Philips pcd3349a DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

PCD3349A

8-bit microcontroller with
DTMF generator

Product specification
Supersedes data of 1996 Dec 18
File under Integrated Circuits, IC03

1998 May 11

Philips Semiconductors Product specification

8-bit microcontroller with DTMF generator PCD3349A

CONTENTS

1 FEATURES
2 GENERAL DESCRIPTION
3 ORDERING INFORMATION
4 BLOCK DIAGRAM
5 PINNING INFORMATION

5.1 Pinning

5.2 Pin description
6 FREQUENCY GENERATOR

6.1 Frequency generator derivative registers

6.2 Frequency registers

6.3 DTMF frequencies

6.4 Modem frequencies

6.5 Musical scale frequencies
7 TIMING
8 RESET
9 STOP MODE
10 IDLE MODE
11 INSTRUCTION SET
12 SUMMARY OF MASK OPTIONS
13 LIMITING VALUES
14 HANDLING
15 DC CHARACTERISTICS
16 AC CHARACTERISTICS
17 PACKAGE OUTLINES
18 SOLDERING

18.1 Introduction

18.2 DIP

18.3 SO
19 DEFINITIONS
20 LIFE SUPPORT APPLICATIONS

1998 May 11 2

Philips Semiconductors Product specification

8-bit microcontroller with DTMF generator PCD3349A

1 FEATURES

• 8-bit CPU, ROM, RAM, I/O in a single 28-lead package

• 4-kbyte ROM

• 224-byte RAM

• Over 100 instructions (based on MAB8048) all of 1 or 2

cycles

• 20 quasi-bidirectional I/O port lines

• 8-bit programmable Timer/event counter 1

• 2 single-level vectored interrupts:

– external
– Timer/event counter 1

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

• DTMF tone generator

• Reference for supply and temperature-independent

TONE output

• Filtering for low output distortion (CEPT compatible)

• Power-on-reset

• Stop and Idle modes

• Supply voltage: 1.8 to 6 V (DTMF TONE output from

2.5 V)

• Low standby voltage of 1 V

• Low Stop mode current of 1 µA (typical)

• Clock frequency: 1 to 16 MHz (3.58 MHz for DTMF

suggested)

• Manufactured in silicon gate CMOS process.

2 GENERAL DESCRIPTION

The PCD3349A provides 4 kbytes of Program Memory,
224 bytes of RAM and 20 I/O lines.

The PCD3349A is a microcontroller which has been
designed primarily for telecom applications. It includes an
on-chip dual tone multi-frequency (DTMF) generator.

The instruction set is based on that of the MAB8048 and is
software compatible with the PCD33xxA family.

This data sheet details the specific properties of the
PCD3349A. The shared characteristics of the PCD33xxA
family of microcontrollers are described in the

Family”
Section PCD33xxA Family”

conjunction with this publication.

data sheet and also in

, which should be read in

“Data Handbook IC03;

“PCD33xxA

3 ORDERING INFORMATION

TYPE NUMBER

PCD3349AP DIP28
PCD3349AT SO28

1998 May 11 3

NAME DESCRIPTION VERSION

plastic dual in-line package; 28 leads (600 mil)
plastic small outline package; 28 leads; body width 7.5 mm

