PIC16C712-04I/SO - 8-bit OTP MCU 1.75KB 4MHz 18-SOIC | Microchip
Référence : PIC16C712-04I/SO ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $6.2 | $6,20 |
| 10 | $5.55 | $55,50 |
| 100 | $4.9 | $490,00 |
| 500 | $4.32 | $2 160,00 |
| 1 000 | $3.85 | $3 850,00 |
PIC16C712-04I/SO Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + data), and programmable peripherals. MCUs form the lowest tier of the embedded computing hierarchy: microcontroller -> embedded processor -> system-on-chip (SoC) -> computer. The PIC16C712 specifically uses a Harvard-architecture 8-bit RISC core, executing most instructions in a single 200 ns cycle, which simplifies deterministic real-time control code.
Key features include 4 channels of 8-bit A/D with input multiplexing, two 8-bit timers plus one 16-bit timer, a CCP module for PWM and measurement tasks, an internal oscillator option, and a wide 4.0 V to 5.5 V supply range with industrial-grade -40C to +85C operation. The 13 I/O pins are 5 V tolerant and source/sink up to 25 mA each, enough to drive LEDs or small relays directly.
The architecture uses a 14-bit instruction word and a separate 8-bit data path, giving the C712 code-space efficiency advantages over 8-bit cores with 12-bit instructions. The integrated ADC with 8-bit resolution and the CCP PWM channel allow direct sensor readout and actuator drive without external glue logic, while the OTP program memory keeps unit cost low for high-volume production.
Typical applications include automotive body and appliance controllers, industrial sensor interfaces, white-goods and HVAC control boards, simple closed-loop fan or pump controllers, and consumer products requiring a low-cost programmable logic replacement. The 18-SOIC wide-body package is hand-solder friendly and well suited to through-hole-adapter prototypes.
When designing with this part, note that OTP memory is one-time programmable - firmware must be fully validated in flash-based development parts (PIC16F712) before committing to the OTP die. Always reserve the MCLR pin configuration and ensure decoupling capacitors are placed within 5 mm of VDD/VSS for ADC noise immunity.
This page synthesizes distributor pricing, package-pinned drop-in alternatives, and application design notes - information not aggregated on any single manufacturer or distributor page.
Alternatives de remplacement direct pour PIC16C712-04I/SO — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16C712-04I/SO (même facteur de forme et même empreinte) — différant par Package, Timers, Core Architecture, RoHS Status, Program Memory Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16C712-04E/SO
✅ Remplacement direct✓ En stock
$3.47 / unité
Voir la fiche technique →PIC16C712-04/SO
✅ Remplacement direct✓ En stock
$3.18 / unité
Voir la fiche technique →PIC16C711-04I/SO
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16C710-04I/SO
✅ Remplacement direct✓ En stock
$2.6 / unité
Voir la fiche technique →PIC16C712-04I/SO Valeurs maximales et caractéristiques électriques
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Program Memory Size | 1.75 KB (1K x 14) |
| Data RAM | 128 bytes |
| Data EEPROM | Not present |
| Fréquence d'horloge maximale | 4 MHz |
| Supply Voltage (VDD) | 4.0 V to 5.5 V |
| I/O Pins | 13 |
| ADC | 4 channels x 8-bit |
| Timers | 2 x 8-bit + 1 x 16-bit (TMR0/TMR1/TMR2) |
| CCP Modules | 1 (Capture / Compare / PWM) |
| Température de fonctionnement | -40C to +85C (Industrial, 'I' suffix) |
| Boîtier | 18-SOIC (0.295 inch / 7.50 mm width, tube) |
| Type de montage | Surface Mount |
| Nombre de broches | 18 |
| Statut RoHS | Compliant |
| Instruction Set | 35 single-word instructions |
Configuration des broches de PIC16C712-04I/SO
| Broche 1 | RA2/AN2 — Bidirectional I/O pin / analog input channel 2 |
| Broche 2 | RA3/AN3/VREF — Bidirectional I/O / analog input 3 / ADC voltage reference |
| Broche 3 | RA4/T0CKI — Bidirectional I/O / Timer0 clock input |
| Broche 4 | MCLR — Master Clear (reset) input, active low |
| Broche 5 | VSS — Ground reference |
| Broche 6 | RB0/INT — Bidirectional I/O / external interrupt input |
| Broche 7 | RB1 — Bidirectional I/O |
| Broche 8 | RB2 — Bidirectional I/O |
| Broche 9 | RB3 — Bidirectional I/O |
| Broche 10 | RB4 — Bidirectional I/O |
| Broche 11 | RB5 — Bidirectional I/O |
| Broche 12 | RB6 — Bidirectional I/O |
| Broche 13 | RB7 — Bidirectional I/O |
| Broche 14 | VDD — Positive supply voltage (4.0 V to 5.5 V) |
| Broche 15 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Broche 16 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Broche 17 | RA0/AN0 — Bidirectional I/O / analog input channel 0 |
| Broche 18 | RA1/AN1 — Bidirectional I/O / analog input channel 1 |
Applications typiques
PIC16C712-04I/SO convient pour 6 applications: Industrial Sensor Interface Board, Appliance Control Board (White Goods), Automotive Body Controller, Consumer Remote Control / IR Transmitter, Small DC Motor / Fan Speed Controller, Battery Charger / Power Management Slave.
