PIC16C63-04E/SP
PIC16C63-04E/SP - 8-bit CMOS MCU, 7KB EPROM, 22 I/O | Microchip
The Microchip Technology PIC16C63-04E/SP is an 8-bit RISC CMOS microcontroller built on EPROM/ROM technology, featuring 7KB of program memory (4K x 14), 192 bytes of RAM, and 22 digital I/O pins in a 28-pin SPDIP (SP) package. Operating up to 4 MHz clock speed (the "-04" speed grade), the part supports supply voltages from 4.0V to 5.5V and is qualified for the Extended temperature range (-40C to +125C). The "E" suffix denotes the EPROM windowed ceramic package variant used for prototyping and engineering development.
A PIC microcontroller is a low-power, high-performance 8-bit RISC (Reduced Instruction Set Computer) MCU from Microchip's mid-range PIC16 family. PIC MCUs sit at the foundation of embedded control systems, providing deterministic single-cycle instruction execution, on-chip peripherals (timers, USART, capture/compare/PWM), and non-volatile program memory in a single chip. The PIC16C63 belongs to the mid-range PIC16C6X family, which uses EPROM (erasable programmable read-only memory) technology for code storage, allowing code to be erased via an ultraviolet window before reprogramming. This makes PIC16C parts well suited to engineering development, low-volume production, and applications where field firmware updates via UV erase are acceptable.
Key features include a fully-static design supporting DC to 20 MHz operation, low-power consumption of 15 uA typical at 5V/4MHz and 1 uA typical at 3V/32kHz, three hardware timers, a USART serial port, 22 I/O pins, and a 14-bit instruction word. The architecture provides only 35 single-word instructions, all of which execute in a single cycle except for program branches (two cycles). Brown-out reset and power-on reset are integrated on chip, and an integrated watchdog timer improves field reliability. The SPDIP-28 (Skinny Plastic DIP) footprint is the industry-standard through-hole 0.3-inch DIP-28 mechanical outline, allowing easy breadboarding and socketed programming.
The PIC16C63 is implemented using Microchip's CMOS EPROM/ROM technology with a Harvard architecture - separate program and data buses - enabling simultaneous instruction fetch and data access. The 8-bit ALU, 14-bit instruction width, and 8-level hardware stack provide deterministic real-time control. Compared with 8051-class MCUs, the PIC16C6X family delivers higher MIPS per MHz (4 MIPS at 10 MHz vs typically 1 MIPS for an 8051 at 12 MHz) and lower active current draw, making it attractive for battery-powered and thermally constrained designs.
Typical applications include industrial control and automation, automotive body and chassis subsystems, instrumentation, sensor signal conditioning, low-speed serial communication links, and educational/development platforms. The USART peripheral supports RS-232/RS-485 communication, while the CCP module supports PWM output for motor or LED control. The EPROM windowed ceramic package is reserved for development only - high-volume production should migrate to the OTP (one-time programmable) PIC16C63-04/SP variant, which uses the same SPDIP-28 footprint but is lower cost.
When designing with the PIC16C63-04E/SP, note that the EPROM windowed ceramic package is significantly more expensive than the OTP plastic variant, so it should be reserved for development and engineering samples. All PIC16C63 speed and temperature variants share the same SPDIP-28 pinout, enabling a single PCB layout to support engineering, prototype, and production builds. Ensure supply voltage is held within 4.0V to 5.5V, with decoupling capacitors placed close to VDD/VSS pins.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers select the right variant for development versus production.
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