PIC16C716-04I/SO - 8-Bit 4MHz OTP MCU, 3.5KB, 13 I/O | Microchip
MPN: PIC16C716-04I/SO β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.77 | $3.77 |
| 10 | $3.39 | $33.90 |
| 100 | $2.84 | $284.00 |
| 500 | $2.42 | $1,210.00 |
| 1,000 | $2.18 | $2,180.00 |
PIC16C716-04I/SO Overview
An 8-bit microcontroller (MCU) is a small, single-chip computer that integrates a CPU, RAM, program memory, and peripheral set on one die. Microcontrollers in the PIC16C family use a Harvard RISC core with 35 single-word instructions, are ROM/EPROM/OTP-programmed, and serve embedded control roles ranging from appliance user interfaces to automotive body controllers. The PIC16C716 sits in the mid-range PIC16 lineage - upwards compatible with PIC16C5X and PIC12CXXX devices - and is positioned for cost-sensitive A/D applications in automotive, industrial, appliance, and consumer markets.
Key differentiating features include: 4 channels of 8-bit ADC; 13 bidirectional I/O pins; integrated CCP (Capture/Compare/PWM) module for timing-based control; watchdog timer with on-chip RC oscillator for safe recovery from code lockup; power-on reset (POR), power-up timer (PWRT), and brown-out reset (BOR) for reliable start-up; in-circuit serial programming (ICSP) via two pins; and wide 2.5 V to 5.5 V operating voltage. The industrial temperature grade ("-I") supports -40Β°C to +85Β°C operation. According to the Microchip product page, this combination of analog and timing peripherals makes the part ideal for "more advanced level A/D applications."
Architecturally, the device uses an 8-level deep hardware stack, an 8-bit data path, and a 14-bit instruction word with 200 ns instruction cycle at 4 MHz. The OTP program memory uses EPROM cells, so each part can be programmed once - suitable for low- to mid-volume production but less flexible than flash-based PIC16F equivalents such as the PIC16F716-I/SO.
Typical applications include sensor signal conditioning with PWM-driven actuators, automotive sensor interfaces, industrial control front-ends, appliance user-interface boards, and consumer product subsystems that need ADC + timing peripherals. The CCP module enables motor speed or LED brightness control without external hardware.
When designing with this part, note that OTP memory requires mask/one-time programming - for prototypes or low-volume runs, prefer the flash-based PIC16F716-I/SO. Decouple VDD with 100 nF + 10 uF ceramic capacitors placed close to the pins, and reserve the MCLR/VPP pin for in-circuit serial programming access.
This page synthesizes distributor pricing, drop-in alternatives, application guidance, and design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16C716-04I/SO 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 PIC16C716-04I/SO (same form factor and footprint) β differing in ADC, Package, Timers, I/O Pins, RoHS Status.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F716-I/SO
β Drop-Inπ Reference alternative (not in catalog)
PIC16C716-04/SO
β Drop-Inπ Reference alternative (not in catalog)
PIC16C716-04E/SO
β Drop-Inβ In Stock
$1.89 / Unit
View Datasheet βPIC16C716-04I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16C - 8-bit RISC |
| Instruction Set | 35 single-word instructions |
| Program Memory Type | OTP (One-Time-Programmable EPROM) |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM Size | 128 bytes |
| Maximum CPU Speed | 4 MHz (200 ns instruction cycle) |
| Operating Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 13 bidirectional |
| ADC | 4 channels, 8-bit resolution |
| Timers | Timer0 (8-bit), Timer1 (16-bit), Timer2 (8-bit) |
| CCP Module | 1 x Capture / Compare / PWM |
| Watchdog Timer | Yes, with on-chip RC oscillator |
| Brown-out Reset (BOR) | Yes |
| Power-on Reset / PWRT | Yes |
| In-Circuit Serial Programming (ICSP) | Yes |
| Operating Temperature Range | -40 C to +85 C (industrial grade) |
| Package | 18-pin SOIC (0.295" / 7.50 mm width) |
| Mounting Type | Surface Mount |
| RoHS Status | unknown |
| Lead-Free / Halogen-Free | unknown |
