PIC16C771-E/SS - 8-bit MCU, 7KB OTP, 12-bit ADC | Microchip
MPN: PIC16C771-E/SS ✗ Cuối đờiPIC16C771-E/SS Tóm tắt
An 8-bit microcontroller (MCU) is a programmable integrated circuit that executes instructions 8 bits at a time. It belongs to the broader microcontroller family, which sits within the embedded processor hierarchy as a single-chip computer containing CPU, RAM, non-volatile program memory, and peripherals. 8-bit MCUs dominate cost-sensitive and deterministic-control applications because of their predictable instruction timing, low power draw, and long-term firmware stability.
Key features of the PIC16C771 include the 12-bit ADC (offering 4096 discrete codes versus the more common 8-bit/256 codes), 35 single-word instructions, and upwards compatibility with the PIC16C5X and PIC12CXXX architectures. It supports in-circuit serial programming (ICSP) and provides an internal oscillator option, reducing external component count. The 20 MHz clock yields 5 MIPS of throughput, and the wide 2.5V-5.5V operating range suits both 3.3V and 5V designs.
Technically, the device uses a RISC-based Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and operand access. The 12-bit ADC module includes a sample-and-hold circuit, selectable reference voltages, and programmable acquisition time. The -E suffix denotes the extended temperature grade (-40C to +125C), and the /SS suffix indicates the 20-pin SSOP package.
Typical applications include industrial sensor signal conditioning, precision instrumentation, automotive body controllers, and battery-powered measurement devices. The 12-bit ADC is particularly valuable in thermocouple/thermistor interfacing, strain-gauge readout, and process-control loops where 8-bit resolution is insufficient.
When designing with this part, note that OTP memory cannot be reprogrammed; for in-field updates, consider the PIC16F771 Flash equivalent. Decoupling capacitors (100 nF + 10 uF) should be placed within 5 mm of VDD, and unused I/O pins should be configured as outputs to minimize current draw.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, supporting faster component selection and BOM validation.
Bộ thay thế dễ dàng lắp đặt cho PIC16C771-E/SS — 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 PIC16C771-E/SS (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Size, Operating Temperature, ADC, Program Memory Type.
PIC16F771-I/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C770-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C771-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C717-I/SO
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Xem tài liệu →PIC16C771-E/SS Tỷ lệ tối đa & tính chất điện
| Core | PIC 8-bit RISC |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| RAM | 256 bytes |
| EEPROM | 0 bytes (none on this device) |
| CPU Speed | 20 MHz (200 ns instruction cycle, 5 MIPS) |
| I/O Pins | 16 |
| ADC | 12-bit, 6 channels |
| ADC Resolution | 12 bit (4096 codes) |
| Operating Voltage | 2.5 V to 5.5 V |
| Nhiệt độ hoạt động | -40 C to +125 C (Extended, -E grade) |
| Hộp | 20-pin SSOP (5.30 mm body width) |
| Kiểu lắp đặt | Surface Mount |
| Instruction Set | 35 single-word instructions |
| Architecture Compatibility | PIC16C5X and PIC12CXXX |
| Cấp MSL | 1 |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16C771-E/SS
| Chân 1 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| Chân 2 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| Chân 3 | RA2/AN2 — PORTA bit 2 / Analog input channel 2 |
| Chân 4 | RA3/AN3 — PORTA bit 3 / Analog input channel 3 |
| Chân 5 | RA4/AN4 — PORTA bit 4 / Analog input channel 4 |
| Chân 6 | RA5/AN5 — PORTA bit 5 / Analog input channel 5 |
| Chân 7 | VSS — Ground reference |
| Chân 8 | OSC1/CLKIN — Oscillator crystal input / external clock |
| Chân 9 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Chân 10 | RC0 — PORTC bit 0 (digital I/O) |
| Chân 11 | RC1 — PORTC bit 1 (digital I/O) |
| Chân 12 | RC2 — PORTC bit 2 (digital I/O) |
| Chân 13 | RC3 — PORTC bit 3 (digital I/O) |
| Chân 14 | RC4 — PORTC bit 4 (digital I/O) |
| Chân 15 | RC5 — PORTC bit 5 (digital I/O) |
| Chân 16 | RC6 — PORTC bit 6 (digital I/O) |
| Chân 17 | RC7 — PORTC bit 7 (digital I/O) |
| Chân 18 | MCLR/VPP — Master clear reset / programming voltage |
| Chân 19 | VDD — Positive supply voltage (2.5V-5.5V) |
| Chân 20 | RB0/INT — PORTB bit 0 / external interrupt |
Ứng dụng tiêu biểu
PIC16C771-E/SS phù hợp cho 6 Áp dụngs: Precision Sensor Signal Conditioning, Industrial Process Control, Battery-Powered Measurement Devices, Automotive Body Controllers, Medical Monitoring Equipment, Test and Measurement Instrumentation.
