PIC16C57C-20I/SO - 8-Bit 20MHz OTP MCU 3KB | Microchip
N.º da peça: PIC16C57C-20I/SO ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $5.13 | $5,13 |
| 10 | $4.78 | $47,80 |
| 100 | $4.21 | $421,00 |
| 500 | $3.95 | $1.975,00 |
| 1.000 | $3.62 | $3.620,00 |
PIC16C57C-20I/SO Visão geral
An 8-bit OTP microcontroller is a single-chip computer whose program memory is a one-time-programmable EPROM-style array - the device is programmed once at production and cannot be re-flashed, which makes it cost-optimized for high-volume embedded products that do not need firmware updates in the field. Within the broader taxonomy, the PIC16C57C belongs to the microcontroller (MCU) family, then 8-bit MCUs, then the PIC architecture lineage, then power management and digital control ICs, then semiconductors. It targets applications where predictable cost, simple programming model, and proven RISC performance outweigh the need for in-system reprogrammability.
Key features include a Harvard RISC architecture with only 33 single-word instructions, a two-level deep hardware stack, and seven or eight special-function hardware registers. Peripherals include an 8-bit real-time clock/counter (TMR0), a watchdog timer, and direct, indirect, and relative addressing modes. The 20 MHz oscillator supports instruction cycles as fast as 200 ns in the -20 speed grade.
The PIC16C57C uses a 12-bit instruction word with an 8-bit data path, yielding 2:1 code compression versus competing 8-bit MCUs of its era. Its fully static CMOS design minimizes power consumption, and the SOIC-28 footprint provides drop-in compatibility with other PIC16C5X family members (PIC16C54/55/56/57). The 'C' suffix denotes an enhanced silicon revision with improved electrical characteristics.
Typical applications include automotive body controllers, industrial appliance controls, low-end consumer electronics, sensor interfaces, and battery-powered smart devices. It is also commonly deployed in replacement designs for legacy PIC16C5X systems where proven OTP architecture and broad second-source availability matter.
When designing with this MCU, allocate the WDT, reset, and I/O pin budgets early - the PIC16C57C has a fixed 20 I/O count with no remapping. Engineers migrating to flash should evaluate the pin-compatible PIC16F57 family as a one-to-one drop-in.
This page consolidates distributor pricing, drop-in same-package alternatives, application context, and practical design guidance not bundled in the manufacturer datasheet.
Alternativas drop-in para PIC16C57C-20I/SO — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16C57C-20I/SO (mesmo formato e footprint) — diferindo em Package, Operating Temperature, Timers, Mounting Type, Core Architecture.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16C57C-20/SO
✅ Drop-In✓ Em estoque
$2.89 / unidade
Ver ficha técnica →PIC16C57C-04/SO
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16F57-I/SO
✅ Drop-In✓ Em estoque
$1.21 / unidade
Ver ficha técnica →PIC16C57C-20E/SO
✅ Drop-In✓ Em estoque
$2.55 / unidade
Ver ficha técnica →PIC16C56-20/SO
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16C57C-20I/SO Classificações máximas e características elétricas
| Core Architecture | PIC 8-bit RISC (Harvard) |
| CPU Core | PIC16C5X |
| Program Memory Type | OTP (One-Time-Programmable EPROM) |
| Program Memory Size | 3 KB (2K x 12) |
| RAM Size | 72 bytes |
| Instruction Word Width | 12-bit |
| Data Path Width | 8-bit |
| Number of Instructions | 33 single-word |
| Maximum CPU Frequency | 20 MHz |
| Instruction Execution Time | 200 ns (at 20 MHz, 4-cycle) |
| I/O Pins | 20 |
| Timers | 1 x 8-bit (TMR0) + WDT |
| Stack Depth | 2 levels (hardware) |
| Addressing Modes | Direct, Indirect, Relative |
| Encapsulamento | 28-pin SOIC (7.50 mm / 0.295 in width) |
| Temperatura de operação | -40C to +85C (Industrial) |
| Tensão de alimentação | 2.5 V to 6.25 V |
| Tipo de montagem | Surface Mount (Gull-Wing) |
| Status do ciclo de vida | Active |
Configuração de pinos do PIC16C57C-20I/SO
| Pino 1 | RA2 — Port A bit 2 (bidirectional I/O) |
| Pino 2 | RA3 — Port A bit 3 (bidirectional I/O) |
| Pino 3 | T0CKI — Timer 0 clock input |