PIC16C716-04I/SO Pin Configuration
| Pin 1 | RA0/AN0 β PORTA bit 0 / Analog input channel 0 |
| Pin 2 | RA1/AN1 β PORTA bit 1 / Analog input channel 1 |
| Pin 3 | RA2/AN2 β PORTA bit 2 / Analog input channel 2 |
| Pin 4 | RA3/AN3/VREF β PORTA bit 3 / Analog input channel 3 / ADC voltage reference |
| Pin 5 | RA4/T0CKI β PORTA bit 4 (open-drain) / Timer0 clock input |
| Pin 6 | OSC1/CLKIN β Crystal oscillator input / external clock input |
| Pin 7 | OSC2/CLKOUT β Crystal oscillator output / clock output (Fosc/4) |
| Pin 8 | MCLR/VPP β Master Clear reset input (active low) / programming voltage |
| Pin 9 | VSS β Ground reference |
| Pin 10 | VDD β Positive supply voltage (2.5 V to 5.5 V) |
| Pin 11 | RB0/INT β PORTB bit 0 / external interrupt input |
| Pin 12 | RB1 β PORTB bit 1 |
| Pin 13 | RB2 β PORTB bit 2 |
| Pin 14 | RB3/PGM β PORTB bit 3 / low-voltage programming enable |
| Pin 15 | RB4 β PORTB bit 4 (interrupt-on-change) |
| Pin 16 | RB5 β PORTB bit 5 (interrupt-on-change) |
| Pin 17 | RB6/PGC β PORTB bit 6 (interrupt-on-change) / ICSP clock |
| Pin 18 | RB7/PGD β PORTB bit 7 (interrupt-on-change) / ICSP data |
Typical Applications
PIC16C716-04I/SO is suitable for 6 applications: Automotive Sensor Interface Module, Industrial Process Controller Front-End, White Goods and Appliance Control Board, Consumer Electronics Sub-System Controller, Battery-Powered Portable Measurement Device, Educational and Hobby Electronics Platform.
Automotive Sensor Interface Module
The PIC16C716-04I/SO is well suited for automotive body and chassis sensor interfaces that require analog sensing plus PWM-driven actuator control. Its 4-channel 8-bit ADC can read thermistor, pressure, or position sensors at up to 19.5 us conversion time at 4 MHz, while the CCP module generates PWM signals to drive small motors, solenoids, or LED indicators. The industrial -40 C to +85 C temperature grade covers most under-hood environments. According to the Microchip product page, the part targets "more advanced level A/D applications" in automotive. Brown-out reset and watchdog timer ensure recovery from voltage transients on the vehicle battery rail.
Recommended
Industrial Process Controller Front-End
In industrial control panels, the PIC16C716-04I/SO serves as a signal-conditioning front-end that converts 4-20 mA or 0-10 V process variables into digital values via its 8-bit ADC and drives relays or solid-state switches via PWM. The 35-instruction RISC core executes control loops at 4 MHz with a 200 ns instruction cycle, sufficient for PID updates in slow process loops. According to the manufacturer datasheet, the wide 2.5 V to 5.5 V supply range supports both 3.3 V and 5 V field-bus transceivers. The in-circuit serial programming (ICSP) interface allows firmware updates during commissioning.
Recommended
White Goods and Appliance Control Board
The PIC16C716-04I/SO integrates the ADC and PWM peripherals required by modern washing machines, dishwashers, and microwave oven user interfaces. Its 13 I/O pins drive 7-segment displays, keypads, status LEDs, and buzzer drivers, while the ADC reads water level, temperature, or humidity sensors. The CCP module generates PWM for variable-speed drum motors or inverter-driven compressors. OTP memory locks the firmware at production, preventing field tampering. According to the Microchip product page, the part targets "appliances" with its combination of analog and timing peripherals.
Recommended
Consumer Electronics Sub-System Controller
For consumer products such as coffee makers, air purifiers, and small kitchen appliances, the PIC16C716-04I/SO provides a low-cost control brain. The 4 MHz instruction rate, 8-bit ADC, and 13 I/O pins cover most user-interface and sensor-fusion tasks. The hardware CCP PWM simplifies LED dimming or fan-speed control without external timers. According to the manufacturer datasheet, only 35 single-word instructions need to be learned, lowering firmware development cost. OTP memory at production volume is cheaper than flash, which suits high-volume consumer runs.
