PIC16C773/SP - 8-Bit 20MHz CMOS OTP MCU w/ 12-bit ADC | Microchip
MPN： PIC16C773/SP ✓ 啟用中PIC16C773/SP 概覽
Key features include a 20 MHz maximum clock speed (200 ns instruction cycle), 35 single-word instructions, an architecture that is upwards compatible with the PIC16C5X and PIC12CXXX device families, an operating voltage range of 4.0 V to 5.5 V, and an industrial operating temperature range of 0°C to +70°C. The integrated 12-bit A/D converter eliminates the need for external signal-conditioning circuitry in precision measurement applications.
The PIC16C773/SP uses Microchip's proven Harvard RISC architecture with separate code and data buses, enabling single-cycle instruction fetch and execution at 20 MHz. The 12-bit ADC provides 4096 discrete output codes (vs. 1024 for 10-bit converters), enabling finer discrimination of small analog signal changes for transducer and instrumentation designs. OTP (One-Time Programmable) memory allows final firmware commitment at production time at lower per-unit cost than windowed EPROM.
Typical applications include industrial process control instrumentation, sensor signal conditioning, motor control feedback loops, multi-channel data acquisition systems, and embedded control subsystems requiring moderate computational throughput and precision analog measurement. The PIC16C773 was historically used in HVAC controllers, medical instrumentation, and automotive subsystems.
When designing with this device, ensure the MCLR pin is properly biased and that the oscillator configuration (RC, XT, HS, LP) matches the crystal or resonator used. The 12-bit ADC requires an adequate reference voltage source; VR+ and VR- pins must be driven by a low-impedance reference for rated accuracy.
直接替換替代品，適用於 PIC16C773/SP — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC16C773/SP （相同外形與佔位） — 差異在於 Package, Mounting Type, ADC, Core, Maximum Clock Frequency.
PIC16C773-I/SP
✅ 直接替換📋 參考替代品（不在目錄中）
PIC16C76-10I/SP
✅ 直接替換聯絡詢價
查看資料表 →PIC16C76-20I/SP
✅ 直接替換聯絡詢價
查看資料表 →PIC16C773/SP 最大額定值與電氣特性
| Family | PIC16C |
| Core | 8-bit RISC (Harvard architecture) |
| Program Memory | 7 KB (4K x 14) OTP |
| RAM | 256 bytes |
| Maximum Clock Speed | 20 MHz |
| Instruction Cycle | 200 ns |
| Instruction Set | 35 single-word instructions |
| I/O Pins | 22 |
| ADC | 12-bit, 6 channels |
| 供應電壓 | 4.0 V to 5.5 V |
| 工作溫度 | 0°C to +70°C |
| 封裝 | 28-SPDIP (0.300 inch, 7.62mm) |
| 安裝類型 | Through-Hole (DIP) |
| ROM Type | OTP (One-Time Programmable) |
| Architecture Compatibility | PIC16C5X, PIC12CXXX |
PIC16C773/SP 腳位配置
| 腳位 1 | MCLR — Master Clear (Reset) input, active low |
| 腳位 2 | RA0/AN0 — Digital I/O / Analog input 0 |
| 腳位 3 | RA1/AN1 — Digital I/O / Analog input 1 |
| 腳位 4 | RA2/AN2 — Digital I/O / Analog input 2 |
| 腳位 5 | RA3/AN3/VREF — Digital I/O / Analog input 3 / VREF input |
| 腳位 6 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| 腳位 7 | RA5/AN4/SS — Digital I/O / Analog input 4 / SPI Slave Select |
| 腳位 8 | VSS — Ground reference |
| 腳位 9 | OSC1/CLKIN — Oscillator input / external clock input |
| 腳位 10 | OSC2/CLKOUT — Oscillator output / clock output |
| 腳位 11 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output / Timer1 clock input |
| 腳位 12 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / Capture/Compare/PWM2 |
| 腳位 13 | RC2/CCP1 — Digital I/O / Capture/Compare/PWM1 |
| 腳位 14 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| 腳位 15 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| 腳位 16 | RC5/SDO — Digital I/O / SPI data out |
| 腳位 17 | RC6/TX/CK — Digital I/O / UART TX / synchronous clock |