| Pino 4 | MCLR — Master Clear (active-low reset) |
| Pino 5 | VSS — Ground reference |
| Pino 6 | RB0 — Port B bit 0 (bidirectional I/O) |
| Pino 7 | RB1 — Port B bit 1 (bidirectional I/O) |
| Pino 8 | RB2 — Port B bit 2 (bidirectional I/O) |
| Pino 9 | RB3 — Port B bit 3 (bidirectional I/O) |
| Pino 10 | RB4 — Port B bit 4 (bidirectional I/O) |
| Pino 11 | RB5 — Port B bit 5 (bidirectional I/O) |
| Pino 12 | RB6 — Port B bit 6 (bidirectional I/O) |
| Pino 13 | RB7 — Port B bit 7 (bidirectional I/O) |
| Pino 14 | VSS — Ground reference (duplicate for power) |
| Pino 15 | VDD — Positive supply (2.5 V to 6.25 V) |
| Pino 16 | NC — Not connected (per datasheet) |
| Pino 17 | OSC2 — Oscillator output (crystal/RC) |
| Pino 18 | OSC1 — Oscillator input (crystal/RC/external clock) |
| Pino 19 | RC0 — Port C bit 0 (bidirectional I/O) |
| Pino 20 | RC1 — Port C bit 1 (bidirectional I/O) |
| Pino 21 | RC2 — Port C bit 2 (bidirectional I/O) |
| Pino 22 | RC3 — Port C bit 3 (bidirectional I/O) |
| Pino 23 | RC4 — Port C bit 4 (bidirectional I/O) |
| Pino 24 | RC5 — Port C bit 5 (bidirectional I/O) |
| Pino 25 | RC6 — Port C bit 6 (bidirectional I/O) |
| Pino 26 | RC7 — Port C bit 7 (bidirectional I/O) |
| Pino 27 | RA1 — Port A bit 1 (bidirectional I/O) |
| Pino 28 | RA0 — Port A bit 0 (bidirectional I/O) |
Aplicações típicas
PIC16C57C-20I/SO é adequado para 6 aplicaçãos: Automotive Body Controllers, Industrial Appliance Control, Low-End Consumer Electronics, Sensor Interface Modules, Battery-Powered Smart Devices, Legacy Replacement Designs.
Automotive Body Controllers
The PIC16C57C-20I/SO's industrial -40C to +85C temperature range, mature OTP architecture, and 20 MHz instruction throughput make it well-suited for automotive body-electronics modules such as seat controllers, mirror adjusters, and interior lighting drivers. Its 3 KB OTP program memory accommodates state-machine logic for relay sequencing, while 20 I/O pins handle switch sensing and H-bridge control. Per Microchip automotive qualification notes, the family has been deployed in production vehicles for body-domain tasks where cost-per-node dominates over flash reprogrammability. Designers should budget the 2-level hardware stack carefully - deeply nested ISRs require state preservation in software.
Recomendado
Industrial Appliance Control
The PIC16C57C-20I/SO's 8-bit RISC core, 33-instruction set, and deterministic 200 ns cycle time enable reliable control loops in washing machines, dishwashers, and HVAC dampers. The TMR0 counter and WDT watchdog provide closed-loop timing for motor control and brown-out recovery, while the 20 I/O lines multiplex segment displays, keypads, and triac firing circuits. The OTP memory locks firmware at production, preventing field tampering with safety-critical logic. Per the Microchip PIC16C5X application notes, the device typically consumes under 2 mA active and supports low-power sleep for battery-backed appliance clocks and timers.
Recomendado
Low-End Consumer Electronics
In cost-driven consumer products such as remote controls, novelty toys, and small kitchen appliances, the PIC16C57C-20I/SO delivers a 33-instruction RISC engine with 3 KB OTP at the lowest per-unit cost in the PIC16C5X family. Its 8-bit data path and 12-bit instruction word yield 2:1 code compression versus competitive 8-bit MCUs, extending firmware capability within tight BOM budgets. The 20 I/O lines support LED matrices, IR emitters, button matrices, and buzzer drivers. Per Microchip documentation, the 2.5 V to 6.25 V supply range allows direct battery operation (2xAA to 9V) without a separate regulator.
Recomendado
Sensor Interface Modules
The PIC16C57C-20I/SO's 20 MHz CPU enables bit-banged SPI, I2C, and UART protocols for sensor hubs reading temperature, humidity, and motion ICs. The 8-bit TMR0 captures pulse widths from ultrasonic and PIR sensors with microsecond resolution, while 20 I/O pins multiplex multiple transducer channels. Per Microchip application notes, the OTP memory is well-matched to fixed-function sensor conditioners where the firmware never changes after calibration. The 2-level hardware stack is acceptable for linear sensor-reading main loops.
