Philips PCA3351CH, PCA3351CP, PCA3351CT, PCA3352CH, PCA3352CP Datasheet

INTEGRATED CIRCUITS

DATA SHEET

PCA3351C; 52C; 53C;

PCD3351A; 52A; 53A

8-bit microcontrollers with DTMF generator and 128 bytes EEPROM

Product specification

1999 Oct 28

Supersedes data of 1996 Dec 18

File under Integrated Circuits, IC03

Philips Semiconductors Product specification

	8-bit microcontrollers with DTMF generator			PCA3351C; 52C; 53C;
	and 128 bytes EEPROM			PCD3351A; 52A; 53A
	CONTENTS		9	TIMING
	1	FEATURES	10	RESET
			11	IDLE MODE
	2	GENERAL DESCRIPTION
			12	STOP MODE
	3	ORDERING INFORMATION
			13	INSTRUCTION SET RESTRICTIONS
	4	BLOCK DIAGRAM
			14	OVERVIEW OF PORT AND
	5	PINNING INFORMATION
				POWER-ON-RESET CONFIGURATIONS
	5.1	Pinning
			15	SUMMARY OF DERIVATIVE REGISTERS
	5.2	Pin description
			16	HANDLING
	6	FREQUENCY GENERATOR
			17	LIMITING VALUES
	6.1	Frequency generator derivative registers
			18	DC CHARACTERISTICS
	6.2	Melody output (P1.7/MDY)
	6.3	Frequency registers	19	AC CHARACTERISTICS
	6.4	DTMF frequencies	20	PACKAGE OUTLINES

6.5Modem frequencies

	6.6	Musical scale frequencies	21	SOLDERING
	7	EEPROM AND TIMER 2 ORGANIZATION	21.1	Reflow soldering
			21.2	Wave soldering
	7.1	EEPROM registers
			21.3	DIP
	7.2	EEPROM latches
			21.4	Repairing soldered joints

7.3EEPROM flags

7.4	EEPROM macros	22	DEFINITIONS
7.5	EEPROM access	23	LIFE SUPPORT APPLICATIONS

7.6Timer 2

8	DERIVATIVE INTERRUPTS

1999 Oct 28

2

Philips Semiconductors	Product specification
8-bit microcontrollers with DTMF generator	PCA3351C; 52C; 53C;
and 128 bytes EEPROM	PCD3351A; 52A; 53A

1 FEATURES

∙8-bit CPU, ROM, RAM, EEPROM and I/O; all in one (28-lead or 32-lead) package

∙ROM:

–2 kbytes (PCA3351C and PCD3351A)

–4 kbytes (PCA3352C and PCD3352A)

–6 kbytes (PCA3353C and PCD3353A)

∙RAM:

–64 bytes (PCA3351C and PCD3351A)

–128 bytes (PCA3352C, PCD3352A, PCA3353C and PCD3353A)

∙128 bytes Electrically Erasable Programmable Read-Only Memory (EEPROM)

∙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

∙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

∙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)

∙Clock frequency: 1 to 16 MHz (3.58 MHz for DTMF suggested)

∙Operating ambient temperature: −25 to +70 °C or 0 to 50 °C

∙Manufactured in silicon gate CMOS process.

2 GENERAL DESCRIPTION

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 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.

Table 1 Differences: PCA335xC and PCD335xA

	TYPE	VPOR	AMBIENT
			TEMP. RANGE
	PCA335xC	fixed at 2.0 V ±0.3 V	0 to 50 °C
	PCD335xA	(1.2 to 3.6 V) ±0.5 V(1)	−25 to +70 °C

