PIC16C57-10I/P - 8-Bit CMOS MCU 2KB EPROM 28-PDIP | Microchip
MPN: PIC16C57-10I/P β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.21 | $221.00 |
| 500 | $1.95 | $975.00 |
| 1,000 | $1.75 | $1,750.00 |
PIC16C57-10I/P Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data memory, and peripheral interfaces on a single die. The PIC16C5X family uses a 12-bit-wide instruction word and an 8-bit data path with a two-level deep hardware stack. It sits within the broader taxonomy of: microcontroller -> embedded processor -> semiconductor device. The "C" suffix denotes CMOS EPROM-based program memory, distinguishing it from the flash-based PIC16F5X successors, and the OTP nature means each device can be programmed exactly once and cannot be erased.
Key features of the PIC16C57 include a RISC instruction set with only 33 single-word/single-cycle instructions, a 2:1 code compression advantage over competing 8-bit MCUs in its class, and seven or eight special function hardware registers. The integrated 8-bit Timer0 (TMR0) with an 8-bit prescaler handles timing and counting tasks, while the device supports direct, indirect, and relative addressing modes for both data and instructions. The PIC16C57's power-on reset, power-saving SLEEP mode, and wide operating voltage range (2.5V-6.0V typical) make it well suited for cost-sensitive embedded control.
Architecturally, the PIC16C57 employs a Harvard-style separate program and data bus arrangement, enabling simultaneous instruction fetch and operand access. The OTP EPROM is programmed via standard Microchip device programmers (such as the MPLAB PM3), and the wide operating voltage tolerance (3.3V and 5V rails) allows deployment in both 5V legacy systems and modern 3.3V designs. Compared to PIC16F5X flash replacements, the PIC16C57-10I/P offers equivalent instruction set compatibility but lacks in-system reprogrammability.
Typical applications include consumer appliances, automotive body electronics, industrial control subsystems, security and access control panels, and low-end remote sensor nodes. The wide temperature range and robust 5V tolerance also suit HVAC controls and uninterruptible power supply (UPS) auxiliary monitoring boards. The through-hole PDIP package simplifies prototyping and field-serviceable designs.
When designing with this part, note that the PIC16C57 uses an OTP EPROM and cannot be reprogrammed; consider the flash-based PIC16F57 for development cycles requiring multiple firmware revisions. Also verify the 20 I/O pin count matches the target PCB footprint - the 28-pin PDIP shares the same outline across the PIC16C55/56/57 family but with different pin assignments.
This page synthesizes distributor pricing, drop-in alternatives within the PIC16C5X family, and practical design notes not consolidated in the original Microchip datasheet.
Drop-in alternatives for PIC16C57-10I/P 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 PIC16C57-10I/P (same form factor and footprint) β differing in Program Memory Size, Program Memory Type, Timers, Mounting Type, Core Architecture.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16C57-10/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16C57-10E/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16C57-20/P
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16F57-I/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16C56-10/P
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16C55-10/P
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$3.65 / Unit
View Datasheet βPIC16C57-10I/P Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC RISC |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 2KB (2K x 12) |
| RAM Size | 72 bytes |
| Maximum Clock Frequency | 10 MHz |
| Instruction Cycle Time | 4.0 us |
| Operating Voltage Range | 3.0 V to 6.0 V |
| I/O Pins | 20 |
| Timers | 1 x 8-bit (TMR0 with 8-bit prescaler) |
| Instruction Set Size | 33 single-word instructions |
| Stack Depth | 2-level hardware stack |
| Package | 28-pin PDIP (0.600 inch / 15.24 mm) |
| Mounting Type | Through-Hole |
| Operating Temperature | -40C to +85C (Industrial) |
| RoHS Status | Non-Compliant (contains lead, OTP windowless) |
PIC16C57-10I/P Pin Configuration
| Pin 1 | RA2 β Bidirectional I/O port A bit 2 |
| Pin 2 | RA3 β Bidirectional I/O port A bit 3 |
| Pin 3 | RTCC β Timer0 (TMR0) real-time clock/counter input |
| Pin 4 | MCLR β Master clear reset input (active low) |
| Pin 5 | VSS β Ground reference |
| Pin 6 | RB0 β Bidirectional I/O port B bit 0 |
| Pin 7 | RB1 β Bidirectional I/O port B bit 1 |
