PCD3351A

This data sheet details the specific properties of the devices referred to. The shared properties of the PCD33xxA family of microcontrollers are described in the "PCD33xxA family" data sheet, which should be read in conjunction with this publication. 'PCA3351C; 52C; 53C' denotes the types PCA3351C, PCA3352C and PCA3353C. Unless specified, these types will hereafter be referred to collectively as 'PCA335xC'. 'PCD3351A; 52A; 53A' denotes the types PCD3351A, PCD3352A, PCD3353A. Unless specified, these types will hereafter be referred to collectively as 'PCD335xA'.

The PCA335xC and PCD335xA are microcontrollers designed primarily for telephony applications. They include an on-chip generator for dual tone multifrequency (DTMF), modem and musical tones. In addition to dialling, generated frequencies can be made available as square waves for melody generation, providing ringer operation.

The PCA335xC and PCD335xA also incorporate 128 bytes of EEPROM, permitting data storage without battery backup. The EEPROM can be used for storing telephone numbers, particularly for implementing redial functions.

The PCA335xC and PCD335xA can be emulated with the OTP microcontrollers PCD3755A and PCD3755E. See Chapter 14, Table 25.

The instruction set of PCD3351A is similar to that of the MAB8048 and is a sub-set of that listed in the "PCD33xxA family" data sheet.

The differences between PCA335xC and PCD335xA are shown in Table 1.