Note

1. See Chapter 14, Table 26.

1999 Oct 28

3

Philips Semiconductors Product specification

8-bit microcontrollers with DTMF generator			PCA3351C; 52C; 53C;
and 128 bytes EEPROM			PCD3351A; 52A; 53A
3 ORDERING INFORMATION
TYPE		PACKAGE
NUMBER(1)	NAME	DESCRIPTION		VERSION
PCA335xCP	DIP28	plastic dual in-line package; 28 leads (600 mil)		SOT117-1
PCD335xAP
PCA335xCT	SO28	plastic small outline package; 28 leads; body width 7.5 mm		SOT136-1
PCD335xAT
PCA335xCH	LQFP32	plastic low profile quad flat package; 32 leads; body 7 × 7 × 1.4 mm		SOT358-1
PCD335xAH
Note

1.The types:

a)PCA335xC denotes: PCA3351C, PCA3352C or PCA3353C.

b)PCD335xA denotes: PCD3351A, PCD3352A or PCD3353A.

1999 Oct 28

4

_

28 Oct 1999

RESIDENT ROM

P2.0 to P2.3

TONE

P1.7/MDY

P1.0 to P1.6

2 kbytes

P0.0 to P0.7

4

7

(PCD3351C; 51A)

8

4 kbytes

(PCD3352C; 52A)

PORT 2

PORT 1

6 kbytes

PORT 0

BUFFER

FILTER

BUFFER

(PCD3353C; 53A)

BUFFER

PORT 2

PORT 1

PORT 0

FLIP-FLOP

INTERNAL

FLIP-FLOP

DECODE

FLIP-FLOP

SINE WAVE

CLOCK

MEMORY

BANK

GENERATOR

FREQ.

FLIP-FLOPS

30

HGF

LGF

MELODY

32

TIMER/

PCA3351C

PCD3351A

HIGHER

LOWER

PROGRAM

CONTROL

EVENT

PROGRAM

PROGRAM

STATUS

REGISTER

REGISTER

REGISTER

T1

COUNTER

PCA3352C

PCD3352A

COUNTER

COUNTER

WORD

PCA3353C

PCD3353A

4

8

8

8

8

8

5

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

5

TIMER 2

TIMER 2

EEPROM

EEPROM

EEPROM

INTERRUPT

TEMPORARY

MULTIPLEXER

RELOAD

CONTROL

ADDRESS

DATA

ACCUMULATOR

REGISTER

REGISTER

REGISTER

REGISTER

TRANSFER

LOGIC

REGISTER 1

REGISTER 0

RAM

REGISTER 1

ADDRESS

REGISTER 2

derivative

timer interrupt

REGISTER

REGISTER 3

interrupt

ARITHMETIC

INSTRUCTION

REGISTER 4

REGISTER

REGISTER 5

TEMPORARY

AND

D

REGISTER 6

DECODER

REGISTER 2

E

REGISTER 7

external interrupt

C

8 LEVEL STACK

O

(VARIABLE LENGTH)

EEPROM

D

LOGIC UNIT

T1

E

OPTIONAL SECOND

POWER-ON-RESET

VPOR

REGISTER BANK

CE/T0

DECIMAL

CONDITIONAL

TIMER

ADJUST

DATA STORE

RESET

BRANCH

FLAG

STOP

LOGIC

CARRY

CONTROL AND TIMING

ACC

RESIDENT RAM ARRAY

IDLE

ACC BIT

64 bytes

CE/T0

RESET

XTAL1

XTAL2

TEST

(PCD3351C; 51A)

128 bytes

INTERRUPT

INITIALIZE

OSCILLATOR

(PCD3352C; 52A; 53C; 53A)

MLA537

Fig.1 Block diagram.

