1996 Dec 18

3

Philips Semiconductors

Product specification

8-bit microcontrollers with DTMF

generator and 256 bytes EEPROM

PCA3354C; PCD3354A

1

FEATURES

• 8-bit CPU, ROM, RAM, EEPROM and I/O; all in a

44-lead quad flat package

• 8 kbytes ROM; 256 bytes RAM

• 256 bytes Electrically Erasable Programmable Read

Only Memory (EEPROM)

• Over 100 instructions (based on MAB8048) all of

1 or 2 cycles

• 36 quasi-bidirectional I/O port lines

• 8-bit programmable Timer/event counter 1

• 8-bit reloadable Timer 2

• Three single-level vectored interrupts:

– external

– 8-bit programmable Timer/event counter 1

– derivative; triggered by reloadable Timer 2

• Two test inputs, one of which also serves as the external

interrupt input

• DTMF, modem, musical tone generator

• Reference for supply and temperature-independent

tone output

• Filtering for low output distortion (CEPT compatible)

• Melody output for ringer application

• Programmable DTMF clock divider

• Power-on-reset

• Stop and Idle modes

• Supply voltage: 1.8 to 6 V (DTMF tone output and

EEPROM erase/write from 2.5 V)

• CPU clock frequency: 1 to 16 MHz (3.58 MHz or

10.74 MHz for DTMF)

• Operating ambient temperature:

–

−25 to +70 °C (PCD3354A)

– 0 to 50

°C (PCA3354C)

• Manufactured in silicon gate CMOS process.

2

GENERAL DESCRIPTION

This data sheet details the specific properties of the

PCA3354C and PCD3354A. 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.

The PCA3354C and PCD3354A are microcontrollers

oriented towards telephony applications. They include

8 kbytes ROM, 256 bytes RAM, 36 I/O lines, and an

on-chip generator for dual tone multifrequency (DTMF),

modem and musical tones. In addition to dialling, the

generated frequencies can be made available as square

waves for melody generation, providing ringer operation.

The PCA3354C and PCD3354A also incorporate

256 bytes of EEPROM, permitting data storage without

battery backup. The EEPROM can be used for storing

telephone numbers, particularly for implementing redial

functions.

The differences between PCA3354C and PCD3354A are

shown in Table 1.

The instruction set is similar to the MAB8048 and is a

sub-set of that listed in the

“PCD33xxA family” data sheet.

Table 1

Differences: PCA3354C and PCD3354A

Note

1. See Chapter 13, Table 24.

TYPE

AMBIENT

TEMP. RANGE

PCA3354C

fixed at 2.0 V

±0.3 V

0 to 50

°C

PCD3354A

(1.2 to 3.6 V)

−25 to +70 °C

3

ORDERING INFORMATION (see note 1)

Note

1. Please refer to the Order Entry Form (OEF) for this device for the full type number to use when ordering. This type

number will also specify the required program and the ROM mask options.

TYPE NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

PCA3354CH

QFP44

plastic quad flat package; 44 leads (lead length 2.35 mm);

body 14

× 14 × 2.2 mm

SOT205-1

PCD3354AH