PIC16C711T-04/SO - 8-Bit 4MHz OTP MCU 1.75KB | Microchip
MPN: PIC16C711T-04/SO ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.95 | $3.95 |
| 10 | $3.55 | $35.50 |
| 100 | $3.1 | $310.00 |
| 500 | $2.75 | $1,375.00 |
| 1,000 | $2.4 | $2,400.00 |
PIC16C711T-04/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + data), and programmable I/O peripherals into one package. The PIC16C711 sits within the broader taxonomy: microcontroller -> embedded processor -> integrated circuit -> semiconductor. OTP MCUs are programmed once via dedicated programmers and retain code without a battery, distinguishing them from flash-based parts. Mid-range PIC MCUs target cost-sensitive, deterministic control applications where simplicity, low cost, and predictable interrupt latency outweigh large memory footprints.
Key features of the PIC16C711 include four channels of 8-bit A/D conversion with on-chip sample-and-hold, an internal 4MHz RC oscillator option, power-on reset, watchdog timer with on-chip RC oscillator, code protection, and a wide operating voltage range that supports both 5V regulated and battery-powered designs. The 'T-04' suffix denotes tape-and-reel packaging and the 4MHz speed grade, while the 'I' or 'E' variants extend the industrial temperature range to -40C to +125C. The SOIC-18 footprint is one of the most common surface-mount 8-bit MCU packages, allowing hand-prototyping and reflow assembly.
Architecturally, the PIC16C711 uses a 14-bit instruction word, an 8-bit data path, and a two-stage pipeline, giving an effective throughput of 5 MIPS at 20MHz. The Harvard-style separate program and data buses allow the next instruction to be fetched while the current one executes, a hallmark of PIC performance efficiency. The integrated ADC draws from a dedicated reference and the device's VDD rail, simplifying sensor-interface designs that previously required an external converter.
Typical applications for the PIC16C711T-04/SO include consumer appliance control, automotive interior modules, sensor signal conditioning, simple motor control loops, security alarm keypads, HVAC damper drivers, low-cost battery chargers, and embedded educational platforms. The 5V operating point and 13 I/O pins make it well suited to interfacing 5V logic peripherals and analog sensor front-ends without level translation. Microchip explicitly recommends the flash-based PIC16F716 as a modern, drop-in-compatible replacement for new designs.
When designing with this part, ensure programmer compatibility (PICSTART Plus, MPLAB PM3, or third-party OTP programmers) and confirm that your tool chain supports OTP mid-range PIC devices. Because OTP cannot be reprogrammed, allocate engineering time to in-system emulation via MPLAB ICE or a PIC16F716 flash equivalent during firmware bring-up before committing the OTP one-time programming budget.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet. Lifecycle warnings from Microchip and current distributor stock signals are summarized below.
Drop-in alternatives for PIC16C711T-04/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-04/SO (same form factor and footprint) — differing in Operating Temperature, Package, ADC, Program Memory Size, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C711T-04I/SO
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16C711T-04E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C711-04E/SO
✅ Drop-In✓ In Stock
$1.71 / Unit
View Datasheet →PIC16F716-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C711-20I/SO
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →PIC16C711T-04/SO Maximum Ratings & Electrical Characteristics
| Manufacturer | Microchip Technology |
| Series | PIC 16C |
| Core Processor | PIC16 |
| Core Size | 8-bit |
| Max Clock Speed | 4 MHz |
| Instruction Cycle | 200 ns |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 1.75 KB (1K x 14) |
| RAM Size | 68 bytes |
| Number of I/O Pins | 13 |
| ADC | 4 channels x 8-bit, with on-chip sample-and-hold |
| Supply Voltage | 3.0 V to 5.5 V (typical 5 V operation) |
| Operating Temperature | 0 C to +70 C (commercial; 'I' variant -40 C to +85 C; 'E' variant -40 C to +125 C) |
| Package | 18-pin SOIC (SOIC-18, 0.300 inch / 7.5 mm body) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
PIC16C711T-04/SO Pin Configuration
| Pin 1 | RA2/AN2 — Bidirectional I/O / analog channel 2 |
