Control
PIC16F877A-I/P is suitable for cost-sensitive appliance or embedded-product controllers where a through-hole DIP package, Flash re-programmability, and 33 I/O pins simplify prototype assembly and field replacement. Its 14 KB program space and 368 bytes RAM fit moderate supervisory logic, but they may limit complex UI, logging, or multi-protocol designs. Confirm operating temperature and regulatory requirements separately before production use.
推荐
推荐产品汇总
工程参考数据： PIC16F877A-I/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 | PIC16F877A-I/PT | PIC16F887A-I/P | PIC16F877A-I/SO | PIC16F877A-I/ML |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin PDIP | 44-pin TQFP | 40-pin DIP | 40-pin SOIC | 44-pin TQFP |
关键差异点
- Confirmed 40-pin through-hole package （对比 PIC16F877A-I/PT)
- Verified 14 KB Flash and 368 bytes RAM （对比 PIC16F877A-I/SO)
- 20 MHz indicated performance with 200 ns instruction execution （对比 PIC16F887A-I/P)
- Legacy DIP repairability （对比 PIC16F877A-I/ML)
设计说明
Estimated package-fit check: because the verified target is a 40-pin PDIP, preserve the through-hole footprint, pin spacing, drill diameter, and connector clearance from the manufacturer mechanical drawing. Do not substitute a 44-pin TQFP, SOIC, or other surface-mount option without a PCB redesign. Confirm whether the board uses sockets and whether mechanical height and orientation matter.
The verified data does not provide the supply-voltage range or I/O absolute-maximum limits, so do not choose regulator values or input levels from memory. Before power-up, verify VDD tolerances, reset requirements, unused-pin handling, and I/O current limits in the manufacturer datasheet. Keep the MCU rail decoupling close to the device and provide a stable clock or oscillator arrangement matching the selected timing configuration.
The supplied search results mention PIC16F887 as a possible migration path, but family similarity does not prove a pin-to-pin or firmware-compatible replacement. Check the Microchip pin and code compatibility chart, device ID, configuration words, peripheral mapping, interrupt vectors, and programming tool support. A replacement that changes package or peripheral behavior should be treated as a redesign, not a drop-in substitution.
合规信息
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Do not infer compliance from distributor listings.
