PIC16C716-20I/SS - 8-Bit 20MHz MCU, 3.5KB OTP, 4-ch ADC | Microchip
MPN: PIC16C716-20I/SS โ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.66 | $26.60 |
| 100 | $2.36 | $236.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.87 | $1,870.00 |
PIC16C716-20I/SS Overview
Background Knowledge: An 8-bit microcontroller (MCU) is a small, self-contained computing engine optimized for embedded control. The PIC16C family uses a Harvard-architecture RISC core with a small, deterministic instruction set, positioning it in the hierarchy: microcontroller -> 8-bit MCU -> PIC16C family -> CMOS RISC -> embedded processor -> semiconductor. PIC16C716 specifically adds on-chip analog (4-channel 8-bit ADC) and a Capture/Compare/PWM (CCP) peripheral, bridging pure digital logic and real-world analog signals.
Key features of the PIC16C716-20I/SS include 4 channels of 8-bit Analog-to-Digital conversion, an enhanced Capture/Compare/PWM module for timing-critical applications, two additional timers (Timer0, Timer1, Timer2), a watchdog timer, and brown-out reset. The 13 I/O pins are 5V-tolerant and can source/sink up to 25 mA per pin, supporting direct LED drive and small-signal interface. The OTP program memory offers faster prototyping than masked-ROM parts but requires one-time programming before deployment.
From an architectural perspective, the PIC16C716 uses a 14-bit instruction word and a 35-instruction set, allowing compact C and assembly code generation. The integrated ADC uses a successive-approximation register (SAR) topology with analog input multiplexing across 4 channels, eliminating external ADC ICs in many sensor-interface designs. The CCP module supports PWM frequency and duty-cycle control for motor, lighting, and power-conversion applications.
Typical applications include automotive sensor conditioning, industrial appliance control (washing machines, HVAC), consumer device user interfaces, and motor-speed controllers. The combination of on-chip ADC and PWM in a single 20-pin footprint suits space-constrained designs that previously required multiple ICs.
When designing with this part, ensure the OTP programming step is finalized before volume production, and budget for an external in-circuit serial programmer (ICSP) header. Decouple VDD with a 100 nF ceramic capacitor close to the pin, and respect the 25 mA per-pin and 200 mA package absolute maximums to avoid latch-up.
This page synthesizes distributor pricing, drop-in PIC16C family alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16C716-20I/SS โ same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool โ Select alternative parts for side-by-side comparison:
PIC16C716-20/SS
โ Drop-In๐ Reference alternative (not in catalog)
PIC16F716-I/SS
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PIC16C712-20I/SS
โ Drop-In๐ Reference alternative (not in catalog)
PIC16C715-20I/SS
โ Drop-In๐ Reference alternative (not in catalog)
PIC16C711-20I/SS
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PIC16C710-20I/SS
โ Drop-Inโ In Stock
$1.61 / Unit
View Datasheet โPIC16C716-20I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC16C RISC (Harvard) |
| Instruction Set Width | 14-bit |
| Maximum Clock Frequency | 20 MHz |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM | 128 bytes |
| I/O Pins | 13 |
| ADC | 4 channels x 8-bit |
| Capture/Compare/PWM | 1 CCP module |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Watchdog Timer | Yes |
| Brown-out Reset | Yes |
| Supply Voltage | 5 V nominal |
| Operating Temperature | -40C to +85C (Industrial, "I") |
| Package | 20-pin SSOP (5.30 mm body width) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant (lead-free "SS" suffix) |
PIC16C716-20I/SS Pin Configuration
| Pin 1 | MCLR/VPP โ Reset input / ICSP programming voltage |
| Pin 2 | RA0/AN0 โ Digital I/O / Analog channel 0 input |
| Pin 3 | RA1/AN1 โ Digital I/O / Analog channel 1 input |
| Pin 4 | RA2/AN2 โ Digital I/O / Analog channel 2 input |
| Pin 5 | RA3/AN3/VREF โ Digital I/O / Analog channel 3 / ADC voltage reference |
| Pin 6 | RA4/T0CKI โ Digital I/O / Timer0 clock input |
| Pin 7 | RA5/SS/AN4 โ Digital I/O / Slave select / Analog channel 4 |
| Pin 8 | OSC1/CLKIN โ Crystal oscillator input / external clock |
| Pin 9 | OSC2/CLKOUT โ Crystal oscillator output / clock output |
| Pin 10 | RC0/T1OSO/T1CKI โ Digital I/O / Timer1 oscillator output / clock input |
| Pin 11 | RC1/T1OSI/CCP2 โ Digital I/O / Timer1 oscillator input / CCP2 |
| Pin 12 | RC2/CCP1 โ Digital I/O / Capture/Compare/PWM channel 1 |
| Pin 13 | RC3 โ Digital I/O |
| Pin 14 | RC4 โ Digital I/O |
| Pin 15 | RC5 โ Digital I/O |
| Pin 16 | RC6 โ Digital I/O |
| Pin 17 | RC7 โ Digital I/O |
| Pin 18 | RB0/INT โ Digital I/O / External interrupt |
| Pin 19 | VDD โ Positive supply (5V nominal) |
| Pin 20 | VSS โ Ground reference |
Typical Applications
PIC16C716-20I/SS is suitable for 6 applications: Industrial Sensor Interface, Automotive A/D Monitoring Modules, Consumer Appliance Control, Motor Speed Control (PWM), LED Lighting Dimming Controllers, Battery-Powered Data Acquisition.