| 腳位 18 | RC7/RX/DT — Digital I/O / UART RX / synchronous data |
| 腳位 19 | VSS — Ground reference |
| 腳位 20 | VDD — Positive supply voltage |
| 腳位 21 | RB0/INT — Digital I/O / External interrupt |
| 腳位 22 | RB1 — Digital I/O |
| 腳位 23 | RB2 — Digital I/O |
| 腳位 24 | RB3 — Digital I/O |
| 腳位 25 | RB4 — Digital I/O |
| 腳位 26 | RB5 — Digital I/O |
| 腳位 27 | RB6/PGC — Digital I/O / ICSP clock |
| 腳位 28 | RB7/PGD — Digital I/O / ICSP data |
典型應用
PIC16C773/SP 適用於 7 應用s: Industrial Process Control, Sensor Signal Conditioning, HVAC Controller Subsystems, Multi-Channel Data Acquisition, Medical Instrumentation, Motor Control Feedback, Automotive Aftermarket Accessories.
Industrial Process Control
The PIC16C773/SP fits industrial process-control applications because of its 12-bit ADC (4096 codes over 0-5 V gives ~1.22 mV resolution) and 22 digital I/O lines for sensor multiplexing, actuator drive, and HMI interfacing. It directly digitizes thermocouple, RTD, pressure-transducer, and 4-20 mA-loop signals via the six 12-bit ADC channels, eliminating external signal-conditioning ASICs. The 20 MHz CPU provides 5 MIPS throughput for PID loop computation, while the 256-byte RAM holds sensor-history buffers and the 7 KB OTP holds the control algorithm. Industrial designers should pair it with isolated RS-485 transceivers for supervisory SCADA links.
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Sensor Signal Conditioning
The PIC16C773/SP is ideal for multi-channel sensor-signal-conditioning modules because the 12-bit ADC's 1.22 mV LSB step detects sub-percent changes in bridge, thermistor, and strain-gauge outputs. The six ADC inputs scan up to six sensors per device, and the PIC16C RISC core runs calibration routines in firmware. With 4.0-5.5 V supply and 0-70 °C commercial temperature grade, the part fits indoor enclosures. Designers typically add a precision 2.5 V ADR01 reference to the VR+ pin to reach full 12-bit absolute accuracy.
推薦
HVAC Controller Subsystems
The PIC16C773/SP serves well in HVAC controller subsystems because it integrates a 12-bit ADC (needed for accurate temperature and humidity sensing), 22 I/O (for fan relays, damper motors, and LCD/keypad interfacing), and a 5 MIPS CPU (sufficient for PID loop computation across multiple zones). The OTP memory holds the final committed control algorithm at lower per-unit cost than Flash. Designers must derate I/O drive for triac-switched line-voltage loads and add optocouplers for mains isolation per UL 873.
推薦
Multi-Channel Data Acquisition
The PIC16C773/SP fits portable multi-channel data-acquisition front ends because the 12-bit ADC at 6 channels digitizes up to six analog inputs without external MUX/ADC hardware, reducing BOM cost and PCB area. The 20 MHz CPU performs local averaging, peak detection, and statistics in real time. Designers typically buffer data through the 256-byte RAM and transmit results via UART or SPI to a host processor. Battery-powered variants should add a TPS7A30 LDO for low-noise ADC reference supply.
推薦
Medical Instrumentation
The PIC16C773/SP fits medical instrumentation front-end modules because the 12-bit ADC captures physiological signals with sufficient resolution for pulse oximetry, blood-pressure monitors, and patient-monitoring peripherals, while the PIC16C RISC core implements digital filtering and display refresh. The commercial 0-70 °C operating range covers clinical indoor environments. For patient-isolation designs, designers must add IEC 60601-compliant isolation barriers and reinforced insulation between the PIC and any patient-contact circuitry.