| Pin 2 | RA3/AN3/VREF — Bidirectional I/O / analog channel 3 / ADC voltage reference |
| Pin 3 | RA4/T0CKI — Bidirectional I/O / Timer 0 clock input (open-drain) |
| Pin 4 | MCLR/VPP — Master clear reset / programming voltage input |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0/INT — Bidirectional I/O / external interrupt input |
| Pin 7 | RB1 — Bidirectional I/O |
| Pin 8 | RB2 — Bidirectional I/O |
| Pin 9 | RB3 — Bidirectional I/O |
| Pin 10 | RB4 — Bidirectional I/O |
| Pin 11 | RB5 — Bidirectional I/O |
| Pin 12 | RB6 — Bidirectional I/O / serial programming clock |
| Pin 13 | RB7 — Bidirectional I/O / serial programming data |
| Pin 14 | VDD — Positive supply (3.0 V to 5.5 V) |
| Pin 15 | OSC2/CLKOUT — Crystal/oscillator output / Fosc/4 clock output |
| Pin 16 | OSC1/CLKIN — Crystal/oscillator input / external clock input |
| Pin 17 | RA0/AN0 — Bidirectional I/O / analog channel 0 |
| Pin 18 | RA1/AN1 — Bidirectional I/O / analog channel 1 |
Typical Applications
PIC16C711T-04/SO is suitable for 6 applications: Consumer Appliance Control, Automotive Interior Modules, Sensor Signal Conditioning, Security and Alarm Keypads, Battery Charger Controllers, Educational and Hobby Platforms.
Consumer Appliance Control
The PIC16C711T-04/SO fits consumer appliance control thanks to its 5V operation, 13 digital I/O pins, and integrated 4-channel 8-bit ADC. Its 4 MHz oscillator and 35-instruction RISC core deliver deterministic control loops ideal for washing-machine controllers, microwave oven user interfaces, and small kitchen appliances. Unlike flash MCUs, the OTP memory reduces per-unit cost once firmware is finalized, while the 4-channel ADC reads thermistor, weight, and humidity sensors directly, eliminating an external converter. The wide 3.0-5.5V supply range also tolerates rectified mains-derived rails typical in appliance designs.
Recommended
Automotive Interior Modules
The PIC16C711T-04/SO suits automotive interior modules such as HVAC flap drivers, seat position controllers, and lighting dimmers. The 4 MHz clock, 200ns instruction cycle, and 13 I/O lines give deterministic control over stepper or DC motors, while the 4-channel ADC reads position feedback and temperature sensors. The industrial-grade 711T-04I/SO variant extends the temperature range to -40 C to +85 C, meeting the cabin environment envelope. Although automotive safety-critical systems require Q-100 certified parts, the 711 platform remains useful for non-safety interior convenience features.
Recommended
Sensor Signal Conditioning
The PIC16C711T-04/SO operates as a low-cost sensor signal conditioner, using its 4-channel 8-bit ADC to digitize analog front-end signals and its 13 I/O pins to drive calibration relays or status LEDs. The 5V supply and 0-5V ADC input range pair naturally with sensors that output 0-5V ratiometric signals, such as potentiometric position sensors, photo-diodes with transimpedance amplifiers, and low-cost strain gauges. Firmware running on the 35-instruction RISC core applies linearization, averaging, and threshold comparisons before driving a 4-20mA loop or PWM output.
Recommended
Security and Alarm Keypads
The PIC16C711T-04/SO is a strong fit for security alarm keypads and simple access-control panels. Its 13 I/O pins matrix-scan a 4x4 keypad (using 8 lines) and drive status LEDs, piezo buzzers, and a relay output for the door strike. The 1.75KB OTP memory stores the keypad map and PIN-validation logic, while the 4-channel ADC supports battery monitoring on the backup cell. The OTP architecture reduces reverse-engineering risk, an advantage for anti-tamper applications. Low standby current and the 3-5.5V operation preserve battery life.
Recommended
Battery Charger Controllers
The PIC16C711T-04/SO can manage low-power NiMH or lead-acid battery chargers by combining its 8-bit ADC for voltage and current sensing, its 13 I/O pins for relay/PFET control, and the deterministic 4 MHz core for closed-loop PWM regulation. Charge states (trickle, bulk, absorption, float) fit comfortably in the 1.75KB OTP program space along with temperature-compensation tables. The wide supply range tolerates direct connection to a 6V or 12V nominal source after external regulation. The OTP one-time-programmable nature prevents field firmware tampering that could overcharge cells.
