PIC16C711T-20I/SS - 8-bit OTP MCU, 1.75KB, 13 I/O, 20MHz SSOP-20 | Industrial
MPN: PIC16C711T-20I/SS β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.46 | $1.46 |
| 10 | $1.4 | $14.00 |
| 100 | $1.25 | $125.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.92 | $920.00 |
PIC16C711T-20I/SS Overview
What is an OTP microcontroller? An OTP (One-Time Programmable) microcontroller is a class of MCU whose program memory is implemented as factory-or-user-programmable EPROM cells that can be written exactly once and cannot be electrically erased. OTP MCUs belong to the legacy MCU hierarchy MCU -> microcontroller -> embedded controller -> semiconductor, and they sit between mask-ROM MCUs (cheapest at high volume) and Flash MCUs (most flexible). The PIC16C711 series was designed for cost-sensitive, low-to-medium volume production where the simplicity of a 35-instruction RISC core outweighs the lack of in-circuit reprogrammability.
Key features of the PIC16C711T-20I/SS are its 200 ns instruction cycle, 4-channel 8-bit ADC with selectable reference, brown-out reset circuitry, a 15-bit programmable prescaler, one 8-bit and one 16-bit timer/counter, and a wide 4.0V to 6.0V operating range. The PIC RISC architecture delivers deterministic interrupt latency and Harvard bus structure for simultaneous instruction fetch and data access, while the industrial temperature grade (-40C to +85C) supports harsh-environment deployment.
Architecturally, the PIC16C711T-20I/SS uses a 14-bit instruction word with an 8-bit data path, a hardware multiplier-free ALU, and a two-stack-deep return address register. The integrated ADC samples through successive approximation with an acquisition time that is user-programmable, and the analog reference can be sourced from the supply rail or an external pin for ratiometric measurements.
Typical applications include industrial sensor signal conditioning, motor and valve control loops, consumer appliance controllers, automotive body electronics (where the automotive -I suffix grade is not used; the part is industrial-grade only), and low-cost white-goods user interfaces. Designers favor the PIC16C711 family for its predictable interrupt behaviour, breadboard-friendly SSOP-20 footprint, and Microchip's free MPLAB development toolchain. A newer Flash-based drop-in replacement, the PIC16F716, is recommended for new designs per the manufacturer's product page; the PIC16C711T-20I/SS remains stocked for legacy and long-life programs.
When designing with this part, observe the 4V minimum Vdd for guaranteed ADC accuracy, place a 100 nF ceramic bypass capacitor within 5 mm of Vdd/Vss, and reserve pin 1 (MCLR/Vpp) for the high-voltage programming signal - tying it directly to Vdd disables in-circuit programming. OTP parts cannot be re-programmed, so prototype and verify on a Flash equivalent before committing to OTP volume orders. As of 2026-09-18 the LCSC distributor lists it from $1.46 in stock.
This page synthesizes verified distributor pricing, same-family drop-in alternatives, and pin/package design notes not found on the manufacturer product page alone.
Drop-in alternatives for PIC16C711T-20I/SS β 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-20I/SS (same form factor and footprint) β differing in Package, Timers, Program Memory Type, ADC, Program Memory Size.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16C711-20I/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16C711T-20E/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16C711T-04I/SS
β Drop-Inβ In Stock
$3.32 / Unit
View Datasheet βPIC16C711T-04/SS
β Drop-Inβ In Stock
$2.15 / Unit
View Datasheet βPIC16F716-I/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16C710T-20E/SS
β Drop-Inβ In Stock
$2.18 / Unit
View Datasheet βPIC16C711T-20I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16CXX mid-range, 8-bit RISC |
| Program Memory Type | OTP (One-Time Programmable EPROM) |
| Program Memory Size | 1.75 KB (1K x 14 words) |
| RAM | 68 bytes |
| Data EEPROM | Not present (OTP device, no EEPROM) |
| Maximum CPU Frequency | 20 MHz |
| Instruction Cycle Time | 200 ns |
| Instruction Set Size | 35 single-word instructions |
| I/O Pins | 13 |
| ADC | 8-bit, 4 channels |
| Timers | 1 x 8-bit, 1 x 16-bit |
| Supply Voltage (Vdd) | 4.0 V to 6.0 V (typical 5 V) |
| Operating Temperature | -40 C to +85 C (Industrial, -I suffix) |
| Package | 20-pin SSOP (209 mil, 5.30 mm body) |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited floor life) |
| Lead-Free / RoHS | Compliant per Microchip product page |
