PIC16C770-E/P - 8-Bit 20MHz 3.5KB OTP MCU 20-PDIP | Microchip
MPN: PIC16C770-E/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.5 | $7.50 |
| 10 | $6.75 | $67.50 |
| 100 | $5.95 | $595.00 |
| 500 | $5.2 | $2,600.00 |
| 1,000 | $4.65 | $4,650.00 |
PIC16C770-E/P Overview
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.
Drop-in alternatives for PIC16C770-E/P — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16C770-E/P (same form factor and footprint) — differing in Package, Timers, A/D Converter, Core, Data EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C770-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C770-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C770T-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F770-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C711-04/P
✅ Drop-In✓ In Stock
$2.54 / Unit
View Datasheet →PIC16C76-10I/SP
✅ Drop-In✓ In Stock
$5.18 / Unit
View Datasheet →PIC16C770-E/P Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC® 16C (RISC, Harvard) |
| Program Memory Size | 3.5 KB (2K x 14) OTP |
| RAM Size | 256 x 8 bytes |
| Maximum Clock Frequency | 20 MHz |
| Instruction Word Size | 14 bits |
| I/O Pins | 16 |
| Package | 20-PDIP (0.300" / 7.62 mm) |
| Operating Temperature Range | -40°C to +125°C (Extended, "-E") |
| Mounting Type | Through-Hole (DIP) |
| ADC | 10-bit (integrated) |
| Timers | Multiple (TMR0/TMR1/TMR2) |
| CCP Modules | Yes (Capture/Compare/PWM) |
| USART | Yes |
| Comparators | Yes (integrated analog) |
| RoHS Status | compliant |
PIC16C770-E/P Pin Configuration
| Pin 1 | MCLR/VPP/RA5 — Master Clear (reset) / programming voltage / Port A bit 5 |
| Pin 2 | RA0/AN0 — Port A bit 0 / Analog input channel 0 |
| Pin 3 | RA1/AN1 — Port A bit 1 / Analog input channel 1 |
| Pin 4 | RA2/AN2 — Port A bit 2 / Analog input channel 2 |
| Pin 5 | RA3/AN3/VREF — Port A bit 3 / Analog input 3 / Voltage reference |
| Pin 6 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| Pin 7 | AVSS — Analog ground |
| Pin 8 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Pin 9 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Pin 10 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer 1 oscillator output / T1 clock in |
| Pin 11 | RC1/T1OSI — Port C bit 1 / Timer 1 oscillator input |
| Pin 12 | RC2/CCP1 — Port C bit 2 / Capture/Compare/PWM 1 |
| Pin 13 | RC3 — Port C bit 3 |
| Pin 14 | RC4 — Port C bit 4 |
| Pin 15 | RC5 — Port C bit 5 |
| Pin 16 | RC6 — Port C bit 6 |
| Pin 17 | RC7 — Port C bit 7 |
| Pin 18 | RB0/INT — Port B bit 0 / External interrupt |
| Pin 19 | RB1 — Port B bit 1 |
| Pin 20 | AVDD — Analog power supply |
Typical Applications
PIC16C770-E/P is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C770-E/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
Key Differentiators
- Extended -40C to +125C temperature grade in PDIP (vs PIC16C770-I/P)
- Through-hole PDIP package for ruggedized applications (vs PIC16C770-E/SO)
- Higher clock speed and memory vs lower-tier PIC16C711 (vs PIC16C711-04/P)
Design Notes
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.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified (industrial grade only). Lead-free terminations. Conflict-mineral compliance per Microchip corporate policy.