Industrial Sensor Interface Board
The PIC16C712-04I/SO fits industrial sensor-interface boards because it integrates a 4-channel 8-bit ADC for direct analog sensor readout (temperature, pressure, humidity transducers), 13 digital I/O for digital sensor glue logic, and industrial -40C to +85C operation. The CCP module generates PWM to drive 4-20 mA loop excitation or LED indicators without external timer ICs. The 200 ns instruction cycle supports deterministic 1 ms control loops for closed-loop regulators. Place a 10 nF decoupling cap within 5 mm of VDD/VSS and route the analog inputs (RA0-RA3) away from PWM/digital traces to keep ADC noise below 1 LSB. Best for: HVAC sensor boards, factory automation slave nodes.
Recommandé
Appliance Control Board (White Goods)
The PIC16C712-04I/SO is well suited to appliance controllers such as washing machines, dishwashers, and microwave ovens. Its 13 I/O pins each source/sink 25 mA - enough to drive TRIAC optocouplers, relays, and seven-segment LED displays directly without buffer transistors. The CCP module generates zero-crossing-triggered PWM for heater element control, while the 16-bit Timer1 captures tachometer pulses from motor sensors for accurate speed feedback. OTP memory ensures the firmware cannot be reverse-retroengineered, which protects OEM IP. Use industrial -40C to +85C temperature range to handle under-cabinet heat. Verify firmware on PIC16F712 before committing to OTP for production.
Recommandé
Automotive Body Controller
The PIC16C712-04I/SO is targeted at low-end automotive body-electronics modules such as lighting controllers, seat adjusters, mirror controllers, and auxiliary HVAC. It integrates a 4-channel 8-bit ADC for reading switch wiper positions, ambient light sensors, and thermistors, plus 13 I/O pins for relay and LED drive. Operating from a regulated 5 V supply with 4.0-5.5 V tolerance matches automotive post-regulator rails. However, note this part is NOT AEC-Q100 qualified - for AEC-Q100 designs, migrate to PIC16F712-E/SO or PIC18F variants. The 4 MHz max clock keeps EMI emissions low for in-cabin modules where RF susceptibility matters.
Recommandé
Consumer Remote Control / IR Transmitter
The PIC16C712-04I/SO suits IR/RF remote-control transmitters, wireless sensor nodes, and low-cost consumer handhelds. The CCP module generates 38 kHz carrier PWM for IR transmission, while Timer0 handles button-debounce and wake-up timing from sleep mode. With only 1.75 KB OTP program memory, the firmware budget is sufficient for simple NEC/Sony IR protocols, RC encode, or proprietary OOK schemes. Sleep current under 1 uA extends battery life in coin-cell remotes. The 13 I/O pins can matrix-scan a 4x4 keypad (12 pins used) with one pin reserved for IR LED drive. Industrial temp grade handles outdoor temperature extremes for garage-door or gate remotes.
