Microchip PIC16C505T-04I/SL 8-Bit OTP Microcontroller Overview

The Microchip PIC16C505T-04I/SL is an 8-bit microcontroller from Microchip Technology’s renowned PIC® family, designed for cost-sensitive and high-volume embedded control applications. Fabricated with OTP (One-Time Programmable) memory, this MCU offers a reliable and economical solution for products requiring firmware stability and where future code changes are not anticipated.

Housed in a compact 14-pin SOIC (SL) package, the device is well-suited for space-constrained designs. Its core operates at a maximum frequency of 4 MHz, achieving a performance level of up to 1 MIPS. The PIC16C505 integrates a suite of core peripherals, including a 8-bit real-time clock/counter (TMR0), a Watchdog Timer (WDT) for enhanced reliability, and a power-on reset (POR) circuit for consistent startup behavior.

A key feature of this microcontroller is its set of high-current sink/source I/O ports. With 12 I/O pins available, many of which can be configured to provide higher drive capability, the device can directly interface with LEDs or other peripherals without requiring external drivers, thus simplifying board design and reducing the overall Bill of Materials (BOM).

The PIC16C505 architecture employs a simple yet efficient RISC-based design with just 33 single-word instructions, making it relatively straightforward to program. Its OTP program memory size is 512 x 12 words, complemented by 25 bytes of RAM for data storage. The microcontroller also features an on-chip RC oscillator with selectable frequencies, which can be configured to eliminate the need for an external crystal, further reducing component count and system cost.

Operating over an industrial temperature range (-40°C to +85°C), denoted by the "I" in its part number, this MCU is robust enough for demanding environments in automotive, industrial, and consumer applications.

ICGOODFIND: The PIC16C505T-04I/SL is an optimal choice for developers seeking a low-cost, simple, and reliable 8-bit microcontroller for final production runs. Its combination of OTP memory, sufficient I/O, and integrated oscillator makes it a powerhouse for dedicated control tasks.

Keywords: OTP Memory, 8-bit Microcontroller, RISC Architecture, Industrial Temperature, High-Current I/O.