PACKAGE

SOT117-1
SOT136-1

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1998 May 11 4

4 BLOCK DIAGRAM

8-bit microcontroller with DTMF generator PCD3349A

Philips Semiconductors Product specification

REGISTER

INTERNAL

CLOCK

FREQUENCY

30

32

T1

POWER-ON-RESET

RESET

TONE

FILTER

SINE WAVE

GENERATOR

88

HGF

8

TIMER/
EVENT

COUNTER

LGF

REGISTER

8

timer interrupt

V

POR

8

INTERRUPT

8

LOGIC

P2.0 to P2.3

PORT 2

FLIP-FLOP

4

88

ACCUMULATOR

external interrupt

STOP
IDLE

INTERRUPT

4

PORT 2

BUFFER

CE / T0

TEMPORARY

REGISTER 2

CONTROL & TIMING

INITIALIZE

PORT 1

FLIP-FLOP

8

8

TEMPORARY

REGISTER 1

OSCILLATOR

P1.0 to P1.7

8

PORT 1

BUFFER

PCD3349A

ARITHMETIC

LOGIC UNIT

DECIMAL

ADJUST

XTAL 2XTAL 1RESET

RESIDENT ROM

4 kbytes

PORT 0

PROGRAM

STATUS

WORD

FLIP-FLOP

D
E
C
O
D
E

RESIDENT RAM ARRAY

DECODE

MEMORY

BANK

FLIP-FLOPS

HIGHER
PROGRAM
COUNTER

5 888 8

88 8 8

INSTRUCTION

REGISTER

&

DECODER

LOWER

PROGRAM

COUNTER

CONDITIONAL

BRANCH

LOGIC

RAM

ADDRESS

REGISTER

CE / T0
T1

TIMER

FLAG

CARRY
ACC

ACC BIT

TEST

P0.0 to P0.7

8

PORT 0

BUFFER

MULTIPLEXER

REGISTER 0
REGISTER 1
REGISTER 2
REGISTER 3
REGISTER 4
REGISTER 5
REGISTER 6
REGISTER 7

8 LEVEL STACK

(VARIABLE LENGTH)

OPTIONAL SECOND

REGISTER BANK

DATA STORE

224 bytes

MBG098

handbook, full pagewidth

Fig.1 Block diagram.

Philips Semiconductors Product specification

8-bit microcontroller with DTMF generator PCD3349A

5 PINNING INFORMATION

5.1 Pinning

handbook, halfpage

RESET

1

P0.1 P0.0

2

P0.2

3

P0.3
P0.4

4

P0.5

5
6

P0.6
P0.7

7

PCD3349A

T1

8
9

XTAL1

10

XTAL2

11

CE/T0

12

P1.0

13
14

P1.1

MBG087

5.2 Pin description Table 1 SOT117-1 and SOT136-1 packages

SYMBOL PIN DESCRIPTION

P0.0 to P0.7 28, 1 to 7 Port 0: 8 quasi-bidirectional

28
27

P2.3
P2.2

26
25

P2.1
V

24

DD

23

TONE
V

22

SS

P2.0

21
20

P1.7

19

P1.6

18

P1.5
P1.4

17
16

P1.3

15

P1.2

T1 8 Test 1 or count input of 8-bit

XTAL1 9 crystal oscillator or external

XTAL2 10 crystal oscillator output
RESET 11 reset input
CE/

T0 12 Chip Enable or Test 0

P1.0 to P1.7 13 to 20 Port 1: 8 quasi-bidirectional

P2.0 to P2.3 21, 25,

26, 27

V

SS

22 ground
TONE 23 DTMF output
V

DD

24 positive supply voltage

I/O lines

Timer/event counter 1

clock input

I/O lines
Port 2: 4 quasi-bidirectional

I/O lines

Fig.2 Pin configuration (SOT117-1 and SOT136-1).

1998 May 11 5

Philips Semiconductors Product specification

8-bit microcontroller with DTMF generator PCD3349A

6 FREQUENCY GENERATOR

A versatile frequency generator section is provided (see
Fig.3). For normal operation, use a 3.58 MHz quartz
crystal or PXE resonator. The frequency generator

The TONE output can alternatively issue twelve modem
frequencies for data rates between 300 and 1200 bits/s.

In addition to DTMF and modem frequencies, two octaves

of musical scale in steps of semitones are available.
includes precision circuitry for dual tone multifrequency
(DTMF) signals, which is typically used for tone dialling
telephone sets.

6.1 Frequency generator derivative registers

Table 2 gives the derivative addresses, mnemonics and access types of the frequency generator derivative registers.
The addresses 03H to FFH are not used.

Table 2 Addresses of the frequency generator derivative registers

ADDRESS REGISTER 7 6 5 4 3 2 1 0

(2)

(1)

H7 H6 H5 H4 H3 H2 H1 H0

L7 L6 L5 L4 L3 L2 L1 L0

01H HGF
02H LGF

Notes

1. HGF = High Group Frequency; access type W.

2. LGF = Low Group Frequency; access type W.

book, full pagewidth

8

REGISTER

8 internal bus

8

REGISTER

HGF

LGF

DIGITAL

SINE WAVE

SYNTHESIZER

SWITCHED-

CAPACITOR

BANDGAP
VOLTAGE

REFERENCE

DIGITAL

SINE WAVE

SYNTHESIZER

DAC

DAC

SWITCHED­CAPACITOR

LOW-PASS FILTER

Fig.3 Block diagram of the frequency generator section.

RC LOW-PASS

FILTER

MBG099

TONE

1998 May 11 6