Recommandé
Small DC Motor / Fan Speed Controller
The PIC16C712-04I/SO can implement closed-loop DC motor or fan speed control using its 16-bit Timer1 to measure tachometer feedback pulses and its CCP module to drive a MOSFET gate with variable-duty PWM. The 4-channel 8-bit ADC reads potentiometer speed commands, supply voltage, and current shunt (via op-amp) for overcurrent protection. With 1 microsecond instruction cycle at 4 MHz, the control loop runs at >10 kHz which exceeds the bandwidth of small brushed DC motors. Industrial -40C to +85C operation tolerates fan-heatsink environments. For 3-phase BLDC, choose PIC18F or dsPIC33F families; for brushed DC under 5 A this part is ideal.
Recommandé
Battery Charger / Power Management Slave
The PIC16C712-04I/SO can serve as a low-cost charging controller for NiMH, Li-ion, or lead-acid battery packs in the 1-10 cell range. Its 4-channel 8-bit ADC monitors battery voltage (via divider), charge current (via shunt), cell temperature (via NTC thermistor), and input supply presence. The CCP PWM module drives a buck-converter power stage or linear pass element with closed-loop regulation. Industrial temp range covers outdoor and under-hood environments. OTP memory prevents end-user firmware tampering - important for safety-critical chargers. Migrate to PIC16F712 for AEC-Q100 or where firmware updates are required.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16C712-04I/SO — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16C712-04E/SO | PIC16C712-04/SO | PIC16C711-04I/SO | PIC16C710-04I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC (wide-body 7.50 mm) | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same |
| Program Memory | 1.75 KB (1K x 14) OTP | 1.75 KB (1K x 14) OTP | 1.75 KB (1K x 14) OTP | 1.75 KB (1K x 14) OTP | 0.875 KB (512 x 14) OTP -50% |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| ADC | 4 channels x 8-bit | 4 channels x 8-bit | 4 channels x 8-bit | None (0 channels) | None (0 channels) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +125C (Extended) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| CCP Module | 1 (PWM/Capture/Compare) | 1 | 1 | 1 | 1 |
| Supply Voltage | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Principaux différenciateurs
- Industrial temperature grade for harsh environments (vs PIC16C712-04/SO)
- Pin-compatible with PIC16C711 family for design flexibility (vs PIC16C711-04I/SO)
- Flash migration path available (vs PIC16F712-I/SO)
Notes de conception
PIC16C712 uses OTP (one-time-programmable) EPROM, not flash - a programming error is permanent. Always develop and validate firmware on the flash-based PIC16F712 (same pinout and peripherals) before committing code to the OTP C712. Use a UV-erasable windowed PIC16C712/JW prototype for engineering samples. Estimated bit-cost trade-off: ~15% unit-cost savings on C712 vs F712 at >10k volume justifies the development cycle.
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin (14) and VSS pin (5), with the trace to VDD shorter than 10 mm to suppress digital switching noise. For ADC accuracy below 1 LSB, add a separate 10 uF bulk capacitor on the analog AVdd rail (shared with VDD on this part) and a ferrite bead between digital and analog ground returns. The internal ADC reference defaults to VDD; for absolute accuracy, apply an external MCP1541 4.096 V reference on RA3/AN3/VREF.
Route the four ADC analog inputs (RA0-RA3) as short traces kept >5 mm away from PWM outputs, oscillator traces, and digital I/O with high dv/dt. Use a ground plane on layer 2 and route analog signals over an unbroken ground pour. For the 18-SOIC wide-body package, use 0.5 mm wide SOIC pads with 1.27 mm pitch - the wide-body (7.50 mm) variant is preferred over the narrow-body (3.90 mm) for hand-solder reworkability and better thermal performance.
The MCLR pin (4) requires a 10 kohm pull-up to VDD for reliable operation; without it the device may intermittently reset due to noise. For noisy environments, add a 100 nF cap from MCLR to VSS to filter fast transients. The OSC1/OSC2 crystal traces must be <10 mm long with a grounded guard ring; stray capacitance above 10 pF on these pins shifts the oscillator frequency and can cause start-up failure at -40 C.
Informations de conformité
RoHS and lead-free compliant per Microchip product page. NOT AEC-Q100 qualified - this is a legacy industrial/consumer part without automotive certification. For AEC-Q100 applications, choose PIC16F712-E/SO or PIC18F automotive-qualified alternatives.
