Philips SAA3010 Datasheet

INTEGRATED CIRCUITS

DATA SH EET

SAA3010

Infrared remote control transmitter
RC-5

Product specification
File under Integrated Circuits, IC01

June 1989

Philips Semiconductors Product specification

Infrared remote control transmitter RC-5 SAA3010

FEA TURES

• Low voltage requirement

• Biphase transmission technique

• Single pin oscillator

• Test mode facility

The device can generate 2048 different commands and
utilizes a keyboard with a single pole switch for each key.
The commands are arranged so that 32 systems can be
addressed, each system containing 64 different
commands. The keyboard interconnection is illustrated by
Fig.3.

The circuit response to legal (one key pressed at a time)

GENERAL DESCRIPTION

and illegal (more than one key pressed at a time) keyboard

operation is specified in the section “Keyboard operation”.
The SAA3010 is intended as a general purpose (RC-5)
infrared remote control system for use where a low voltage
supply and a large debounce time are expected.

QUICK REFERENCE DATA

PARAMETER SYMBOL MIN. TYP. MAX. UNIT

Supply voltage range V
Input voltage range (note 1) V
Input current I
Output voltage range (note 1) V
Output current I
Operating ambient temperature

DD
I

I

O

O

T

amb

2 − 7V

−0.5 − VDD+0.5 V

−−±10 mA

−0.5 − VDD+0.5 V

−−±10 mA

−25 − 85 °C

range

Note

1. V

+0.5 V must not exceed 9 V.

DD

WARNING

The use of this device must conform with the Philips Standard number URT-0421.

PACKAGE OUTLINES

28-lead DIL plastic; (SOT117); SOT117-1; 1996 September 11.
28-lead mini-pack; plastic (SO28; SOT136A); SOT136-1; 1996 September 11.

June 1989 2

Philips Semiconductors Product specification

Infrared remote control transmitter RC-5 SAA3010

BLOCK DIAGRAM

handbook, full pagewidth

SAA3010

OSC

18

OSC

3 × 2

1

TP1
TP2

SSM

Z3
Z2
Z1
Z0

X7
X6
X5
X4
X3
X2
X1
X0

20
19

2

6
5
4
3

1
27
26
25
24
23
22

21

TEST

MODE

MODE

SELECTION

KEYBOARD

ENCODER

OUTPUT

MASTER

RESET

GENERATOR

CONTROL

UNIT

COMMAND

AND

SYSTEM

ADDRESS

LATCH

PARALLEL

TO SERIAL

CONVERTER

DECODER

13

2

DIVIDER

KEYBOARD

DRIVER

DECODER

17

DR0

16

DR1

15

DR2

13

DR3

12

DR4

11

DR5

10

DR6

9

DR7

8

DATA

7

MDATA

Fig.1 Block diagram.

June 1989 3

14

VSSV

28

MGE347

DD

Philips Semiconductors Product specification

Infrared remote control transmitter RC-5 SAA3010

PINNING

PIN MNEMONIC

(1)

FUNCTION

1 X7 (IPU) sense input from key matrix
2 SSM (I) system mode selection input
3-6 Z0-Z3 (IPU) sense inputs from key matrix
7 MDATA (OP3) generated output data

modulated with 1/12 the
oscillator frequency at a 25%

duty factor
8 DATA (OP3) generated output information
9-13 DR7-DR3

scan drivers

(ODN)

14 V

SS

15-17 DR2-DR0

ground (0 V)

scan drivers

(ODN)
18 OSC (I) oscillator input
19 TP2 (I) test point 2
20 TP1 (I) test point 1
21-27 X0-X6 (IPU) sense inputs from key matrix
28 V

(I) voltage supply

DD

Note

1. (I) = input
(IPU) = input with p-channel pull-up transistor
(ODN) = output with open drain n-channel transistor
(OP3) = output 3-state

handbook, halfpage

X7

SSM

Z0
Z1
Z2
Z3

MDATA

DATA

DR7
DR6
DR5
DR4
DR3
V

SS

1
2
3
4
5
6
7
8

9
10
11
12
13

SAA3010

MGE346

V

28

DD

X6

27

X5

26

X4

25

X3

24
23

X2
X1

22
21

X0
TP1

20

TP2

19

OSC

18

DR0

17

DR1

16
1514

DR2

June 1989 4

Fig.2 Pinning diagram.

Philips Semiconductors Product specification

Infrared remote control transmitter RC-5 SAA3010

handbook, full pagewidth

DR0 DR1 DR2 DR3 DR4 DR5 DR6 DR7

17 16 15 13 12 11 10 9

X0

21

X1

22

X2

23

X3

24

X4

25

X5

26

X6
X7

27
1

SAA3010

Z0

3

Z1

4

Z2

5

Z3

6

8 7 2 20 19 18

DATA MDATA SSM TP1 TP2 OSC

Fig.3 Keyboard interconnection.

MGE348

June 1989 5

Philips Semiconductors Product specification

Infrared remote control transmitter RC-5 SAA3010

FUNCTIONAL DESCRIPTION

Keyboard operation

Every connection of one X-input and one DR-output will be recognized as a legal key operation and will cause the device
to generate the corresponding code. The same applies to every connection of one Z-input to one DR-output with the
proviso that SSM must be LOW. When SSM is HIGH a wired connection must exist between a Z-input and a DR-output.
If no connection is present the system number will not be generated. Activating two or more X-inputs, Z-inputs or Z-inputs
and X-inputs at the same time is an illegal action and inhibits further activity (oscillator will not start).

When one X- or Z-input is connected to more than one DR-output, the last scan signal will be considered as legal.
The maximum value of the contact series resistance of the switched keyboard is 7 kΩ.

Inputs

In the quiescent state the command inputs X0 to X7 are held HIGH by an internal pull-up transistor. When the system
mode selection (SSM) input is LOW and the system is quiescent, the system inputs Z0 to Z3 are also held HIGH by an
internal pull-up transistor. When SSM is HIGH the pull-up transistor for the Z-inputs is switched off, in order to prevent
current flow, and a wired connection in the Z-DR matrix provides the system number.

Outputs

The output signal DATA transmits the generated information in accordance with the format illustrated by Fig.4 and
Tables 1 and 2. The code is transmitted using a biphase technique as illustrated by Fig.5. The code consists of four parts:

• Start part −1.5 bits (2 × logic 1)

• Control part −1 bit

• System part −5 bits

• Command part −6 bits

The output signal MDATA transmits the generated information modulated by 1/12 of the oscillator frequency with a 50%
duty factor.

In the quiescent state both DATA and MDATA are non-conducting (3-state outputs).
The scan driver outputs DR0 to DR7 are open drain n-channel transistors and conduct when the circuit is quiescent.

After a legal key operation the scanning cycle is started and the outputs switched to the conductive state one by one.
The DR-outputs were switched off at the end of the preceding debounce cycle.

June 1989 6