Recommended
Battery-Powered Portable Measurement Device
Handheld instruments such as digital thermometers, multimeters, and portable gas detectors leverage the PIC16C716-04I/SO low-power CMOS design and 2.5 V to 5.5 V supply range. Brown-out reset protects against low-battery conditions, and the watchdog timer recovers the MCU from software lockups. The 4-channel ADC reads multiple sensor inputs (thermocouple, RTD, electrochemical cell) while the CCP module drives a piezo buzzer or backlight PWM. Industrial -40 C to +85 C temperature operation handles outdoor and industrial portable use.
Recommended
Educational and Hobby Electronics Platform
The PIC16C716-04I/SO is documented in Microchip application notes as a teaching example for RISC MCU architecture, with only 35 instructions to learn. University embedded-systems courses, hobbyist robots, and DIY electronics projects use the part because of its low cost, simple ICD programming, and built-in ADC + PWM peripherals. In-circuit serial programming (ICSP) lets students reprogram the part via a PICkit programmer without removing it from the breadboard. Although OTP limits field updates, the price point makes it viable for educational kits.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C716-04I/SO β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F716-I/SO | PIC16C716-04/SO | PIC16C716-04E/SO |
|---|---|---|---|---|
| Package | 18-SOIC | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP (3.5 KB / 2K x 14) | Flash (3.5 KB) | OTP (3.5 KB) | OTP (3.5 KB) |
| Maximum CPU Speed | 4 MHz | 20 MHz | 4 MHz | 4 MHz |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | 0 C to +70 C (commercial) | -40 C to +125 C (extended) |
| RAM Size | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| ADC Channels / Resolution | 4 ch / 8-bit | 4 ch / 8-bit | 4 ch / 8-bit | 4 ch / 8-bit |
| I/O Pins | 13 | 13 | 13 | 13 |
| CCP Module | 1 x (Capture/Compare/PWM) | 1 x CCP | 1 x CCP | 1 x CCP |
| Lifecycle Status | NRND | Active | NRND | NRND |
Key Differentiators
- Reprogrammable flash memory with identical peripheral set (vs PIC16F716-I/SO)
- Industrial temperature grade for harsh environments (vs PIC16C716-04/SO)
- Integrated 4-channel ADC plus PWM in one 18-pin package (vs PIC16F716-I/SO)
Design Notes
Estimated: PIC16C716-04I/SO active current at 4 MHz and 5 V is approximately 2 mA typical, rising to 5 mA at full peripheral activity. Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of the VDD pin and a bulk 10 uF tantalum or ceramic capacitor on the same rail. Brown-out reset (BOR) must be enabled in the configuration word to ensure the MCU stays in reset when VDD drops below 2.0 V to 4.0 V, preventing code execution from unstable memory cells.
Keep the 4 MHz crystal or resonator traces between OSC1 and OSC2 short (under 10 mm) and guard them with a ground pour to reduce EMI pickup. Place the ICSP connector footprint (PGC on RB6, PGD on RB7, MCLR/VPP) at the board edge so a PICkit programmer can clip on without removing the MCU. MCLR must have a 10 kohm pull-up to VDD and a 100 nF cap to ground for clean reset behaviour.
OTP memory means each part can be programmed ONCE - a misconfigured configuration word (e.g., wrong oscillator mode, watchdog disabled) cannot be erased. Always verify the configuration word in your programmer software before programming production units. The 4 MHz max clock on the -04 speed grade means 200 ns instruction cycle; if your control loop requires faster execution, step up to PIC16C716-20 or PIC16F716-I/SO (20 MHz).
The RA4 pin is open-drain and requires an external pull-up resistor (typically 10 kohm) when used as a digital output. The ADC inputs share pins with PORTA digital I/O - configure ADCON1 to disable digital input buffers on analog pins to prevent crowbar current through the Schmidt trigger when the analog signal is near VDD/2. Sample acquisition time must be programmed based on source impedance; for 10 kohm source impedance, use at least 19.72 us acquisition time per datasheet.
Compliance Information
RoHS/lead-free/halogen status not confirmed in the verified web data - set to unknown. AEC-Q100 automotive qualification not stated for the -04I/SO industrial grade; Microchip does not list the PIC16C716 family as AEC-Q100 qualified. Conflict-minerals compliance inferred from Microchip's standard corporate policy.