DIAGRAM BLOCK 4

and	bit-8
EEPROM bytes 128	with microcontrollers
	generator DTMF

53C; 52C; PCA3351C; 53A 52A; PCD3351A;

Semiconductors Philips

specification Product

Philips Semiconductors Product specification

8-bit microcontrollers with DTMF generator								PCA3351C; 52C; 53C;
and 128 bytes EEPROM								PCD3351A; 52A; 53A
5	PINNING INFORMATION
5.1	Pinning
		P0.1			1			P0.0
							28
		P0.2			2		27	P2.3
		P0.3			3			P2.2
							26
		P0.4			4			P2.1
							25
								VDD
		P0.5			5		24
		P0.6			6		23	TONE
						PCA335xC		VSS
		P0.7			7		22
					8	PCD335xA		P2.0
		T1				(1)	21
		XTAL1			9			P1.7/MDY
							20
					10
		XTAL2					19	P1.6
					11
		RESET					18	P1.5
					12
	(1) PCA335xC denotes:	CE/T0					17	P1.4
	PCA3351C, PCA3352C or				13
		P1.0					16	P1.3
	PCA3353C.
	PCD335xA denotes:
		P1.1			14		15	P1.2
	PCD3351A, PCD3352A or
	PCD3353A.					MLA538

Fig.2 Pin configuration for DIP28 (SOT117-1) and SO28 (SOT136-1).

(1)PCA335xCH denotes: PCA3351CH, PCA3352CH or PCA3353CH.

PCD335xAH denotes: PCD3351AH, PCD3352AH or PCD3353AH.

			P0.4		P0.3		P0.2		P0.1			n.c.		P0.0		P2.3		P2.2
			32		31		30		29			28		27		26		25
n.c.																					P2.1
	1																			24
																					VDD
P0.5	2																			23
P0.6																					TONE
	3																			22
							PCA335xCH														VSS
P0.7	4																			21
T1							PCD335xAH
	5									(1)										20	P2.0
XTAL1																					P1.7/MDY
	6																			19
XTAL2																					P1.6
	7																			18
RESET
	8																			17	n.c.
			9		10		11		12			13		14		15		16		MGB795
			CE/T0		P1.0		P1.1		P1.2			n.c.		P1.3		P1.4		P1.5

Fig.3 Pin configuration for LQFP32 (SOT358-1).

1999 Oct 28

6

Philips Semiconductors	Product specification
8-bit microcontrollers with DTMF generator	PCA3351C; 52C; 53C;
and 128 bytes EEPROM	PCD3351A; 52A; 53A

5.2Pin description

Table 2 SOT117-1 and SOT136-1 packages (for information on parallel I/O ports, see Chapter 14)

		SYMBOL	PIN		TYPE	DESCRIPTION
P0.1 to P0.7			1 to	7	I/O	7 bits of Port 0: 8-bit quasi-bidirectional I/O port
T1			8		I	Test 1 or count input of 8-bit Timer/event counter 1
XTAL1			9		I	crystal oscillator or external clock input
XTAL2			10		O	crystal oscillator output
RESET			11		I	reset input
			12		I	Chip Enable or Test 0
CE/T0
P1.0 to P1.6			13 to	19	I/O	7 bits of Port 1: 8-bit quasi-bidirectional I/O port
P1.7/MDY			20		I/O	1 bit of Port 1: 8-bit quasi-bidirectional I/O port; or melody output
P2.0			21		I/O	1 bit of Port 2: 4-bit quasi-bidirectional I/O port
VSS			22		P	ground
TONE			23		O	DTMF output
VDD			24		P	positive supply voltage
P2.1 to P2.3			25 to	27	I/O	3 bits of Port 2: 4-bit quasi-bidirectional I/O port
P0.0			28		I/O	1 bit of Port 0: 8-bit quasi-bidirectional I/O port
Table 3 SOT358-1 package (for information on parallel I/O ports, see Chapter 14)
		SYMBOL	PIN		TYPE	DESCRIPTION
n.c.			1		−	not connected
P0.5 to P0.7			2 to	4	I/O	3 bits of Port 0: 8-bit quasi-bidirectional I/O port
T1			5		I	Test 1 or count input of 8-bit Timer/event counter 1
XTAL1			6		I	crystal oscillator or external clock input
XTAL2			7		O	crystal oscillator output
RESET			8		I	reset input
			9		I	Chip Enable or Test 0
CE/T0
P1.0 to P1.2			10 to	12	I/O	3 bits of Port 1: 8-bit quasi-bidirectional I/O port
n.c.			13		−	not connected
P1.3 to P1.5			14 to	16	I/O	3 bits of Port 1: 8-bit quasi-bidirectional I/O port
n.c.			17		−	not connected
P1.6			18		I/O	1 bit of Port 1: 8-bit quasi-bidirectional I/O port
P1.7/MDY			19		I/O	1 bit of Port 1: 8-bit quasi-bidirectional I/O port; or melody output
P2.0			20		I/O	1 bit of Port 2: 4-bit quasi-bidirectional I/O port
VSS			21		P	ground
TONE			22		O	DTMF output
VDD			23		P	positive supply voltage
P2.1 to P2.3			24 to	26	I/O	3 bits of Port 2: 4-bit quasi-bidirectional I/O port
P0.0			27		I/O	1 bit of Port 0: 8-bit quasi-bidirectional I/O port
n.c.			28		−	not connected
P0.1 to P0.4			29 to	32	I/O	4 bits of Port 0: 8-bit quasi-bidirectional I/O port

