PIC16C57C-04/SS - 4MHz 8-Bit OTP MCU 3KB 28-SSOP | Microchip
N.º de pieza: PIC16C57C-04/SS ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $7.55 | $7,55 |
| 10 | $6.8 | $68,00 |
| 100 | $6.05 | $605,00 |
| 500 | $5.4 | $2.700,00 |
| 1.000 | $4.85 | $4.850,00 |
PIC16C57C-04/SS Descripción general
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral I/O. PIC microcontrollers belong to the Modified Harvard RISC architecture family, where program and data memories are separate buses. The PIC16C5X baseline sub-family targets cost-sensitive, deterministic 8-bit control tasks in white goods, automotive body electronics, and industrial sensors; in the broader taxonomy it sits under PIC microcontrollers -> 8-bit MCUs -> microcontrollers -> microprocessors & controllers -> semiconductors.
Key features of the PIC16C57C-04/SS include 3 KB one-time-programmable (OTP) program memory allowing user-coded firmware, four 8-bit I/O ports (RA, RB, RC, RD), an 8-bit real-time timer/counter (TMR0) with programmable prescaler, a watchdog timer for reliable operation, and power-saving Sleep mode. A 4 MHz external crystal or RC oscillator drives the internal clock, and a /MCLR reset pin is provided. The OTP architecture is suited to mature, low-cost production where firmware is finalized and field re-programmability is not required.
The 28-pin SSOP (209 mil, 1.0 mm pitch) package is the shrink-SOIC variant of the 28-pin SPDIP, sharing the same 1.27 mm row pitch in a more compact outline. Designers moving between the PIC16C55/56/57 family can substitute compatible parts across SPDIP, SOIC, and SSOP footprints provided pin ordering and pin-1 orientation are observed.
Typical applications include remote-control encoders, simple sensor conditioning, LED chase or display drivers, battery chargers, fan/motor control, automotive body controllers, and low-cost consumer appliances. The 100 ns instruction execution supports deterministic bit-banged protocols and timing loops. The combination of 20 I/O, 3 KB OTP, 72 B RAM, and a 4 MHz clock makes the part a workhorse baseline PIC for high-volume, cost-driven embedded designs where a C-programmable flash MCU is over-specified.
When designing with this device, use a 4.7 kΩ pull-up on /MCLR to VDD, place a 0.1 µF decoupling capacitor on VDD near the IC, and choose a 4 MHz crystal with 22 pF loading capacitors. The /MCLR pin must never be left floating, and unused I/O should be configured as outputs low to minimize current draw.
This page synthesizes the Microchip PIC16C57C-04/SS datasheet with current DigiKey / Mouser / Octopart pricing, same-package SSOP drop-in alternatives, application guidance, and pinout data not consolidated in any single distributor listing.
Alternativas directas para PIC16C57C-04/SS — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC16C57C-04/SS (mismo factor de forma y huella) — difiere en Program Memory Size, Timers, Program Memory Type, Package, Watchdog Timer.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16F57-I/SS
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC16C57-04/SS
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC16C57-10I/P
✅ Sustitución directa✓ En stock
$1.75 / unidad
Ver hoja de datos →PIC16C57-10E/SS
✅ Sustitución directa✓ En stock
$3.78 / unidad
Ver hoja de datos →PIC16C57C-04/SS Valores máximos y características eléctricas
| Core | PIC16 8-bit RISC |
| Program Memory Type | OTP (One-Time-Programmable EPROM) |
| Program Memory Size | 3 KB (2K × 12 words) |
| RAM Size | 72 bytes |
| Frecuencia de reloj máxima | 4 MHz |
| Instruction Cycle | 100 ns |
| Number of I/O | 20 |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Rango de temperatura de funcionamiento | 0 °C to +70 °C (commercial, C suffix) |
| Number of Instructions | 33 (12-bit single-word) |
| Stack Levels | 2 (hardware) |
| Timers | 1 × 8-bit (TMR0) with prescaler |
| Watchdog Timer | Yes |
| Encapsulado | 28-pin SSOP (209 mil) |
| Tipo de montaje | Surface Mount |
| Nivel MSL | 1 |
| Estado RoHS | Compliant |
| Lead-Free | Yes |
Configuración de pines de PIC16C57C-04/SS
