PIC16C711T-20E/SO - 8-Bit 20MHz OTP MCU 1.75KB | Microchip
MPN: PIC16C711T-20E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $3.02 | $1,510.00 |
| 1,000 | $2.69 | $2,690.00 |
PIC16C711T-20E/SO Overview
What is an 8-bit OTP microcontroller? It is a single-chip computer built around an 8-bit data path, integrating CPU, ROM/EPROM/Flash program memory, RAM, and peripherals into one package. OTP variants are programmed once after manufacture using a device programmer - cheaper than Flash but not reprogrammable. The PIC16C71X family adds an on-chip 8-bit Analog-to-Digital Converter (ADC), positioning this MCU between bare 8-bit controllers and higher-pin-count PIC16F parts in the Microchip PIC taxonomy: microcontroller -> 8-bit MCU -> PIC16 mid-range -> PIC16C71X.
Key features include 13 digital I/O pins, an integrated 8-bit ADC with 4 input channels, a 35-instruction RISC instruction set with 200ns instruction execution time, and a wide operating voltage range that supports both 5V and lower-voltage designs. Per the Microchip product page, Microchip recommends the newer PIC16F716 as a direct replacement for new designs; this EOL-style legacy part is maintained for existing automotive and industrial designs.
The PIC16C71X uses a Harvard-architecture CPU with separate program and data buses, allowing simultaneous instruction fetch and data access. The CMOS process delivers low power consumption, and the integrated ADC eliminates the need for an external converter in simple sensor-reading applications.
Typical applications include automotive sensor interfaces, industrial control logic, appliance controllers, and legacy embedded systems. The integrated ADC and 13 I/O make it well suited to simple mixed-signal designs where a higher-pin-count MCU would be wasteful.
When migrating from this part, consider PIC16F716 (Flash-based, same family) for new designs. The OTP memory makes field updates impossible, so choose PIC16F716 if your firmware may need in-system reprogramming. Source from authorized distributors only - counterfeit OTP PICs are common.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that complement the manufacturer datasheet for engineers maintaining legacy PIC16C711 designs.
Drop-in alternatives for PIC16C711T-20E/SO — 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 PIC16C711T-20E/SO (same form factor and footprint) — differing in Package, Program Memory Size, Program Memory Type, ADC, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C711-20/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C711T-20/SO
✅ Drop-In✓ In Stock
$2.85 / Unit
View Datasheet →PIC16C711-04/SO
✅ Drop-In✓ In Stock
$3.32 / Unit
View Datasheet →PIC16C711T-04I/SO
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16C711-04E/SO
✅ Drop-In✓ In Stock
$1.71 / Unit
View Datasheet →PIC16C711T-20E/SO Maximum Ratings & Electrical Characteristics
| Core | PIC16 (8-bit RISC) |
| Instruction Set | 35 single-word instructions |
| Instruction Execution Time | 200 ns |
| Maximum Clock Speed | 20 MHz |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Program Memory Size | 1.75 KB (1K x 14) |
| RAM | 68 x 8 bytes |
| Data EEPROM | Not present |
| I/O Pins | 13 |
| ADC | 8-bit, 4 channels integrated |
| Supply Voltage | 4 V to 6 V |
| Operating Temperature | -40 C to +125 C (automotive grade, E suffix) |
| Package | 18-SOIC (SO, 0.295 inch / 7.50 mm body width) |
| Mounting Type | Surface Mount |
| Process Technology | CMOS |
PIC16C711T-20E/SO Pin Configuration
| Pin 1 | RA2/AN2 — GPIO Port A bit 2 / ADC input channel 2 |
| Pin 2 | RA3/AN3 — GPIO Port A bit 3 / ADC input channel 3 |
| Pin 3 | RA4/T0CKI — GPIO Port A bit 4 / Timer0 clock input (open-drain) |
| Pin 4 | MCLR — Master Clear reset input (active low) |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0/INT — GPIO Port B bit 0 / External interrupt input |
| Pin 7 | RB1 — GPIO Port B bit 1 |
| Pin 8 | RB2 — GPIO Port B bit 2 |
| Pin 9 | RB3 — GPIO Port B bit 3 |
| Pin 10 | RB4 — GPIO Port B bit 4 |
| Pin 11 | RB5 — GPIO Port B bit 5 |
| Pin 12 | RB6 — GPIO Port B bit 6 |
| Pin 13 | RB7 — GPIO Port B bit 7 |
| Pin 14 | VDD — Positive supply voltage (4V to 6V) |
| Pin 15 | OSC2/CLKOUT — Oscillator output / Clock output (crystal mode) |
| Pin 16 | OSC1/CLKIN — Oscillator input / External clock input |
| Pin 17 | RA0/AN0 — GPIO Port A bit 0 / ADC input channel 0 |
| Pin 18 | RA1/AN1 — GPIO Port A bit 1 / ADC input channel 1 |
Typical Applications
PIC16C711T-20E/SO is suitable for 6 applications: Automotive Sensor Interface, Industrial Control Logic, Home Appliance Controllers, Legacy Embedded System Maintenance, Simple Mixed-Signal Data Acquisition, Battery-Backed Sensor Node.
