PIC16C711-20I/P - 8-Bit 20MHz OTP MCU, 1.75KB | 18-PDIP | Microchip
MPN: PIC16C711-20I/P ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.3 | $7.30 |
| 10 | $6.57 | $65.70 |
| 100 | $5.85 | $585.00 |
| 500 | $5.2 | $2,600.00 |
| 1,000 | $4.92 | $4,920.00 |
PIC16C711-20I/P Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + data), and configurable peripherals into one IC. The PIC16C711 belongs to the mid-range PIC16C family, which sits in the hierarchy: MCU -> microcontroller -> embedded controller -> semiconductor. These devices serve as the programmable "brain" of embedded systems, replacing discrete logic and reducing bill-of-material cost in products where deterministic real-time response matters. The OTP variant specifically supports low-volume and prototype production where in-field reprogramming is not required.
Key features include a hardware Brown-out Reset (BOR) circuit for reliable power-on behavior, an 8-bit Timer0 with an 8-bit prescaler, an analog comparator module, and a programmable watchdog timer. The 4-channel 8-bit ADC provides successive-approximation conversion with a single analog reference, enabling direct interface to potentiometers, sensors, and analog signals without external ADC hardware. The device operates across the -40C to +85C industrial temperature range (the "I" suffix in the part number indicates industrial grade).
Architecturally, the PIC16C711 uses a Harvard RISC core with separate program and data buses, 35 single-word instructions, and an 8-level hardware stack. Program memory is implemented as EPROM (erasable windowed package not present on the PDIP variant - OTP only). The 13 I/O pins are individually direction-controlled and support weak pull-up configuration on PORTB, simplifying keyboard matrix and switch-input wiring without external resistors.
Typical applications include appliance control boards, sensor signal conditioning front-ends, simple motor-control logic, battery chargers, security panels, and consumer white goods. Designers choose this part when they need a low-pin-count, low-cost OTP MCU with on-chip ADC and industrial temperature grading.
A critical design consideration when using the PIC16C711-20I/P: OTP memory cannot be reprogrammed, so all firmware must be fully verified on a windowed (JW) or Flash equivalent before committing to the OTP version in production. For development, consider PIC16F711 (Flash) as a software-compatible alternative.
This page synthesizes distributor pricing from 13 sources, verified drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet.
Drop-in alternatives for PIC16C711-20I/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 PIC16C711-20I/P (same form factor and footprint) — differing in Package, Timers, Mounting Type, Operating Temperature, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C711-20/P
✅ Drop-In✓ In Stock
$3.1 / Unit
View Datasheet →PIC16C711-04I/P
✅ Drop-In✓ In Stock
$3.05 / Unit
View Datasheet →PIC16C711-04E/P
✅ Drop-In✓ In Stock
$0.72 / Unit
View Datasheet →PIC16C711-04/P
✅ Drop-In✓ In Stock
$2.54 / Unit
View Datasheet →PIC16C711-20I/P Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit Microcontroller (MCU) |
| Core Architecture | PIC16C (Harvard RISC, 35 instructions) |
| Program Memory | 1.75 KB (1K x 14) OTP EPROM |
| Data Memory (RAM) | 68 bytes |
| EEPROM Data Memory | None (OTP family) |
| Maximum Clock Frequency | 20 MHz (200 ns instruction cycle) |
| I/O Pins | 13 (individually direction-controlled) |
| ADC | 4 channels x 8-bit successive approximation |
| Timers | Timer0: 8-bit with 8-bit prescaler; WDT |
| Analog Comparator | 1 on-chip module |
| Brown-out Reset (BOR) | Yes, hardware BOR circuit |
| Watchdog Timer (WDT) | Yes, software-enabled |
| Operating Voltage (VDD) | 2.5 V to 6.0 V (typical, see datasheet for full range) |
| Operating Temperature | -40C to +85C (Industrial grade, "I" suffix) |
| Package | 18-pin PDIP (0.300", 7.62 mm) |
| Mounting Type | Through-Hole (THT) |