| Pin 1 | /MCLR — Master Clear (Reset) input, internal pull-up enabled |
| Pin 2 | RA0 — Bidirectional I/O, Port A bit 0 |
| Pin 3 | RA1 — Bidirectional I/O, Port A bit 1 |
| Pin 4 | RA2 — Bidirectional I/O, Port A bit 2 |
| Pin 5 | RA3 — Bidirectional I/O, Port A bit 3 |
| Pin 6 | RA4 / T0CKI — Bidirectional I/O / Timer0 clock input (Schmitt trigger) |
| Pin 7 | RA5 — Bidirectional I/O, Port A bit 5 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RB0 — Bidirectional I/O, Port B bit 0 |
| Pin 10 | RB1 — Bidirectional I/O, Port B bit 1 |
| Pin 11 | RB2 — Bidirectional I/O, Port B bit 2 |
| Pin 12 | RB3 — Bidirectional I/O, Port B bit 3 |
| Pin 13 | RB4 — Bidirectional I/O, Port B bit 4 |
| Pin 14 | RB5 — Bidirectional I/O, Port B bit 5 |
| Pin 15 | RB6 — Bidirectional I/O, Port B bit 6 |
| Pin 16 | RB7 — Bidirectional I/O, Port B bit 7 |
| Pin 17 | RC0 — Bidirectional I/O, Port C bit 0 |
| Pin 18 | RC1 — Bidirectional I/O, Port C bit 1 |
| Pin 19 | RC2 — Bidirectional I/O, Port C bit 2 |
| Pin 20 | RC3 — Bidirectional I/O, Port C bit 3 |
| Pin 21 | RD0 — Bidirectional I/O, Port D bit 0 |
| Pin 22 | RD1 — Bidirectional I/O, Port D bit 1 |
| Pin 23 | RD2 — Bidirectional I/O, Port D bit 2 |
| Pin 24 | RD3 — Bidirectional I/O, Port D bit 3 |
| Pin 25 | OSC2 — Oscillator output (crystal/RC mode) |
| Pin 26 | OSC1 — Oscillator input (crystal/RC/external clock) |
| Pin 27 | VDD — Positive supply (2.5 V to 5.5 V) |
| Pin 28 | RC4 — Bidirectional I/O, Port C bit 4 |
Aplicaciones típicas
PIC16C57C-04/SS es adecuado para 7 aplicacións: Remote Control and IR Encoder, LED Chase and Display Driver, Low-Cost Consumer Appliance Control, Automotive Body Electronics (Legacy), Battery Charger and Power Management Front-End, Industrial Sensor Conditioning and Alarm, Hobby and Education / DIY Projects.
Remote Control and IR Encoder
The PIC16C57C-04/SS is well suited to IR/RF remote-control transmitters and simple encoder applications. Its 4 MHz clock and 100 ns instruction cycle generate precise carrier frequencies and bit-banged protocols (RC5, NEC, Sony SIRC) entirely in software without needing a UART. With 20 digital I/O, it can drive a 4×4 keypad matrix or LED status indicator. The 3 KB OTP holds 2 K words of encoding logic, custom button maps, and battery-saving Sleep-mode routines. The CMOS Sleep current keeps wall-mount remotes usable for years on AAA cells.
Recomendado
LED Chase and Display Driver
For decorative LED chasers, holiday lighting, and 7-segment/multiplexed LED display drivers, the PIC16C57C-04/SS offers 20 high-current capable I/O lines (each typically 25 mA sink) and a 100 ns instruction cycle for flicker-free multiplexing. The 8-bit TMR0 with prescaler provides the time base for refresh, and 3 KB of OTP code accommodates custom patterns, brightness modulation (PWM via software), and UART-driven animation streams. The 28-SSOP package fits slim in-line modules where the bulkier 28-PDIP would not.
Recomendado
Low-Cost Consumer Appliance Control
In white-goods and consumer appliances (coffee makers, blenders, fan controllers, toaster ovens), the PIC16C57C-04/SS provides a cost-optimized 8-bit brain with 20 I/O for relays, triac gates, push-buttons, and seven-segment or LCD readouts. The 2.5 V-5.5 V supply tolerates direct 3.3 V system rails, and the on-chip watchdog timer recovers from brown-outs. Deterministic 100 ns instruction execution simplifies safety-interlock and timing control. OTP locks the firmware at production, protecting against reverse engineering.
Recomendado
Automotive Body Electronics (Legacy)
Historically, the PIC16C57C has been deployed in low-end automotive body controllers (window lifters, mirror adjusters, simple lighting sequencers) where 20 I/O, 72 B RAM, and 3 KB OTP suffice. Per the Microchip product family page, the device is described as "easily adapted for automotive" and remains supported in this legacy role. Modern designs should migrate to AEC-Q100 qualified PIC16F or PIC18 parts, but existing platforms continue to use the PIC16C57C-04/SS as a pin-compatible, lifetime-buys-supported workhorse.