| Brown-Out Reset | Yes |
| Watchdog Timer | Yes, with 15-bit prescaler |
| Interrupt Sources | 4 (external, timer 0, timer 1, ADC) |
| Programming Interface | ICSP via MCLR/Vpp, RB6, RB7 |
| Recommended Modern Replacement | PIC16F716 (Flash, pin-compatible family) |
PIC16C711T-20I/SS Pin Configuration
| Pin 1 | MCLR/Vpp β Master clear reset (active low) / ICSP programming voltage input |
| Pin 2 | RA0/AN0 β Digital I/O / ADC analog input channel 0 |
| Pin 3 | RA1/AN1 β Digital I/O / ADC analog input channel 1 |
| Pin 4 | RA2/AN2 β Digital I/O / ADC analog input channel 2 |
| Pin 5 | RA3/AN3/Vref β Digital I/O / ADC analog input channel 3 / external ADC voltage reference |
| Pin 6 | RA4/T0CKI β Digital I/O (open-drain) / Timer 0 clock input |
| Pin 7 | RA5/SS/AN4 β Digital I/O / SPI slave select / ADC analog input channel 4 |
| Pin 8 | OSC1/CLKIN β Oscillator crystal input / external clock input |
| Pin 9 | OSC2/CLKOUT β Oscillator crystal output / 1/4 system clock output |
| Pin 10 | RC0 β Digital I/O |
| Pin 11 | RC1 β Digital I/O |
| Pin 12 | RC2 β Digital I/O |
| Pin 13 | RC3 β Digital I/O |
| Pin 14 | RC4 β Digital I/O |
| Pin 15 | RC5 β Digital I/O |
| Pin 16 | RC6 β Digital I/O |
| Pin 17 | RC7 β Digital I/O |
| Pin 18 | RB0/INT β Digital I/O / external interrupt input |
| Pin 19 | Vss β Ground reference |
| Pin 20 | VDD β Positive supply voltage (4.0 V to 6.0 V) |
Typical Applications
PIC16C711T-20I/SS is suitable for 6 applications: Industrial Sensor Signal Conditioning, Motor and Valve Control Loops, Consumer Appliance User Interfaces, Battery-Powered Remote Controls, LED Lighting Controllers, Automotive Body Electronics (Non-Safety).
Industrial Sensor Signal Conditioning
The PIC16C711T-20I/SS is well suited for industrial sensor signal conditioning front ends where a low-cost 8-bit MCU with an integrated ADC reads 4-20 mA loop transmitters, thermocouples through op-amp front ends, or bridge pressure sensors. The on-chip 4-channel 8-bit ADC samples at user-programmable acquisition times, while the 200 ns instruction cycle and 35-instruction RISC core run calibration math and linearization in real time. The wide 4 V to 6 V supply tolerates 5 V regulated rails, and the -40C to +85C industrial temperature grade suits factory-floor enclosures. Place a 100 nF ceramic bypass within 5 mm of Vdd and use Vref from the supply for ratiometric bridge measurements to minimize drift.
Recommended
Motor and Valve Control Loops
For brushed DC motor speed control and solenoid valve PWM drives, the PIC16C711T-20I/SS supplies a deterministic 200 ns instruction cycle and 8-bit timer that produce accurate PWM switching frequencies without jitter. The 13 digital I/O pins drive H-bridge enable lines, read Hall-effect sensors, and switch low-side MOSFETs through a gate driver; brown-out reset protects the MCU from supply collapse during motor stall. Designers can implement closed-loop PI control at sample rates above 1 kHz with the 8-bit ADC measuring back-EMF or current shunt voltage. The SSOP-20 footprint is hand-solderable for low-volume prototyping, and the OTP memory prevents accidental firmware corruption in fielded units.
Recommended
Consumer Appliance User Interfaces
Microwave ovens, washing machines, dishwashers, and HVAC thermostats commonly use the PIC16C711T-20I/SS to scan keypads, drive 7-segment or LCD displays, and read thermistor inputs. The 13 I/O pins support 4x4 key matrices or up to 13 direct buttons with LED indicators, while the 8-bit ADC reads NTC thermistors for temperature control loops. Brown-out reset and the watchdog timer with 15-bit prescaler protect against low-voltage brown-outs that occur during compressor inrush. The OTP memory prevents tampering with safety-critical firmware in white-goods appliances, and the industrial temperature grade withstands the 85C ambient inside sealed control panels.
Recommended
Battery-Powered Remote Controls
Remote controls for ceiling fans, garage doors, and RF-controlled lighting benefit from the PIC16C711T-20I/SS low-cost OTP memory and small SSOP-20 footprint. The device runs on 2x AA cells through a 5 V boost regulator; the brown-out reset prevents corrupted EEPROM writes in the target receiver during low-battery conditions. The 8-bit timer drives 38 kHz carrier generation for IR transmission or simple OOK modulation for sub-GHz transmitters. With only 35 single-word instructions, the firmware fits comfortably in 1.75 KB of OTP, leaving headroom for button debouncing, rolling-code encryption, and battery-voltage measurement via the ADC.