1999 Oct 28

7

Philips Semiconductors	Product specification
8-bit microcontrollers with DTMF generator	PCA3351C; 52C; 53C;
and 128 bytes EEPROM	PCD3351A; 52A; 53A

6 FREQUENCY GENERATOR

A versatile frequency generator section is provided (see Fig.4). For normal operation, use a 3.58 MHz quartz crystal or PXE resonator. The frequency generator includes precision circuitry for dual tone multifrequency (DTMF) signals, which is typically used for tone dialling telephone sets.

Their frequencies are provided in purely sinusoidal form on the TONE output or as square waves on the port line P1.7/MDY.

6.1Frequency generator derivative registers

6.1.1HIGH AND LOW GROUP FREQUENCY REGISTERS

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.

When no tones are generated the TONE output is in 3-state mode.

Table 4 gives the addresses, symbols and access types of the High Group Frequency (HGF) and Low Group Frequency (LGF) registers.

Table 4 Hexadecimal addresses, symbols, access types and bit symbols of the frequency registers

REGISTER	REGISTER	ACCESS				BIT SYMBOLS
ADDRESS	SYMBOL	TYPE	7	6	5	4	3	2	1	0
11H	HGF	W	H7	H6	H5	H4	H3	H2	H1	H0
12H	LGF	W	L7	L6	L5	L4	L3	L2	L1	L0

6.1.2MELODY CONTROL REGISTER (MDYCON)

Table 5 Melody Control Register, MDYCON (address 13H; access type R/W)

7	6	5	4		3	2	1		0
0	0	0	0		0	0	0		EMO
Table 6 Description of MDYCON bits
BIT	SYMBOL				DESCRIPTION
7 to 1	−	These bits are set to a logic 0.
0	EMO	Enable Melody Output. If bit EMO = 0, then P1.7/MDY is a standard port line.
		If bit EMO = 1, then P1.7/MDY is the melody output. EMO = 1 does not inhibit the port
		instructions for P1.7/MDY. Therefore the state of both port line and flip-flop may be read
		in and the port flip-flop may be written by port instructions. However, the port flip-flop of
		P1.7/MDY must remain set to avoid conflicts between melody and port outputs.
		When the HGF contents are zero while EMO = 1, P1.7/MDY is in the HIGH state.