Recommended
Educational and Hobby Platforms
The PIC16C711T-04/SO is widely used in undergraduate embedded systems and hobbyist projects because the PIC16 mid-range architecture is simple (35 instructions, 14-bit words), well-documented, and supported by free MPLAB X IDE toolchains. The 18-pin SOIC package is breadboard-friendly with adapter boards, while the on-chip ADC lets students explore analog interfacing without external chips. PICkit programmers and PICSTART Plus support OTP programming in teaching labs. The 4 MHz instruction cycle provides a 200ns time base that is straightforward to reason about in assembly tutorials.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C711T-04/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C711T-04I/SO | PIC16C711T-04E/SO | PIC16C711-04E/SO | PIC16F716-I/SO | PIC16C711-20I/SO |
|---|---|---|---|---|---|---|
| Package | SOIC-18 (0.300 in) | SOIC-18 (0.300 in) - same | SOIC-18 (0.300 in) - same | SOIC-18 (0.300 in) - same | SOIC-18 (0.300 in) - same | SOIC-18 (0.300 in) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP 1.75 KB | OTP 1.75 KB | OTP 1.75 KB | OTP 1.75 KB | Flash (reprogrammable) | OTP 1.75 KB |
| Max Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 20 MHz |
| RAM Size | 68 bytes | 68 bytes | 68 bytes | 68 bytes | 128 bytes | 68 bytes |
| Number of I/O Pins | 13 | 13 | 13 | 13 | 13 | 13 |
| ADC | 4 ch x 8-bit | 4 ch x 8-bit | 4 ch x 8-bit | 4 ch x 8-bit | 5 ch x 8-bit | 4 ch x 8-bit |
| Operating Temperature | 0 C to +70 C (commercial) | -40 C to +85 C (industrial) | -40 C to +125 C (extended) | -40 C to +125 C (extended) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) |
| Lifecycle Status | NRND | NRND | NRND | NRND | Active | NRND |
Key Differentiators
- Tape-and-reel packaging for high-volume SMT assembly (vs PIC16C711-04E/SO (tube packaging))
- Commercial temperature grade suited to indoor products (vs PIC16C711T-04E/SO (extended -40 to +125 C))
- 4 MHz speed grade is sufficient for slow control loops and reduces EMI (vs PIC16C711-20I/SO (20 MHz grade))
Design Notes
Because the PIC16C711 is OTP (one-time-programmable), firmware must be fully verified in silicon via an MPLAB ICE emulator or a flash-based stand-in (PIC16F716) before committing to a programming slot. A single bad bit in production OTP programming renders the device unusable; in 2026 supply conditions with NRN-D status, each wasted part represents a $3-4 yield loss. Recommended: build a small PIC16F716 prototype, then port the final HEX to the OTP 711 only after firmware freeze.
The PIC16C711T-04/SO operates from 3.0 V to 5.5 V, with a typical 5V design drawing approximately 2-5 mA active and under 1 uA in sleep. Place a 100 nF decoupling capacitor within 5 mm of the VDD pin and a bulk 10 uF electrolytic at the regulator output to suppress digital switching noise. The MCLR/VPP pin requires a 10 kohm pull-up to VDD for normal operation; if not used in-circuit, ensure the programmer can drive VPP to 13V during programming.
The 18-pin SOIC footprint is one of the most common surface-mount packages and reflows cleanly on standard lead-free profiles (peak 245 C, 60 s above 217 C). Recommended pad dimensions: 1.27 mm pitch, 0.55 mm pad width, 2.0 mm pad length. Use a ground plane on the bottom layer directly under the MCU to provide a low-impedance return path for the ADC reference and to improve noise immunity on analog inputs AN0-AN3.
Route the analog inputs AN0-AN3 and the VREF pin away from digital switching traces (OSC, RB port edges) to minimize ADC noise coupling. Add a small RC filter (1 kohm + 100 pF) on each analog input to suppress MHz-range noise. Keep the crystal or ceramic resonator within 5 mm of OSC1/OSC2 to avoid stray capacitance, and route the MCLR trace as short as possible to maintain reset integrity in noisy environments.
Compliance Information
RoHS, lead-free, and REACH status are not specified in the verified web data. The PIC16C711 family is not AEC-Q100 qualified; automotive applications should use AEC-Q100 qualified PIC16F equivalents.