推薦
Motor Control Feedback
The PIC16C773/SP fits motor-control feedback subsystems because the 12-bit ADC accurately digitizes back-EMF, current-sense, and tachometer signals for closed-loop control of BLDC, stepper, and DC motors. The 22 I/O pins drive PWM outputs, quadrature encoder inputs, and fault-flag inputs without external logic. Designers should pair the device with gate drivers such as the IR2104 and current-sense amplifiers such as the INA240. The OTP memory finalizes control firmware at production time.
推薦
Automotive Aftermarket Accessories
The PIC16C773/SP fits automotive aftermarket accessories because the 12-bit ADC reads multiple sensor inputs (temperature, pressure, position) and the 5 MIPS core drives display panels and switch inputs. Although the commercial 0-70 °C grade is narrow for under-hood use, aftermarket interior accessories operate comfortably in this range. Designers should add automotive-grade voltage regulation (e.g. LM7805 with reverse-battery protection) and load-dump suppression to survive 12 V vehicle electrical transients.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16C773/SP — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC16C773-I/SP | PIC16C773-I/SO | PIC16C770-I/SS | PIC16C76-10I/SP | PIC16C76-20I/SP |
|---|---|---|---|---|---|---|
| Package | 28-SPDIP | 28-SPDIP - same | 28-SOIC - differs (SMD) | 28-SSOP - differs (SMD) | 28-SPDIP - same | 28-SPDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 14 KB OTP | 14 KB OTP |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 8-bit | 8-bit |
| Maximum Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 10 MHz | 20 MHz |
| Operating Temperature | 0°C to +70°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C |
| I/O Pins | 22 | 22 | 22 | 22 | 22 | 22 |
主要差異化特點
- 12-bit ADC vs 8-bit on PIC16C76 family (對比PIC16C76-10I/SP)
- Same 28-SPDIP package as PIC16C76 family (對比PIC16C76-10I/SP)
- Industrial temperature variant available in same package (對比PIC16C773-I/SP)
設計說明
The PIC16C773/SP operates from a single 4.0-5.5 V supply on VDD with VSS at ground. Place a 0.1 µF ceramic decoupling capacitor as close as possible to the VDD pin (pin 20), with a 10 µF tantalum or electrolytic bulk capacitor on the same supply rail. The device draws approximately 5 mA active at 20 MHz and 1 µA standby, so the bulk capacitor prevents VDD sag during peripheral switching events.
Route the analog ADC inputs (RA0-RA5) away from digital switching traces and clock lines to minimize coupling noise into the 12-bit ADC. Use a guarded ground plane around the analog section, and route the VR+/VR- reference pins directly to a precision voltage reference (e.g. ADR01) without sharing traces with digital return currents. Estimated: with these layout practices the 12-bit ADC achieves close to its rated SNR.
The MCLR pin (pin 1) must be pulled high through a 10 kΩ resistor for normal operation; leaving it floating causes intermittent resets. Do not connect VDD to VR+ directly without filtering - a noisy reference directly limits ADC accuracy. The OSC1/OSC2 oscillator selection bits must match the actual crystal or resonator in use (HS, XT, LP, RC), or the device will fail to start reliably. OTP memory is one-time programmable - verify firmware with a Flash or windowed equivalent (e.g. PIC16C773/JW) before committing production units.
The PIC16C773/SP SPDIP package has a thermal resistance of approximately 85 °C/W junction-to-ambient. Estimated: at 5 V supply, 20 MHz active, and 22 I/O driving 10 mA each, total power dissipation is around 200 mW, yielding a 17 °C junction rise above ambient - well within the 0-70 °C commercial range. Designers in enclosed housings with limited airflow should verify junction temperature under worst-case ambient.
合規資訊
Compliance information not explicitly stated in the verified web data. PIC16C773/SP is a legacy through-hole product; designers should request the latest material declaration from Microchip for RoHS/REACH status.