1999 Oct 28

8

Philips Semiconductors	Product specification
8-bit microcontrollers with DTMF generator	PCA3351C; 52C; 53C;
and 128 bytes EEPROM	PCD3351A; 52A; 53A

	8	MELODY CONTROL
		REGISTER
	8	HGF REGISTER
8	INTERNAL BUS
	8	LGF REGISTER

PORT/MELODY

P1.7/

OUTPUT LOGIC

MDY

square wave

DIGITAL

SINE WAVE

SYNTHESIZER

DAC

SWITCHED

SWITCHED

CAPACITOR

CAPACITOR

RC LOW-PASS

TONE

BANDGAP

LOW-PASS

FILTER

VOLTAGE

FILTER

REFERENCE

MLC416

DAC

DIGITAL

SINE WAVE

SYNTHESIZER

Fig.4 Block diagram of the frequency generator and melody output (P1.7/MDY) section.

1999 Oct 28

9

Philips Semiconductors	Product specification
8-bit microcontrollers with DTMF generator	PCA3351C; 52C; 53C;
and 128 bytes EEPROM	PCD3351A; 52A; 53A

6.2Melody output (P1.7/MDY)

The melody output (P1.7/MDY) is very useful for generating musical notes when a purely sinusoidal signal is not required, such as for ringer applications.

The square wave (duty cycle = 12¤23 or 52%) will include the attenuated harmonics of the base frequency, which is defined by the contents of the HGF register (Table 4). However, even higher frequency notes may be produced since the low-pass filtering on the TONE output is not applied to the P1.7/MDY output. This results in the minimum decimal value x in the HGF register (see equation in Section 6.3) being 2 for the P1.7/MDY output, rather than 60 for the TONE output. A sinusoidal TONE output is produced at the same time as the melody square wave, but due to the filtering, the higher frequency sine waves with x < 60 will not appear at the TONE output.

Since the melody output is shared with P1.7, the port flip-flop of P1.7 has to be set HIGH before using the melody output. This to avoid conflicts between melody and port outputs. The melody output drive depends on the configuration of port P1.7/MDY, see Chapter 14, Table 26.

6.3Frequency registers

The two frequency registers HGF and LGF define two frequencies. From these, the digital sine synthesizers together with the Digital-to-Analog Converters (DACs) construct two sine waves. Their amplitudes are precisely scaled according to the bandgap voltage reference. This ensures tone output levels independent of supply voltage and temperature.

The amplitude of the Low Group Frequency sine wave is attenuated by 2 dB compared to the amplitude of the High Group Frequency sine wave.

The two sine waves are summed and then filtered by an on-chip switched capacitor and RC low-pass filters. These guarantee that all DTMF tones generated fulfil the CEPT recommendations with respect to amplitude, frequency deviation, total harmonic distortion and suppression of unwanted frequency components.

The value 00H in a frequency register stops the corresponding digital sine synthesizer. If both frequency registers contain 00H, the whole frequency generator is shut off, resulting in lower power consumption.

The frequency of the sine wave generated from either HGF or LGF is a function of the decimal value ‘x’ held in the register. The variables are related by the equation:

fxtal		£ x £ 255 for TONE output.
f = [-----------------------------23(x + 2)]	; where 60

6.4DTMF frequencies

Assuming an oscillator frequency fxtal = 3.58 MHz, the DTMF standard frequencies can be implemented as

shown in Table 7.

The relationships between telephone keyboard symbols, DTMF frequency pairs and the frequency register contents are given in Table 8.

Table 7 DTMF standard frequencies and their implementation; value = LGF, HGF contents

VALUE	FREQUENCY (Hz)		DEVIATION
(HEX)	STANDARD	GENERATED	(%)	(Hz)
DD	697	697.90	0.13	0.90
C8	770	770.46	0.06	0.46
B5	852	850.45	-0.18	-1.55
A3	941	943.23	0.24	2.23
7F	1209	1206.45	-0.21	-2.55
72	1336	1341.66	0.42	5.66
67	1477	1482.21	0.35	5.21
5D	1633	1638.24	0.32	5.24

Table 8 Dialling symbols, corresponding DTMF frequency pairs and frequency register contents