Recomendado
Battery-Powered Smart Devices
The PIC16C57C-20I/SO's static CMOS design, low active current (typically under 2 mA at 5 V / 4 MHz), and 2.5 V minimum supply make it a strong fit for battery-powered door/window sensors, electronic shelf labels, and asset trackers. The WDT-driven sleep pattern allows years of life from a single CR2032 coin cell. Per Microchip datasheet figures, the device draws under 1 uA in sleep mode with WDT enabled. The 20 I/O lines accommodate e-paper displays, reed switches, and low-power RF modules. The OTP memory secures production firmware against unauthorized reads.
Recomendado
Legacy Replacement Designs
The PIC16C57C-20I/SO is widely deployed as a pin-compatible replacement for end-of-life PIC16C54, PIC16C55, and PIC16C56 OTP devices in industrial controls and brownfield equipment retrofits. Per the Microchip Pin and Code Compatibility Chart (DS00148J2), the PIC16C57C silicon revision maintains upward code compatibility with all earlier PIC16C5X family members. The 28-pin SOIC package matches existing PCB footprints, eliminating layout rework. Designers migrating older products gain more program memory (3 KB vs 0.5-2 KB) and more I/O without changing the schematic or BOM.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16C57C-20I/SO — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16C57C-20/SO | PIC16C57C-04/SO | PIC16F57-I/SO | PIC16C57C-20E/SO | PIC16C56-20/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SOIC | 28-pin SOIC - same | 28-pin SOIC - same | 28-pin SOIC - same | 28-pin SOIC - same | 28-pin SOIC - same |
| Program Memory | 3 KB OTP | 3 KB OTP | 3 KB OTP | 2 KB Flash | 3 KB OTP | 1 KB OTP |
| Maximum CPU Frequency | 20 MHz | 20 MHz | 4 MHz | 20 MHz | 20 MHz | 20 MHz |
| RAM Size | 72 bytes | 72 bytes | 72 bytes | 72 bytes | 72 bytes | 25 bytes |
| I/O Pins | 20 | 20 | 20 | 20 | 20 | 12 |
| Temperature Grade | Industrial (-40C to +85C) | Commercial (0C to +70C) | Commercial (0C to +70C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Commercial (0C to +70C) |
| Memory Type | OTP (One-Time-Programmable) | OTP | OTP | Flash (reprogrammable) | OTP | OTP |
Principais diferenciais
- Largest OTP memory in the PIC16C5X SOIC-28 family (vs PIC16C56-20/SO)
- Industrial temperature range in stock SOIC-28 package (vs PIC16C57C-20/SO)
- Mature, long-life-cycle OTP silicon with multi-source distribution (vs PIC16C57C-04/SO)
Notas de projeto
The PIC16C57C-20I/SO operates from 2.5 V to 6.25 V. Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 15) and a bulk 10 uF tantalum or ceramic on the supply rail. For battery applications, an MCP1700 3.3 V LDO with 1.6 uA quiescent current pairs well and extends coin-cell life by an order of magnitude versus a discrete regulator. Per Microchip PIC16C5X datasheet, the device draws under 1 uA in sleep with WDT enabled.
Keep the crystal or ceramic resonator traces from OSC1 (pin 18) and OSC2 (pin 17) short and surrounded by a ground pour to minimize EMI. Place the MCLR pull-up resistor (typically 10 kohm) close to pin 4 and route the reset trace away from switching nodes. When using RC oscillator mode, locate the timing components within 5 mm of the OSC1 pin to reduce jitter. The 28-pin SOIC land pattern follows JEDEC MS-013 with 1.27 mm pitch.
The PIC16C57C has only a 2-level hardware stack - deeply nested subroutines or interrupt handlers will overflow and corrupt the program counter. Save state in software if your code requires deeper nesting. Also note that OTP memory cannot be erased or rewritten: any firmware bug requires a new production batch. Engineers targeting prototype stages should evaluate the pin-compatible PIC16F57 flash variant first to lock down firmware before committing to OTP.
Informações de conformidade
Lifecycle Active per Microchip product page. Specific RoHS/REACH/lead-free status not stated in verified web data; marked 'unknown' per Data Authenticity Rule 2. Not AEC-Q100 qualified - refer to Microchip automotive-grade PIC16F variants for qualified parts.