| Pin 8 | RB2 β Bidirectional I/O port B bit 2 |
| Pin 9 | RB3 β Bidirectional I/O port B bit 3 |
| Pin 10 | RB4 β Bidirectional I/O port B bit 4 |
| Pin 11 | RB5 β Bidirectional I/O port B bit 5 |
| Pin 12 | RB6 β Bidirectional I/O port B bit 6 |
| Pin 13 | RB7 β Bidirectional I/O port B bit 7 |
| Pin 14 | VDD β Positive supply voltage |
| Pin 15 | OSC2 β Oscillator output (crystal/ceramic resonator) |
| Pin 16 | OSC1 β Oscillator input (crystal/ceramic resonator or external clock) |
| Pin 17 | RC0 β Bidirectional I/O port C bit 0 |
| Pin 18 | RC1 β Bidirectional I/O port C bit 1 |
| Pin 19 | RC2 β Bidirectional I/O port C bit 2 |
| Pin 20 | RC3 β Bidirectional I/O port C bit 3 |
| Pin 21 | RC4 β Bidirectional I/O port C bit 4 |
| Pin 22 | RC5 β Bidirectional I/O port C bit 5 |
| Pin 23 | RC6 β Bidirectional I/O port C bit 6 |
| Pin 24 | RC7 β Bidirectional I/O port C bit 7 |
| Pin 25 | RA0 β Bidirectional I/O port A bit 0 |
| Pin 26 | RA1 β Bidirectional I/O port A bit 1 |
| Pin 27 | NC β Not connected (per datasheet) |
| Pin 28 | NC β Not connected (per datasheet) |
Typical Applications
PIC16C57-10I/P is suitable for 7 applications: Consumer Appliance Control, Industrial Sensor Interface Modules, Security and Access Control Panels, Automotive Body Electronics, HVAC Auxiliary Control, UPS Battery Monitoring, Remote Sensor Terminal Nodes.
Consumer Appliance Control
The PIC16C57-10I/P's 2KB OTP EPROM, 20 I/O pins, and 5V tolerance suit cost-sensitive consumer appliance controllers including washing machines, microwave ovens, and rice cookers. The OTP EPROM prevents firmware reverse-engineering, protecting manufacturer IP, while the -40C to +85C industrial range handles under-cabinet and laundry-room thermal stress. With 4.0 us instruction cycle and 8-bit Timer0, the MCU can scan keypads, drive 7-segment LED displays, and PWM-control a triac-driven motor load in real time.
Recommended
Industrial Sensor Interface Modules
The PIC16C57-10I/P works well as a low-cost front-end processor for industrial 4-20 mA sensor conditioning modules. Its 20 I/O pins can drive multiple sensor channels, generate excitation voltages, and implement linearization algorithms. The wide 3.0V-6.0V supply tolerance accepts unregulated 5V or 24V-derived rails, while the industrial temperature range handles factory floor conditions. The RISC 33-instruction set keeps response latency predictable, which is critical for closed-loop process control.
Recommended
Security and Access Control Panels
The PIC16C57-10I/P's OTP EPROM provides inherent code protection for security keypad controllers, alarm panels, and access control readers where firmware confidentiality matters. Its 20 I/O pins handle matrix keypads, magnetic-card reader interfaces, relay outputs for door strikes, and LED status indicators. The 10 MHz clock rate and Harvard architecture execute keypad-scanning and authentication routines with deterministic timing. Wide 5V tolerance simplifies integration with legacy security-system power supplies.
Recommended
Automotive Body Electronics
The PIC16C57-10I/P fits low-bandwidth automotive body modules such as window-lift controllers, mirror-adjust drivers, and interior lighting sequencers. The industrial -40C to +85C range covers cabin temperatures, and the 5V tolerance accepts regulated battery-derived rails. Its 20 I/O pins drive multiple relay coils and read Hall-effect position sensors. The OTP EPROM suits high-volume production runs where per-unit cost dominates and firmware is locked at design freeze.
Recommended
HVAC Auxiliary Control
The PIC16C57-10I/P serves HVAC auxiliary boards including zone damper actuators, thermostat remotes, and condensate-pump controllers. Its wide 3.0V-6.0V supply range accepts 24VAC-derived rectified rails, and the industrial temperature rating handles attic and rooftop installations. The 8-bit Timer0 drives stepper-motor pulse sequences or generates PWM for proportional valve control. 2KB program memory supports multi-zone scheduling and EEPROM-backed configuration storage via external I2C.
Recommended
UPS Battery Monitoring
The PIC16C57-10I/P's 5V tolerance and deterministic interrupt latency make it suitable for UPS auxiliary battery-monitoring boards. The 20 I/O pins can read multiple cell voltages via external ADCs, drive status LEDs, and signal main UPS controller via opto-isolated outputs. The OTP EPROM locks down calibration constants for safety-critical battery management, while the industrial temperature range handles battery-cabinet thermal rise. SLEEP mode reduces quiescent current during battery standby.
