This document describes the PCA3351C series and PCD3351A series of 8-bit microcontrollers with DTMF generator and 128 bytes EEPROM. The document includes features and general description of the products, as well as ordering information, pinning information, frequency generator, EEPROM and timer 2 organization, derivative interrupts, timing, reset, idle mode, stop mode, instruction set restrictions, overview of port and power-on-reset configurations, summary of derivative registers, handling, limiting values, DC characteristics, AC characteristics, package outlines, soldering, definitions, and life support applications.
The document details the properties of the PCA335xC (PCA3351C, PCA3352C, PCA3353C) and PCD335xA (PCD3351A, PCD3352A, PCD3353A) families of microcontrollers. These devices are designed primarily for telephony applications and integrate an 8-bit CPU with ROM, RAM, I/O, a DTMF generator, modem frequencies, and musical tone capabilities in a single chip.
| CPU Architecture | 8-bit CPU, ROM, RAM, EEPROM and I/O |
|---|---|
| ROM Size (PCA3351C/PCD3351A) | 2 kbytes |
| RAM Size (PCA3352C/PCD3352A) | 128 bytes |
| EEPROM Size | 128 bytes |
| I/O Port Lines | 20 quasi-bidirectional I/O port lines |
| Supply Voltage Range | 1.8 to 6 V |
| Clock Frequency Range | 1 to 16 MHz |
The operating ambient temperature range for PCA335xC devices is fixed at 0 to +50 °C.
The operating ambient temperature range for PCD335xA devices is -25 to +70 °C.
A clock frequency of 3.58 MHz is suggested for the DTMF generator.