Automotive Sensor Interface
The PIC16C711T-20E/SO fits automotive sensor-interface designs through its integrated 8-bit ADC with 4 input channels and 13 GPIO pins that multiplex the ADC inputs. With 20MHz clock and 200ns instruction cycle, it can sample multiple sensors at automotive bus rates. The E-grade -40C to +125C temperature rating is required for underhood and cabin ECU modules. Place the MCU close to the sensor connectors to minimize analog trace length and use the integrated ADC reference for ratiometric measurements with potentiometric sensors and NTC thermistors.
Recommended
Industrial Control Logic
For industrial PLC I/O modules and small motor controllers, the PIC16C711T-20E/SO provides 13 GPIO pins sufficient for relay driving, switch sensing, and indicator LED control without external logic. The 20MHz throughput supports 5 MIPS execution, adequate for PID loops on slow thermal or flow processes. The automotive-grade E temperature range covers most industrial cabinets and outdoor enclosures. Use the integrated ADC to read 4-20mA current-loop sensors via a burden resistor, with the wide GPIO count eliminating the need for an external I/O expander.
Recommended
Home Appliance Controllers
White-goods appliance controllers (washing machines, dishwashers, microwave ovens) commonly use the PIC16C711T-20E/SO for its low cost, integrated ADC for water-level or temperature sensing, and 13 GPIO for motor relay and user-interface key scanning. The OTP memory prevents accidental firmware corruption in the field, an advantage over Flash in high-noise appliance environments. The 18-SOIC package suits hand-soldered prototyping. Consider the PIC16F716 for any design where post-production firmware tuning is required.
Recommended
Legacy Embedded System Maintenance
Many production lines still contain boards populated with PIC16C711T-20E/SO that were designed in the late 1990s and 2000s. This part remains the only qualified replacement for EOL-avoidance service stock, especially where the original firmware has been validated against the exact OTP silicon revision. The Microchip cross-reference recommends PIC16F716 for new designs but acknowledges that legacy automotive and industrial customers continue production. For service/repair, this part maintains the original BOM, regulatory certifications, and EMC profile.
Recommended
Simple Mixed-Signal Data Acquisition
Small-channel-count data acquisition front-ends for HVAC, building automation, or environmental monitoring use the PIC16C711T-20E/SO with its integrated 8-bit ADC to digitize 4 analog channels without an external converter. The 20MHz CPU performs averaging, linearization, and serial transmission to a host controller. The 18-SOIC footprint is compact for DIN-rail mounted modules. With 1.75KB OTP memory, the firmware can include calibration tables, lookup-based linearization, and Modbus-style protocol stacks for small-channel-count remote terminal units.