Recommended
Remote Sensor Terminal Nodes
The PIC16C57-10I/P functions in battery-powered remote sensor terminals measuring temperature, pressure, or flow in industrial or agricultural deployments. Its SLEEP mode and 2.0 mA typical operating current extend battery life, while the 20 I/O pins can wake on external interrupts and read multiple analog channels via external ADC. The wide 3.0V-6.0V supply range accepts two to four AA cells directly, and OTP EPROM locks the firmware against field tampering.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C57-10I/P β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C57-10/P | PIC16C57-10E/P | PIC16C57-20/P | PIC16F57-I/P | PIC16C56-10/P |
|---|---|---|---|---|---|---|
| Package | 28-pin PDIP (0.600") | 28-pin PDIP - same | 28-pin PDIP - same | 28-pin PDIP - same | 28-pin PDIP - same | 28-pin PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 2KB OTP EPROM | 2KB OTP EPROM | 2KB OTP EPROM | 2KB OTP EPROM | 2KB Flash | 1KB OTP EPROM |
| Max Clock Frequency | 10 MHz | 10 MHz | 10 MHz | 20 MHz | 10 MHz | 10 MHz |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | Flash | OTP EPROM |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +125C (Extended) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) |
| RoHS Compliant | No (SnPb finish) | No (SnPb finish) | No (SnPb finish) | No (SnPb finish) | Yes (Flash variant is lead-free) | No (SnPb finish) |
| Typical Price (qty 100, USD) | 2.21 | 2.10 | 2.65 | 2.40 | 2.75 | 1.85 |
Key Differentiators
- Industrial -40C to +85C temperature range for factory-floor deployments (vs PIC16C57-10/P)
- Flash memory enables in-system reprogramming for development and field updates (vs PIC16F57-I/P)
- PIC16C5X 33-instruction RISC set with 2:1 code compression over 8-bit competitors (vs PIC16C55-10/P)
Design Notes
The PIC16C57-10I/P uses OTP (one-time-programmable) EPROM and CANNOT be reprogrammed once written. Any firmware bug discovered after programming requires a fresh blank device, increasing NRE and rework costs. For development cycles, prototyping, or any production where firmware may iterate, choose the flash-based PIC16F57-I/P instead - it shares the same 28-pin PDIP footprint and instruction set but supports in-system reprogramming. Reserve PIC16C57-10I/P for high-volume runs where firmware is locked at design freeze and BOM cost dominates.
The 28-pin PDIP through-hole package requires 0.600 inch row spacing and 28 plated through-holes on a 2.54 mm (0.100 inch) pitch. Place a 100 nF decoupling capacitor as close as possible to the VDD pin (14) and a 10 uF bulk capacitor on the same VDD rail within 1 cm. The MCLR reset pin (4) requires a 10 kohm pull-up to VDD for normal operation; add a 100 nF cap to ground if the application needs debounced reset behavior. The OSC1/OSC2 pins (16/15) connect to a 10 MHz crystal with two 22 pF load capacitors to ground.
The PIC16C57-10I/P typical operating current is 2.0 mA at 5V and 10 MHz, and SLEEP mode reduces this to under 1 uA for battery-backed applications. The wide 3.0V-6.0V supply range accepts unregulated 5V rails directly without an LDO, but for designs above 5.5V use a low-dropout regulator (e.g., MCP1700) to keep the MCU within spec. Estimated: at 5V and 10 MHz, total system current including I/O drive is approximately 2.5-3.0 mA depending on port loading.
The PIC16C57-10I/P shares its 28-pin PDIP outline with the PIC16C55 (512B) and PIC16C56 (1KB) family members, but the pinout differs between the PIC16C5X baseline and PIC16C55A/56A/57A 'A' revisions - always verify the datasheet pinout against the specific MPN before PCB layout. Also note that the 28-pin PDIP is NOT RoHS compliant due to tin-lead plating; migrate to PIC16F57-I/P or a surface-mount variant if RoHS is required for the target market.
Compliance Information
28-pin PDIP package uses tin-lead (SnPb) plating and is NOT RoHS compliant. PIC16C57-10I/P is OTP EPROM-based and not AEC-Q100 qualified; for automotive, consider PIC16C57-10E/P (extended temp) or migrate to flash-based PIC16F57-I/P. REACH compliance per Microchip product declarations.
