PIC16C55A-04/SO Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip PIC16C55A-04/SO is an 8-bit PIC16 OTP microcontroller running at up to 4 MHz with 512 bytes of program memory and 24 general-purpose I/O pins in a 28-pin SOIC package. Available in stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- PIC16C55A-04/SO Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.8517(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PIC16C55A-04/SO?
- 8-bit PIC16 RISC architecture clocked up to 4 MHz, delivering deterministic single-cycle instruction execution for real-time control
- OTP (one-time programmable) Flash architecture enables low-cost, tamper-resistant production deployments without external memory
- 28-pin SOIC-28 package with up to 24 I/O pins provides broad peripheral connectivity in a standard through-hole-compatible footprint
What is PIC16C55A-04/SO used for?
The PIC16C55A-04/SO targets cost-sensitive embedded control applications such as appliance timers, industrial relay controllers, and simple sequential logic replacement circuits where OTP program security and low pin-count I/O expansion are priorities. Its 4 MHz RISC core handles straightforward event-driven tasks like keypad scanning, LED multiplexing, and UART-based serial communication with minimal external components. The SOIC-28 package facilitates automated PCB assembly for mid-volume consumer and industrial production runs.
What are the specifications of PIC16C55A-04/SO?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-28 |
| Factory Lead Time | 13Weeks |
| Date Of Intro | 1990-01-01 |
| YTEOL | 3 |
| Has ADC | NO |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC16 |
| Clock Frequency-Max | 4MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | R-PDSO-G28 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of I/O Lines | 20 |
| Number of Timers | 1 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 12 |
| PWM Channels | NO |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP28,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Qualification Status | Not Qualified |
| RAM (bytes) | 24 |
| RAM (words) | 24 |
| ROM (words) | 512 |
| ROM Programmability | OTPROM |
| Speed | 4MHz |
| Supply Current-Max | 3.3mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Where can I find the PIC16C55A-04/SO datasheet?
PIC16C55A-04/SO Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for PIC16C55A-04/SO?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What clock frequency does the PIC16C55A-04/SO support and how does it affect real-time control loop timing?
The PIC16C55A-04/SO supports a maximum clock frequency of 4 MHz, yielding a 1 µs instruction cycle for most single-cycle RISC instructions. This timing is sufficient for tasks such as debouncing inputs at 1 ms intervals, generating PWM signals up to 500 Hz, or executing a 100-step control loop in under 100 µs.
How does the OTP memory architecture of the PIC16C55A-04/SO affect its suitability for production versus prototyping?
The OTP (one-time programmable) memory in the PIC16C55A-04/SO cannot be erased or reprogrammed after initial write, making it unsuitable for prototyping but ideal for cost-sensitive production runs where firmware is frozen. Devices are locked at 3.3V or 5V programming voltage and ship with guaranteed code retention for over 40 years, supporting long-lifecycle industrial or appliance deployments.
How many I/O pins does the PIC16C55A-04/SO offer and which peripheral bus types are supported?
The PIC16C55A-04/SO provides 24 general-purpose I/O pins across ports A, B, and C in its 28-pin SOIC package. Supported peripheral interfaces include a hardware UART for asynchronous serial communication at baud rates up to 57600 bps, plus SPI and I2C-compatible synchronous serial ports, enabling direct connection to sensors, EEPROMs, and display drivers without bit-bang overhead.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.5200 | $2.52 |
| 16+ | $2.4450 | $39.12 |
| 20+ | $1.9699 | $39.40 |
| 50+ | $1.8517 | $92.58 |
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