Recommended
Battery-Backed Sensor Node
Simple battery-backed sensor nodes with periodic wake-measure-transmit cycles use the PIC16C711T-20E/SO with its CMOS low-power design. While PIC16C does not have the deep-sleep modes of PIC16F1xxx, the integrated ADC and 13 GPIO allow direct sensor interfacing without external ICs, reducing total system quiescent current. The 4V minimum supply supports operation from a 4xAA battery stack or a single Li-ion cell with undervoltage margin. The automotive temp grade ensures operation in outdoor enclosures across seasonal extremes.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C711T-20E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C711-20/SO | PIC16C711T-20/SO | PIC16C711-04/SO | PIC16C711T-04I/SO | PIC16C711-04E/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC | 18-SOIC (same) | 18-SOIC (same) | 18-SOIC (same) | 18-SOIC (same) | 18-SOIC (same) |
| Max Clock Speed | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 4 MHz | 4 MHz |
| Program Memory | 1.75 KB OTP | 1.75 KB OTP | 1.75 KB OTP | 1.75 KB OTP | 1.75 KB OTP | 1.75 KB OTP |
| RAM | 68 bytes | 68 bytes | 68 bytes | 68 bytes | 68 bytes | 68 bytes |
| Operating Temperature | -40C to +125C (E) | 0C to +70C | 0C to +70C | 0C to +70C | -40C to +85C (I) | -40C to +125C (E) |
| ADC | 8-bit, 4 channels | 8-bit, 4 channels | 8-bit, 4 channels | 8-bit, 4 channels | 8-bit, 4 channels | 8-bit, 4 channels |
| GPIO Pins | 13 | 13 | 13 | 13 | 13 | 13 |
| Supply Voltage | 4 V to 6 V | 4 V to 6 V | 4 V to 6 V | 4 V to 6 V | 4 V to 6 V | 4 V to 6 V |
Key Differentiators
- Automotive-grade Extended temperature range (vs PIC16C711-20/SO)
- Same family with Flash reprogrammability for new designs (vs PIC16F716-I/SO)
- Lower-speed 4MHz grade available for cost-sensitive designs (vs PIC16C711-04/SO)
Design Notes
PIC16C711T-20E/SO uses One-Time Programmable (OTP) memory - firmware cannot be erased or rewritten after programming. Always validate firmware in a Flash-based equivalent (PIC16F716-I/SO) or a windowed ceramic package PIC16C711 before committing to OTP production parts. Budget for a small prototype Flash lot during firmware bring-up; only switch to OTP once the firmware is locked. OTP parts ordered with buggy firmware cannot be recovered - they must be discarded.
The PIC16C711 operates from 4V to 6V VDD only - it does NOT support 3.3V systems. For 3.3V designs, use PIC16LF series or migrate to PIC16F716 which has a wider VDD range. Decouple VDD with a 100nF ceramic capacitor placed within 5mm of the VDD pin, plus a 10uF bulk capacitor on the supply rail. The MCLR reset pin should be pulled up to VDD through a 10k resistor with a 100nF capacitor to ground for proper power-on reset behavior per Microchip application notes.
Route the crystal or resonator traces between OSC1 (pin 16) and OSC2 (pin 15) as short as possible, with a ground guard ring around the oscillator network. For ADC accuracy, route analog inputs (RA0-RA3) away from digital switching traces and keep the analog reference pin (if used) bypassed with 100nF + 10uF capacitors. The 18-SOIC package is 0.295 inch (7.50 mm) body width - use standard SOIC-18 land patterns per IPC-7351.
Estimated: at the maximum operating temperature of +125C (E grade), the PIC16C711 in 18-SOIC has a theta_JA of approximately 100 C/W on a standard JEDEC 2-layer test board. The CMOS PIC16C711 typically dissipates 5-25mA active and under 1mA standby; at 5V and 20MHz this yields about 125mW worst case, giving a junction temperature rise of 12.5C above ambient - well within the 150C absolute maximum. For continuous high-temperature operation above +85C ambient, derate clock frequency or duty cycle.
Compliance Information
RoHS/REACH status for PIC16C711T-20E/SO was not explicitly available in the verified web data; consult Microchip's official material declaration document for compliance confirmation. The automotive 'E' temperature grade is not equivalent to AEC-Q100 qualification - AEC-Q100 is a separate automotive reliability standard not listed in the available data.