| MSL Level | Not applicable (through-hole) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16C711-20I/P Pin Configuration
| Pin 1 | MCLR/Vpp — Master Clear (Reset, active low) / Programming voltage input |
| Pin 2 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| Pin 4 | RA2/AN2 — PORTA bit 2 / Analog input channel 2 |
| Pin 5 | RA3/AN3/VREF — PORTA bit 3 / Analog input channel 3 / ADC Vref |
| Pin 6 | RA4/T0CKI — PORTA bit 4 (open-drain) / Timer0 clock input |
| Pin 7 | VSS — Ground reference |
| Pin 8 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pin 9 | OSC2/CLKOUT — Oscillator crystal output / clock output (Fosc/4) |
| Pin 10 | RC0/T1OSO — PORTC bit 0 / Timer1 oscillator output |
| Pin 11 | RC1/T1OSI — PORTC bit 1 / Timer1 oscillator input |
| Pin 12 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM output |
| Pin 13 | RC3 — PORTC bit 3 (digital I/O only) |
| Pin 14 | RC4 — PORTC bit 4 (digital I/O only) |
| Pin 15 | RC5 — PORTC bit 5 (digital I/O only) |
| Pin 16 | RC6 — PORTC bit 6 (digital I/O only) |
| Pin 17 | RC7 — PORTC bit 7 (digital I/O only) |
| Pin 18 | VDD — Positive supply voltage |
Typical Applications
PIC16C711-20I/P is suitable for 6 applications: Appliance Control Boards, Industrial Sensor Signal Conditioning, Battery Charger Controllers, Security and Alarm Panels, Consumer Electronics White Goods, Simple Motor Control Logic.
Appliance Control Boards
The PIC16C711-20I/P's 4-channel 8-bit ADC and industrial -40C to +85C temperature range make it well suited for white-goods appliance control boards such as washing machines, dishwashers, and microwave ovens. Its 13 digital I/O pins can directly drive relay coils, triac optocouplers, sensor MUX select lines, and user-interface keypads without external logic. The 200 ns instruction cycle is fast enough for soft-start motor control loops and timer-based debouncing. Brown-out reset ensures reliable recovery from noisy AC-line brown-outs typical of washing-machine power environments, and the OTP memory lowers unit cost on high-volume SKUs.
Recommended
Industrial Sensor Signal Conditioning
The 4-channel 8-bit successive-approximation ADC integrated in the PIC16C711-20I/P allows direct connection to potentiometers, thermistor bridges, and 4-20 mA current-loop sensor outputs, eliminating the cost of a stand-alone ADC. Industrial temperature grading (-40C to +85C) supports factory-floor deployments where consumer-grade MCUs would fail. The hardware BOR circuit prevents firmware corruption when sensor supply rails drop during motor inrush events. The 20 MHz CPU clock provides sufficient headroom for digital filtering and PID-loop calculations on sampled data without an external DSP.
Recommended
Battery Charger Controllers
For lead-acid, NiCd, and NiMH battery charger products, the PIC16C711-20I/P provides a single-chip solution combining voltage monitoring via its 8-bit ADC, PWM-free charge-current control via Timer0, and user-interface I/O for LED status indication. The wide VDD operating range (2.5V-6.0V) supports direct operation from a 6V battery stack without additional regulation. Brown-out reset prevents incorrect charge-cycle initiation at low battery voltage. OTP programming locks firmware into the device for production units, while the 13 I/Os handle charge FET, discharge FET, fault LED, and temperature sense signals.
Recommended
Security and Alarm Panels
Security panel designs benefit from the PIC16C711-20I/P's low cost, OTP lock-in, and industrial temperature rating. The on-chip 8-bit ADC monitors up to 4 analog zones (PIR sensors, glass-break detectors), while the 13 digital I/Os drive keypads, sirens, status LEDs, and dialer interface signals. The hardware BOR and watchdog timer together provide failsafe recovery from supply glitches or firmware lockup. With only 35 single-word instructions and 1.75 KB program memory, this MCU comfortably fits typical panel firmware including zone supervision, arm/disarm logic, and event logging.