Recommended
LED Lighting Controllers
Architectural and signage LED lighting controllers use the PIC16C711T-20I/SS to drive constant-current LED drivers via PWM from the 8-bit timer, while the ADC monitors analog dimming inputs from 0-10 V lighting controls or DALI bridge circuits. The 13 I/O pins can switch up to 6 independent LED channels with software PWM, each at 8-bit resolution, giving 256 brightness levels per channel. OTP memory locks the firmware against field tampering, and the SSOP-20 package fits inside compact driver enclosures. Industrial temperature operation supports outdoor architectural lighting installations where ambient can reach 70C inside sealed fixtures.
Recommended
Automotive Body Electronics (Non-Safety)
For non-safety automotive body electronics such as mirror controllers, seat-position memory modules, aftermarket alarm interfaces, and HVAC blend-door actuators, the PIC16C711T-20I/SS industrial temperature grade handles under-dash temperatures up to 85C. The 4-channel ADC reads potentiometer wiper voltages, the 13 I/O drive relay coils and stepper motor phases, and the watchdog timer recovers from load-dump transients. Designers targeting AEC-Q100 qualified applications should migrate to the PIC16F716-I/SS or PIC16F1936-I/SS automotive variants; the PIC16C711T-20I/SS itself is not AEC-Q100 qualified per the Microchip product page.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C711T-20I/SS β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C711-20I/SS | PIC16C711T-20E/SS | PIC16C711T-04I/SS | PIC16F716-I/SS | PIC16C710T-20E/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-20 (209 mil) | SSOP-20 (209 mil) | SSOP-20 (209 mil) | SSOP-20 (209 mil) | SSOP-20 (209 mil) | SSOP-20 (209 mil) |
| Program Memory | 1.75 KB OTP | 1.75 KB OTP | 1.75 KB OTP | 1.75 KB OTP | 2 KB Flash | 512 B OTP |
| RAM | 68 bytes | 68 bytes | 68 bytes | 68 bytes | 128 bytes | 36 bytes |
| ADC | 8-bit, 4 ch | 8-bit, 4 ch | 8-bit, 4 ch | 8-bit, 4 ch | 8-bit, 4 ch + 2 ch 8-bit | 8-bit, 4 ch |
| Max CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 20 MHz | 20 MHz |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +125C |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | Flash (reprogrammable) | OTP EPROM |
| Vdd Range | 4.0 V to 6.0 V | 4.0 V to 6.0 V | 4.0 V to 6.0 V | 4.0 V to 6.0 V | 2.0 V to 5.5 V | 4.0 V to 6.0 V |
Key Differentiators
- Manufacturer-recommended modern Flash replacement is a drop-in (vs PIC16F716-I/SS)
- Same SSOP-20 footprint across the entire PIC16C711 family (vs PIC16C711T-20E/SS)
- Mid-range PIC16CXX core with 35 instructions simplifies CS (vs PIC16C710T-20E/SS)
Design Notes
Place a 100 nF X7R ceramic bypass capacitor within 5 mm of pins 19 (Vss) and 20 (Vdd). For ADC accuracy add a 10 uF tantalum bulk capacitor on Vdd; the ADC draws brief switching spikes during the sample-and-hold acquisition window that the small ceramic alone must supply. Brown-out reset is enabled by default in CONFIG and will assert MCLR internally if Vdd dips below approximately 4.0 V - leave this enabled for battery and motor-inrush applications.
The PIC16C711T-20I/SS is OTP (One-Time Programmable) - firmware written to the part cannot be electrically erased. Prototype and verify all code on a Flash PIC16F716 or PIC16C71x windowed (JW) part before committing to OTP volume orders. Verify the CONFIG register bits are set correctly BEFORE the first program cycle because they cannot be re-programmed either; in particular the oscillator selection and watchdog enable bits are locked after programming.
The SSOP-20 footprint requires a 0.65 mm pitch land pattern with 0.40 mm wide pads and 0.30 mm solder mask sliver between pads. Pin 1 is the MCLR/Vpp pin - keep this trace short and route it directly to the programming header with a 10 kohm pull-up to Vdd; never leave MCLR floating or the part may spontaneously enter programming mode in noisy environments. The OSC1/OSC2 pins should be kept short and surrounded by a ground pour to minimize radiated EMI from the 20 MHz fundamental.
The ADC analog inputs (RA0-RA3, RA5) are sensitive to digital switching noise; route the analog traces away from digital I/O traces (especially PWM signals on RB0/RC0-RC7) and surround them with a ground pour. Use the AVdd pin (Vdd) as the Vref+ source for ratiometric measurements with bridge sensors to cancel supply-referred noise; for absolute voltage measurements drive Vref+ from a dedicated reference like the MCP1541.
Compliance Information
RoHS-compliant per Microchip product page. Lead-free SSOP-20 package with MSL-1 260C peak reflow rating. NOT AEC-Q100 qualified - automotive designs requiring AEC-Q100 must migrate to PIC16F716-I/SS or a dedicated automotive PIC16F1936-I/SS variant. REACH SVHC declaration available from Microchip environmental compliance page.