Industrial Sensor Interface
The PIC16C716-20I/SS fits industrial sensor-interface boards because its 4-channel 8-bit SAR ADC directly digitizes analog signals from temperature, pressure, or level transducers, eliminating external ADC ICs. The 13 I/O pins source 25 mA each, driving relay coils or LED indicators without buffers. Industrial-grade -40C to +85C operation tolerates factory-floor enclosures. A typical circuit uses PORTA pins RA0-RA3 as ADC inputs and PORTB pins RB0-RB7 for digital I/O, with the CCP module generating PWM control signals for valve or motor actuators. Compared to a discrete ADC-plus-MCU solution, the PIC16C716 saves PCB area and BOM cost by integrating 3.5KB of OTP program memory, watchdog timer, and brown-out reset on a single die. The 20 MHz clock and 14-bit RISC instruction set execute sensor-sampling loops in well under 100 us per channel.
Recommended
Automotive A/D Monitoring Modules
The PIC16C716-20I/SS serves automotive sensor-conditioning modules where 4 channels of 8-bit ADC capture throttle-position, coolant-temperature, and battery-voltage signals. The integrated CCP module produces PWM waveforms for actuator drive, while 13 robust I/O lines switch indicator lamps and relay coils at 25 mA. Although the I-grade temperature rating tops out at +85C (not full automotive -40C to +125C), it is well suited to cabin and underbody applications that don't exceed that limit. The OTP program memory locks firmware at production time, preventing field tampering. Compared to a PIC16F baseline, the OTP variant reduces per-unit cost in high-volume automotive ECU variants where firmware is fixed.
Recommended
Consumer Appliance Control
Washing machines, microwave ovens, and HVAC controllers benefit from the PIC16C716-20I/SS's combination of on-chip ADC, CCP-based PWM, and 13 GPIO. The CCP module generates PWM at frequencies up to several kHz for motor-speed or heater-power control, while the ADC reads user-knob position or thermistor input. 128 bytes of RAM handle modest state-machine logic, and the 3.5 KB OTP program memory accommodates a complete appliance control algorithm. Brown-out reset prevents erratic behavior during power-line brownouts common in residential mains. Compared to a logic-only MCU plus external ADC, the integrated design lowers BOM cost by 30-40% while simplifying PCB layout in space-constrained appliance chassis.
Recommended
Motor Speed Control (PWM)
Brushless-DC and small brushed-DC motor control circuits leverage the PIC16C716-20I/SS's Capture/Compare/PWM module, which generates PWM up to 20 MHz timer tick resolution with adjustable duty cycle. The 4-channel 8-bit ADC samples motor current or back-EMF for closed-loop speed control, while 13 I/O pins drive gate-driver ICs and Hall-effect sensor inputs. The 20 MHz instruction cycle produces 200 ns resolution for fast-loop response in servo applications. Compared to a dedicated motor-controller IC, this MCU-based approach offers programmable acceleration/deceleration curves and adaptive control without hardware redesign.
