PIC16C770-E/P - 8-Bit 20MHz 3.5KB OTP MCU 20-PDIP | Microchip
MPN: PIC16C770-E/P ✓ Hoạt độngPIC16C770-E/P Tóm tắt
What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data path, typically used for embedded control applications. Within the semiconductor taxonomy, the PIC16C770 belongs to: microcontroller -> 8-bit MCU -> CMOS MCU -> OTP-programmable MCU -> mixed-signal control IC. These devices integrate a CPU core, program memory (ROM/OTP/Flash), data RAM, peripherals, and I/O into a single package, and are widely used where cost, simplicity, and deterministic real-time response outweigh raw throughput.
Key features of the PIC16C770-E/P include its 20MHz maximum clock speed, 14-bit instruction word, 8-level hardware stack, and an instruction set optimized for compact code generation. The device integrates multiple peripherals such as a 10-bit Analog-to-Digital Converter (ADC), comparators, capture/compare/PWM (CCP) modules, USART, and multiple timers. These peripherals are essential for mixed-signal applications, enabling direct interface with sensors, actuators, and communication buses without external ICs.
Architecturally, the PIC16C770 uses a RISC-based Harvard architecture with separate program and data buses, executing most instructions in a single cycle. Its OTP program memory allows one-time field programming using Microchip's development tools (e.g., PICkit, MPLAB X), providing a cost-effective solution for low-to-medium volume production. The 256-byte RAM is well suited for stack-intensive operations and modest data buffering in control loops.
Typical applications include industrial control systems, sensor signal conditioning, motor control interfaces, automotive subsystems (non-safety-critical), and embedded consumer products. The extended temperature range also enables deployment in outdoor or ruggedized equipment. Designers choose this MCU for deterministic interrupt response, low system cost, and a stable, mature toolchain.
When designing with the PIC16C770-E/P, ensure the operating voltage (typically 2.5V–5.5V) and clock configuration match the application. For new designs, consider Flash-based PIC16F series equivalents, as the OTP variant cannot be reprogrammed and requires careful code validation. For prototyping, the 20-pin PDIP is breadboard-friendly, simplifying development cycles.
This page consolidates distributor pricing, drop-in compatible PIC16C family members, and design notes not aggregated on standard distributor pages, providing practical value beyond the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16C770-E/P — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16C770-E/P (cùng hình factor và footprint) — khác nhau ở Package, Timers, A/D Converter, Core, Data EEPROM.
PIC16C770-I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C770-E/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C770T-E/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F770-I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C711-04/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C76-10I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C770-E/P Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC® 16C (RISC, Harvard) |
| Program Memory Size | 3.5 KB (2K x 14) OTP |
| RAM Size | 256 x 8 bytes |
| Tần số xung maksimum | 20 MHz |
| Instruction Word Size | 14 bits |
| I/O Pins | 16 |
| Hộp | 20-PDIP (0.300" / 7.62 mm) |
| Khoảng nhiệt độ hoạt động | -40°C to +125°C (Extended, "-E") |
| Kiểu lắp đặt | Through-Hole (DIP) |
| ADC | 10-bit (integrated) |
| Timers | Multiple (TMR0/TMR1/TMR2) |
| CCP Modules | Yes (Capture/Compare/PWM) |
| USART | Yes |
| Comparators | Yes (integrated analog) |
| Trạng thái RoHS | compliant |
Cấu hình chân PIC16C770-E/P
| Chân 1 | MCLR/VPP/RA5 — Master Clear (reset) / programming voltage / Port A bit 5 |
| Chân 2 | RA0/AN0 — Port A bit 0 / Analog input channel 0 |
| Chân 3 | RA1/AN1 — Port A bit 1 / Analog input channel 1 |
| Chân 4 | RA2/AN2 — Port A bit 2 / Analog input channel 2 |
| Chân 5 | RA3/AN3/VREF — Port A bit 3 / Analog input 3 / Voltage reference |
| Chân 6 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| Chân 7 | AVSS — Analog ground |
| Chân 8 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Chân 9 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Chân 10 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer 1 oscillator output / T1 clock in |
| Chân 11 | RC1/T1OSI — Port C bit 1 / Timer 1 oscillator input |
| Chân 12 | RC2/CCP1 — Port C bit 2 / Capture/Compare/PWM 1 |
| Chân 13 | RC3 — Port C bit 3 |
| Chân 14 | RC4 — Port C bit 4 |
| Chân 15 | RC5 — Port C bit 5 |
| Chân 16 | RC6 — Port C bit 6 |
| Chân 17 | RC7 — Port C bit 7 |
| Chân 18 | RB0/INT — Port B bit 0 / External interrupt |
| Chân 19 | RB1 — Port B bit 1 |
| Chân 20 | AVDD — Analog power supply |
Ứng dụng tiêu biểu
PIC16C770-E/P phù hợp cho 6 Áp dụngs: Industrial Sensor Interface Module, HVAC Control Board, Automotive Body Control Subsystem, Battery-Powered Remote Sensor Node, Consumer Appliance Controller, Test and Measurement Front-End.
Industrial Sensor Interface Module
The PIC16C770-E/P suits industrial sensor-interface modules where deterministic response and extended-temperature operation matter. Its integrated 10-bit ADC reads analog sensor outputs (temperature, pressure, flow) at up to 20MHz CPU throughput, enabling up to ~5MIPS instruction execution. The on-chip comparators handle threshold detection without external op-amps, while 256B RAM supports modest buffering of sensor data. Operating from -40C to +125C, the /PDIP package withstands factory-floor thermal cycling, and the mature PIC16C toolchain simplifies IEC 61131-style control-loop firmware development.