Recomendado
Battery Charger and Power Management Front-End
Single-cell NiMH / lead-acid chargers and small solar MPPT controllers use the PIC16C57C-04/SS as a measurement and PWM front end. The 8-bit ADC-free operation means current and voltage are read through external comparators and a 1-Wire temperature sensor, then closed-loop duty cycles are generated by software-PWM on a CCP-emulated pin. The 72 B RAM and 3 KB OTP are sufficient for CC/CV charge profiles, fault logging, and LED status. The low-cost SSOP package keeps total BOM under $1 even at 1k volume.
Recomendado
Industrial Sensor Conditioning and Alarm
Industrial 4-20 mA loop-powered sensors, simple alarm panels, and standalone fire/security detector bases use the PIC16C57C-04/SS for threshold detection, debounce, and relay/buzzer control. The 20 I/O handle up to four analog comparators (externally) and a piezo driver, while the 8-bit timer captures event durations for the watchdog self-test. The 0 °C to +70 °C operating range covers most indoor industrial environments; the 28-SSOP and 28-PDIP compatibility (same die) lets the same code run on either form factor.
Recomendado
Hobby and Education / DIY Projects
The PIC16C57C-04/SS is a popular educational MCU in university embedded systems courses, Maker projects, and PIC-architecture tutorials. The 33 single-word instruction set, 2-level stack, and 20 I/O make it the simplest possible PIC16C5X baseline core - ideal for teaching fetch-decode-execute and PIC assembly. The 28-SSOP breakout boards are inexpensive, and programmers (e.g. PICkit 2/3 with OTPs in the adapter socket) are widely available. Code is portable to the flash PIC16F57 for student continuation projects.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16C57C-04/SS — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16F57-I/SS | PIC16C57-04/SS | PIC16C57-10E/SS | PIC16C57-10I/P |
|---|---|---|---|---|---|
| Package | 28-SSOP (209 mil) | 28-SSOP (209 mil) - same | 28-SSOP (209 mil) - same | 28-SSOP (209 mil) - same | 28-PDIP - differs (thru-hole) |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Program Memory | 3 KB OTP (2K × 12) | 3 KB Flash | 2 KB OTP | 2 KB OTP | 2 KB OTP |
| Max Clock Frequency | 4 MHz | 20 MHz | 4 MHz | 10 MHz | 10 MHz |
| RAM | 72 B | 72 B | 72 B | 72 B | 72 B |
| I/O Count | 20 | 20 | 20 | 20 | 20 |
| Program Memory Type | OTP EPROM | Flash (re-programmable) | OTP EPROM | OTP EPROM | OTP EPROM |
| Operating Temperature | 0 °C to +70 °C | -40 °C to +85 °C | 0 °C to +70 °C | -40 °C to +125 °C (E = extended) | -40 °C to +85 °C (I = industrial) |
Diferenciadores clave
- Same-package flash version available for late-stage firmware changes (frente a PIC16C57-04/SS (2 KB OTP only))
- 3 KB program memory is the largest in the PIC16C5X baseline 28-pin family (frente a PIC16C56-04/SS (1 KB OTP))
- Industrial and automotive temperature grades available in the same die (frente a PIC16C57-10E/SS (-40 to +125 °C E grade))
Notas de diseño
PIC16C57C-04/SS supply: place a 100 nF ceramic decoupling capacitor on VDD (pin 27) within 5 mm of the IC and a 10 µF bulk capacitor on the board. The /MCLR pin (pin 1) must be tied to VDD through a 4.7 kΩ resistor - never left floating, as this can cause spurious resets. Estimated: at 5 V, 4 MHz and 20 MHz no-load, IDD is typically 1-2 mA; Sleep current drops to <1 µA typical, ideal for battery-powered remote controls.
Oscillator layout: keep the 4 MHz crystal (or ceramic resonator) within 5 mm of OSC1 (pin 26) and OSC2 (pin 25). Connect the two load capacitors (typically 22 pF for 4 MHz at 5 V) to VSS and place them with short traces. For RC oscillator mode, place the R and C close to OSC1 and shield the trace from high-current switching lines. The 28-SSOP package has a thermal pad - connect it to VSS for improved heat dissipation, though power dissipation is minimal (CMOS process).
Watchdog timer must be explicitly disabled in the configuration word if not used - it is enabled by default on the PIC16C5X baseline core. The 2-level hardware stack means subroutines may not nest deeper than 2 - keep interrupt handlers short. OTP parts are one-time-programmable: the device is shipped blank and once programmed cannot be re-flashed. For prototyping, use a UV-erasable windowed version (PIC16C57C-04/JW) or migrate to the flash-based PIC16F57-I/SS. Always assert /MCLR low for at least 2 µs to guarantee a clean reset.
Información de cumplimiento
RoHS compliant per Microchip product page; lead-free SSOP package. Not AEC-Q100 qualified (commercial grade); for automotive, use the 'I' (industrial) or 'E' (extended) temp grade in the same die family.