TELEPHONE	DTMF FREQ.	LGF	HGF
KEYBOARD	PAIRS	VALUE	VALUE
SYMBOLS	(Hz)	(HEX)	(HEX)
0	(941, 1336)	A3	72
1	(697, 1209)	DD	7F
2	(697, 1336)	DD	72
3	(697, 1477)	DD	67
4	(770, 1209)	C8	7F
5	(770, 1336)	C8	72
6	(770, 1477)	C8	67
7	(852, 1209)	B5	7F
8	(852, 1336)	B5	72
9	(852, 1477)	B5	67
A	(697, 1633)	DD	5D
B	(770, 1633)	C8	5D
C	(852, 1633)	B5	5D
D	(941, 1633)	A3	5D
·	(941, 1209)	A3	7F
#	(941, 1477)	A3	67

1999 Oct 28

10

Philips Semiconductors	Product specification
8-bit microcontrollers with DTMF generator	PCA3351C; 52C; 53C;
and 128 bytes EEPROM	PCD3351A; 52A; 53A

6.5Modem frequencies

Again assuming an oscillator frequency fxtal = 3.58 MHz, the standard modem frequencies can be implemented as in Table 9. It is suggested to define the frequency by the HGF register while the LGF register contains 00H, disabling Low Group Frequency generation.

Table 9 Standard modem frequencies and their implementation

	HGF	FREQUENCY (Hz)		DEVIATION
	VALUE
		MODEM	GENERATED	(%)	(Hz)
	(HEX)
	9D	980(1)	978.82	−0.12	−1.18
	82	1180(1)	1179.03	−0.08	−0.97
	8F	1070(2)	1073.33	0.31	3.33
	79	1270(2)	1265.30	−0.37	−4.70
	80	1200(3)	1197.17	−0.24	−2.83
	45	2200(3)	2192.01	−0.36	−7.99
	76	1300(4)	1296.94	−0.24	−3.06
	48	2100(4)	2103.14	0.15	3.14
	5C	1650(1)	1655.66	0.34	5.66
	52	1850(1)	1852.77	0.15	2.77
	4B	2025(2)	2021.20	−0.19	−3.80
	44	2225(2)	2223.32	−0.08	−1.68

Notes

1.Standard is V.21.

2.Standard is Bell 103.

3.Standard is Bell 202.

4.Standard is V.23.

6.6Musical scale frequencies

Finally, two octaves of musical scale in steps of semitones can be realized, again assuming an oscillator frequency

fxtal = 3.58 MHz (Table 10). It is suggested to define the frequency by the HGF register while the LGF contains

00H, disabling Low Group Frequency generation

Table 10 Musical scale frequencies and their implementation

		HGF	FREQUENCY (Hz)
	NOTE	VALUE
			STANDARD(1)	GENERATED
		(HEX)
	D#5	F8	622.3	622.5
	E5	EA	659.3	659.5
	F5	DD	698.5	697.9
	F#5	D0	740.0	741.1
	G5	C5	784.0	782.1
	G#5	B9	830.6	832.3
	A5	AF	880.0	879.3
	A#5	A5	923.3	931.9
	B5	9C	987.8	985.0
	C6	93	1046.5	1044.5
	C#6	8A	1108.7	1111.7
	D6	82	1174.7	1179.0
	D#6	7B	1244.5	1245.1
	E6	74	1318.5	1318.9
	F6	6D	1396.9	1402.1
	F#6	67	1480.0	1482.2
	G6	61	1568.0	1572.0
	G#6	5C	1661.2	1655.7
	A6	56	1760.0	1768.5
	A#6	51	1864.7	1875.1
	B6	4D	1975.5	1970.0
	C7	48	2093.0	2103.3
	C#7	44	2217.5	2223.3
	D7	40	2349.3	2358.1
	D#7	3D	2489.0	2470.4

Note

1. Standard scale based on A4 @ 440 Hz.

1999 Oct 28

11