Được đề xuất
HVAC Control Board
In HVAC (heating, ventilation, air conditioning) controllers, the PIC16C770-E/P drives relays and triacs based on temperature/humidity inputs. Its 16 I/O pins accommodate multiple thermostat inputs, fan-speed PWM outputs (via the CCP module), and a USART for connection to indoor unit network buses. The -E temperature grade supports unconditioned equipment rooms, while the OTP memory locks firmware against field tampering for security-critical commercial installations. Low-cost PDIP packaging aids through-hole assembly on legacy controller boards still in volume production.
Được đề xuất
Automotive Body Control Subsystem
For non-safety automotive body electronics (interior lighting, seat controllers, mirror adjust), the PIC16C770-E/P delivers the necessary -40C to +125C operating range in a robust PDIP form factor. The CCP module generates PWM for motor speed control of window lifts or seat adjusters, while the USART interfaces to LIN sub-network buses. OTP memory provides inherent code security once programmed, preventing unauthorized firmware modification. The 3.5KB program memory accommodates mid-complexity state-machine logic typical of body controllers.
Được đề xuất
Battery-Powered Remote Sensor Node
Battery-powered wireless sensor endpoints benefit from the PIC16C770-E/P's low-power Sleep mode and integrated peripherals. The MCU wakes periodically to read sensors via its 10-bit ADC, transmits data over USART to a connected radio module, and returns to Sleep. While the C770 is not as low-power as dedicated nano-power MCUs, its OTP memory prevents firmware extraction (a security feature for some applications) and its 20MHz speed allows quick wake-execute-sleep cycles. The PDIP package aids hand-soldered prototyping of remote nodes.
Được đề xuất
Consumer Appliance Controller
The PIC16C770-E/P is well suited to consumer appliance controllers such as coffee makers, bread machines, and small kitchen devices. Its 20MHz CPU delivers responsive keypad debouncing, LCD driving (via port pins), and motor/PWM control for搅拌 or pumping actions. The OTP memory protects proprietary algorithms once finalized, while the 14-bit instruction set yields compact code suitable for the 3.5KB program space. The PDIP package simplifies manufacturing for low-volume specialty appliances.
Được đề xuất
Test and Measurement Front-End
Bench-top test instruments and data-acquisition front-ends use the PIC16C770-E/P to manage user interfaces, ADC sequencing, and PC-side communication via USART. Its 10-bit integrated ADC handles measurement resolutions of 1 LSB ~5mV at 5V reference, sufficient for many bench instruments. The 256-byte RAM buffers acquisition samples between PC transfers, while the 16 I/O pins drive LCDs, keypads, and range-selection relays. The -E temperature grade ensures stable readings in lab environments with variable ambient conditions.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C770-E/P — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16C770-I/P | PIC16C770-E/SO | PIC16F770-I/P | PIC16C711-04/P | PIC16C76-10I/SP |
|---|---|---|---|---|---|---|
| Package | 20-PDIP (0.300") | 20-PDIP (0.300") - same | 20-SOIC - different footprint | 20-PDIP (0.300") - same | 20-PDIP (0.300") - same | 20-PDIP (0.300") - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 4 KB Flash | 1.75 KB OTP | 8 KB OTP |
| RAM | 256 B | 256 B | 256 B | 256 B | 68 B | 368 B |
| Max Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 10 MHz |
| Temperature Grade | Extended (-40C to +125C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial (-40C to +85C) |
| Program Memory Type | OTP | OTP | OTP | Flash | OTP | OTP |
| I/O Pins | 16 | 16 | 16 | 16 | 13 | 22 |
Bảo phân biệt quan trọng
- Extended -40C to +125C temperature grade in PDIP (vsPIC16C770-I/P)
- Through-hole PDIP package for ruggedized applications (vsPIC16C770-E/SO)
- Higher clock speed and memory vs lower-tier PIC16C711 (vsPIC16C711-04/P)
Ghi chú thiết kế
The PIC16C770 uses OTP (One-Time-Programmable) memory - code can be written only once. Engineers should fully validate firmware using a Flash equivalent (PIC16F770) or a windowed UV-erasable version before committing to OTP. Programming errors waste the device permanently. Use Microchip's PICkit 3/4 or MPLAB PM3 with proper ICSP connections (MCLR, VPP, VDD, VSS, PGD, PGC) and verify the device ID before programming to avoid bricking parts.
For stable operation, place a 100nF decoupling capacitor close to the AVDD pin and a 10uF bulk capacitor near the digital VDD supply. The PIC16C770 has separate analog and digital supplies (AVDD/AVSS); keep analog ground returns clean and star-connected to digital ground at a single point near the MCU. Use MCP1700 or equivalent low-dropout regulators with adequate headroom to prevent brown-out during motor or relay switching events.
For mixed-signal designs using the integrated 10-bit ADC, route analog inputs (RA0-RA3) away from digital switching traces, and surround analog signals with a ground pour to minimize coupling. Keep crystal traces (OSC1, OSC2) short and symmetric; place load capacitors within 2-3mm of the oscillator pins. The 20-PDIP footprint simplifies through-hole prototyping but consider a SOIC-20 layout option (PIC16C770-E/SO) if surface-mount assembly is required for production.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified (industrial grade only). Lead-free terminations. Conflict-mineral compliance per Microchip corporate policy.