Recommended
LED Lighting Dimming Controllers
Architectural and decorative LED dimmer modules use the PIC16C716-20I/SS's PWM peripheral to generate smooth 0-100% duty-cycle dimming at frequencies above 100 Hz, avoiding flicker. The 13 GPIO can simultaneously control multiple LED channels and read user-input buttons or potentiometers via the 8-bit ADC. The 3.5 KB OTP program memory stores dimming curves and color-mixing algorithms for RGB fixtures. Compared to a 555-timer-based dimmer, the MCU approach offers programmable fade rates, DMX-style digital input parsing, and remote-control interfacing in a single 20-pin SSOP footprint.
Recommended
Battery-Powered Data Acquisition
Portable data-logging instruments use the PIC16C716-20I/SS for periodic sampling of analog sensors with on-chip ADC, then store readings to external EEPROM via the I/O pins. The 128-byte RAM buffers samples between write cycles, and the watchdog timer wakes the MCU from sleep at programmable intervals to extend battery life. Brown-out reset prevents corrupted data writes during battery end-of-life voltage sag. Compared to a continuous-conversion ADC front-end, the duty-cycled sampling approach reduces average current to under 1 mA on a 5V supply. The 20-pin SSOP footprint suits handheld instrument enclosures.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C716-20I/SS โ comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C716-20/SS | PIC16F716-I/SS | PIC16C712-20I/SS | PIC16C715-20I/SS | PIC16C711-20I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin SSOP | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same |
| Program Memory Type | OTP, 3.5 KB (2K x 14) | OTP, 3.5 KB | Flash, 3.5 KB | OTP, 2 KB (1K x 14) | OTP, 3.5 KB | OTP, 1.75 KB (1K x 14) |
| ADC Channels | 4 x 8-bit | 4 x 8-bit | 4 x 8-bit | 4 x 8-bit | None | 4 x 8-bit |
| CCP/PWM Module | Yes (1 module) | Yes | Yes | Yes | Yes | Yes |
| I/O Pins | 13 | 13 | 13 | 13 | 13 | 13 |
| Temperature Range | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Maximum Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
Key Differentiators
- Integrated 4-channel 8-bit ADC plus CCP/PWM in one 20-pin package (vs PIC16C715-20I/SS)
- OTP vs. Flash memory for production cost optimization (vs PIC16F716-I/SS)
- 3.5 KB program memory for richer control algorithms (vs PIC16C712-20I/SS)
Design Notes
Decouple VDD (pin 19) with a 100 nF ceramic capacitor placed within 5 mm of the supply pad, and add a 10 uF bulk capacitor on the board's 5V rail. The PIC16C716-20I/SS draws up to 25 mA on each I/O line and 200 mA total package dissipation; respect the absolute maximums to prevent latch-up. Brown-out reset (BOR) is enabled by configuration bit and triggers when VDD falls below approximately 4.0 V, resetting the MCU before unpredictable code execution at low supply.
Route the crystal oscillator traces (OSC1/OSC2, pins 8-9) as short, symmetrical loops with a grounded guard ring. Place the crystal within 5 mm of the MCU and keep digital signal traces away from the oscillator area to minimize EMI coupling. The SSOP-20 footprint requires 0.65 mm pitch solder pads; use a 4-mil solder stencil aperture to prevent solder bridges on fine-pitch leads.
Do not program the OTP array without a final, validated firmware image - OTP cannot be erased and a programming error is permanent. Always verify the configuration bits (oscillator selection, watchdog enable, BOR voltage, code protection) before bulk programming. When migrating to the PIC16F716-I/SS, ensure the application does not rely on OTP lock behavior since Flash parts are reprogrammable and may need read-protect bits for security.
The 4-channel 8-bit ADC shares input pins with PORTA digital I/O. When using RA0-RA3 as analog inputs, disable digital input buffers on those pins via the ADCON1 register to reduce crosstalk and improve ADC accuracy to within +/- 1 LSB. Add a 100 nF bypass capacitor at each analog sensor output, and keep analog traces away from switching digital signals on PORTB to minimize ADC noise pickup.
Compliance Information
RoHS compliant per Microchip product page ("SS" suffix indicates lead-free SSOP). Not AEC-Q100 qualified; for full automotive -40C to +125C operation use PIC16C716-20E/SS instead.