Recommended
Consumer Electronics White Goods
Consumer white-goods OEMs choose the PIC16C711-20I/P for entry-level user-interface and control sub-systems where cost per unit dominates design decisions. The OTP program memory prevents firmware reverse engineering in volume production. The 4-channel ADC simplifies front-panel potentiometer and thermistor reading for temperature, humidity, and timer settings. The 8-bit PIC RISC core runs a single-chip UI/state-machine loop efficiently at 20 MHz, leaving CPU bandwidth for debouncing, display multiplexing, and serial control of secondary ICs.
Recommended
Simple Motor Control Logic
The PIC16C711-20I/P serves as the supervisory controller in low-cost brushed DC and small stepper motor systems. Its 13 digital I/Os drive H-bridge enable lines, direction logic, and current-shunt comparator inputs. The integrated analog comparator can be configured for over-current protection with no external op-amp. At 20 MHz, the CPU executes trapezoidal or microstepping commutation sequences for small stepper motors in real time, while OTP memory locks the commutation table and acceleration profile into firmware.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C711-20I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C711-20/P | PIC16C711-04I/P | PIC16C711-04E/P | PIC16C711-04/P |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-PDIP | 18-PDIP - same | 18-PDIP - same | 18-PDIP - same | 18-PDIP - same |
| Maximum Clock Frequency | 20 MHz | 20 MHz - same | 4 MHz (-80%) | 4 MHz (-80%) | 4 MHz (-80%) |
| Instruction Cycle | 200 ns | 200 ns - same | 1 us (+400%) | 1 us (+400%) | 1 us (+400%) |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C - same | 0C to +70C (Extended Commercial) | 0C to +70C (Commercial) |
| Program Memory | 1.75 KB OTP EPROM | 1.75 KB OTP - same | 1.75 KB OTP - same | 1.75 KB OTP - same | 1.75 KB OTP - same |
| ADC Channels x Resolution | 4 x 8-bit | 4 x 8-bit - same | 4 x 8-bit - same | 4 x 8-bit - same | 4 x 8-bit - same |
| Brown-Out Reset (BOR) | Yes (hardware) | Yes - same | Yes - same | Yes - same | Yes - same |
| I/O Pins | 13 | 13 - same | 13 - same | 13 - same | 13 - same |
| Pin-to-Pin Compatible | Yes (reference) | Yes | Yes | Yes | Yes |
Key Differentiators
- Industrial temperature grade with BOR (vs PIC16C711-20/P)
- Full 20 MHz speed grade (vs PIC16C711-04I/P)
- OTP memory with full industrial temp range (vs PIC16C711-04E/P)
Design Notes
PIC16C711 contains One-Time Programmable (OTP) EPROM - firmware cannot be erased or rewritten after programming. For development and qualification cycles, always prototype with the PIC16F716 (Flash, same 18-PDIP pinout option) or a windowed PIC16C711 JW package. Committing firmware to OTP before full validation risks scrapping production units on a code bug.
Estimated: At VDD=5V and CPU active at 20 MHz, ICC typically runs 5-15 mA depending on I/O loading. Decouple VDD (pin 18) with a 100 nF ceramic capacitor placed within 5 mm of the pin, plus a bulk 10 uF electrolytic near the IC. The hardware Brown-Out Reset (BOR) holds the device in reset when VDD drops below threshold - external reset circuitry is not required but ensure supply noise is filtered to prevent spurious BOR events.
Place the decoupling capacitor as close to pin 18 (VDD) as possible with a short ground return to pin 7 (VSS). For ADC accuracy, route RA0-RA3 (pins 2-5) as short analog traces away from switching signals, and connect the ADC reference voltage (RA3/VREF or external) through a low-impedance source. The OSC1/OSC2 traces (pins 8-9) should be kept short and guarded with a ground pour to reduce oscillator noise coupling into the ADC.
The 18-PDIP package dissipates minimal power (typically <200 mW at 20 MHz) and does not require a heatsink in commercial and industrial environments. However, maximum ambient temperature near other heat-generating components (power supplies, regulators) should be kept below 70C to maintain junction temperature margin. Forced-air cooling is not required under normal operating conditions.
Compliance Information
RoHS-compliant per Microchip product page. Not AEC-Q100 qualified - this part is for industrial/commercial applications, not automotive. Lifecycle status NRND (Not Recommended for New Designs) - check Microchip for migration guidance.