Precision Sensor Signal Conditioning
The PIC16C771-E/SS is well suited for precision sensor front-ends where the 12-bit ADC eliminates external converter cost. Its 4096-code resolution across 6 analog inputs handles thermocouple, thermistor, and strain-gauge signals directly. The 5 MIPS throughput at 20 MHz runs linearization algorithms in real time, while the 2.5V-5.5V range supports both 3.3V and 5V sensors. Compared with 8-bit ADC MCUs, the 16x finer quantization yields 0.024% resolution for industrial process control loops.
Được đề xuất
Industrial Process Control
In factory automation loops, the PIC16C771-E/SS provides deterministic 200 ns instruction execution for PID control. The 12-bit ADC captures 4-20 mA loop signals via a burden resistor, while PWM outputs drive valve actuators. Extended -40C to +125C temperature operation tolerates cabinet environments near motor drives. The 16 I/O pins accommodate HMI keypads and indicator LEDs without external I/O expanders, reducing BOM cost in PLC and DCS modules.
Được đề xuất
Battery-Powered Measurement Devices
Low-power portable instruments benefit from the PIC16C771-E/SS sleep modes and 12-bit ADC precision. The ADC can wake the CPU on threshold crossings, enabling multi-month battery life in field data loggers. Wide 2.5V-5.5V supply operation supports direct lithium or 3xAA battery stacks without regulators. Compared with 16-bit ADC MCUs at similar price, the PIC16C771 offers adequate precision for environmental monitoring at significantly lower cost.
Được đề xuất
Automotive Body Controllers
The PIC16C771-E/SS extended temperature grade supports automotive underhood and cabin environments. Six 12-bit ADC channels read sensors for HVAC blend doors, seat position, and lighting feedback. SSOP-20 footprint suits compact PCB modules behind dashboards. While Microchip recommends PIC16F equivalents for new automotive designs, the OTP PIC16C771-E/SS remains in use for cost-sensitive, firmware-stable body electronics in established vehicle platforms.
Được đề xuất
Medical Monitoring Equipment
The PIC16C771-E/SS 12-bit ADC supports medical devices such as blood-pressure monitors, pulse oximeters, and infusion pump sensors. The deterministic instruction timing ensures consistent sample rates critical for physiological signal capture. Extended temperature tolerance accommodates sterilization environments. For FDA-classified designs, Microchip's clinical-validation documentation for legacy PIC16C family parts accelerates regulatory submissions compared with newer MCUs.
Được đề xuất
Test and Measurement Instrumentation
Bench-top instruments like multimeters and signal analyzers leverage the PIC16C771-E/SS 12-bit ADC for mid-range precision measurements. Six channels support voltage, current, and temperature inputs simultaneously with 200 ns instruction timing for fast autoranging. The 35-instruction RISC set simplifies assembly coding for measurement algorithms. Compared with external ADC solutions, the integrated converter reduces PCB area while meeting the 0.1% accuracy needs of handheld DMMs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C771-E/SS — 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 | PIC16F771-I/SS | PIC16C770-I/SS | PIC16C771-I/SS |
|---|---|---|---|---|
| Package | 20-pin SSOP | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP (7 KB) | Flash (7 KB) | OTP (7 KB) | OTP (7 KB) |
| ADC Resolution | 12-bit (6 channels) | 12-bit (6 channels) | 10-bit (6 channels) | 12-bit (6 channels) |
| CPU Speed | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) |
| Operating Voltage | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V |
| Temperature Grade | Extended (-40C to +125C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) |
| Lifecycle Status | NRND | Active | NRND | NRND |
Bảo phân biệt quan trọng
- 12-bit ADC vs typical 10-bit in same family (vsPIC16C770-I/SS)
- Flash reprogrammability with identical pinout (vsPIC16F771-I/SS)
- Extended temperature grade option (vsPIC16C771-I/SS)
Ghi chú thiết kế
Decoupling: Place a 100 nF ceramic capacitor within 5 mm of the VDD pin (pin 19) and a 10 uF tantalum or ceramic bulk capacitor near the MCU. For ADC accuracy, add a separate AVdd filter (10 ohm + 10 uF) if the analog supply is isolated. Brown-out reset should be enabled below 4.5V for 5V systems to prevent code corruption during voltage dips.
Layout: Route analog signals (RA0-RA5) away from digital switching traces; maintain a ground guard ring around analog pins. Keep the crystal/oscillator traces short (<10 mm) and surround them with a grounded copper pour to minimize EMI coupling. The SSOP-20 footprint requires 0.65 mm pitch traces - use 0.15 mm trace/space design rules.
OTP memory is one-time programmable - firmware bugs cannot be fixed after programming. Always verify code in a PIC16F771-I/SS Flash equivalent before committing to PIC16C771 production programming. Unused I/O pins should be configured as outputs (set to logic 0) to minimize sleep current. The MCLR pin must not be left floating; tie through a 10 kohm pull-up to VDD.
Thông tin tuân thủ
RoHS compliant per Microchip product page and distributor listings. AEC-Q100 not qualified - for automotive applications requiring formal qualification, consider PIC16F1939 or similar modern automotive-grade MCU. REACH and conflict minerals status not explicitly listed in verified data.
