Philips PCA84C222, PCA84C422, PCA84C622, PCA84C822 Technical data

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PCA84C122; 222; 422; 622; 822

8-bit microcontrollers for
remote control transmitters

Product specification
Supersedes data of February 1994
File under Integrated Circuits, IC14

Philips Semiconductors

1995 May 01

Philips Semiconductors Product specification

8-bit microcontrollers for
remote control transmitters

CONTENTS

1 FEATURES
2 GENERAL DESCRIPTION

2.1 Important note
3 MEMORY AND I/O CONFIGURATIONS
4 ORDERING INFORMATION
5 BLOCK DIAGRAM
6 PINNING INFORMATION

6.1 Pinning

6.2 Pin description
7 POWER-ON-RESET STATUS AND PORT

OPTIONS

8 HARDWARE MODULATOR

8.1 Interface between the 84CXXX core and
derivative logic

8.2 Instructions for data transfer between the
84CXXX core and derivative logic

8.3 Operation of the Hardware Modulator

9 INTERRUPTS

9.1 Internal timer/counter

9.2 External keypad wake-up and T0/INT pin

10 OUTPUT DRIVER
11 WATCHDOG TIMER (WDT)
12 LIMITING VALUES
13 DC CHARACTERISTICS
14 AC CHARACTERISTICS
15 APPLICATION INFORMATION
16 PACKAGE OUTLINES
17 SOLDERING

17.1 Plastic small outline packages

17.2 Plastic dual in-line packages

18 DEFINITIONS
19 LIFE SUPPORT APPLICATIONS

PCA84C122; 222; 422; 622; 822

1995 May 01 2

Philips Semiconductors Product specification

8-bit microcontrollers for
remote control transmitters

1 FEATURES

• 84CXXX CPU

• ROM, RAM and I/O configurations are device

dependent; see Chapter 3

• Two test inputs: T0 (ANDed with Port 1 input lines)

and T1

• 3 single-level vectored interrupt sources:

– external (T0/INT and Port 1, for keypad press

wake-up function)
– timer/counter (TI)
– hardware modulator interrupt

• 8-bit programmable timer/counter with 5-bit pre-scaler

• Power saving: Idle and Stop modes are provided

• Hardware Modulator providing pulse bursts, with:

– programmable duty factor for each pulse
– programmable number of pulses

• One output line from the Hardware Modulator to control
the driver transistor for the infrared LED (IR-LED).
Capable of sinking 27 mA at V

• Watchdog Timer to keep the transmitter from being
locked or malfunction

• Available packages: SO and DIP types (SO20, SO24,
SO28, SDIP24 and DIP20); see Chapter 4

• On-chip oscillator: 455 kHz to 6 MHz

• Single supply voltage: 2.0 V to 5.5 V

• Operating temperature: −20 to +50 °C.

2 GENERAL DESCRIPTION

The PCA84C122 is a stand-alone microcontroller
designed for use in remote control transmitters for a wide
range of applications.

The PCA84C122 provides a number of dedicated
hardware functions for remote controller applications.
These functions include the following additional blocks to
the 84CXXX core:

• Interrupt Gate

• Hardware Modulator

• Output Driver

• Watchdog Timer.

= 2.0 V, V

DD

OUT

= 1.0 V

PCA84C122; 222; 422; 622; 822

Although the PCA84C122 is specifically referred to
throughout this data sheet, the information applies to all
the devices. The differences between the PCA84C122
and the other devices are specified in Chapter 3.

Figure 2 shows the general block diagram of the device.
The 84CXXX core plus 8 kbytes ROM and 64 bytes RAM
has the same function as described in the PCF84CXXX
family description (see

When the transmitter is not in use the microcontroller is in
Stop mode and the oscillator is halted. The AND gate
connected to the Port 1 (P10 to P17) lines provides the
wake-up to end the Stop mode.

The Hardware Modulator produces pulse bursts according
to the required protocol. The ON-time and OFF-time of
each pulse (i.e. duty factor) and the number of pulses are
controlled by software.

The Watchdog Timer (WDT) will reset the PCA84C122
when it has not been reloaded (reset) in time, because the
program has run out of sequence (endless loop,
continuous Idle mode, etc.). During Stop mode the
oscillator is halted, therefore the Watchdog Timer is not
running.

Automatic system reset is generated by the WDT if the
timer is not reset before overflow from counting within
a certain period of time.

The Output Driver can handle sufficient current to drive a
single transistor, that provides the required current for the
IR-LED.

2.1 Important note

This data sheet details the specific properties of the
PCA84C122; PCA84C222; PCA84C422; PCA84C622
and PCA84C822. The shared characteristics of the family
of microcontrollers are described in the PCF84CXXXA
Family single-chip 8-bit Microcontroller of

IC14”

, which should be read in conjunction with this data

sheet.

“Data Handbook IC14”

).

“Data Handbook

1995 May 01 3

Philips Semiconductors Product specification

8-bit microcontrollers for
remote control transmitters

3 MEMORY AND I/O CONFIGURATIONS

DEVICE I/O LINES ROM RAM

PCA84C122A 16
PCA84C122B 12
PCA84C222A 16
PCA84C222B 12
PCA84C422A 16
PCA84C422B 12
PCA84C622A 16
PCA84C622B 12
PCA84C622C 20
PCA84C822A 16

PCA84C822C 20

Note

1. 4 I/O lines with 10 mA sink capability.

(1)

(1)

PCA84C122; 222; 422; 622; 822

1K

2K

4K

6K

8KPCA84C822B 12

32 bytes

64 bytes

4 ORDERING INFORMATION

TYPE NUMBER

(1)

PACKAGE

NAME DESCRIPTION VERSION

PCA84CX22AP SDIP24 plastic shrink dual in-line package; 24 leads (400 mil) SOT234-1
PCA84CX22AT SO24 plastic small outline package; 24 leads; body width 7.5 mm SOT137-1
PCA84CX22BP DIP20 plastic dual in-line package; 20 leads (300 mil) SOT146-1
PCA84CX22BT SO20 plastic small outline package; 20 leads; body width 7.5 mm SOT163-1
PCA84C622CT
PCA84C822CT

SO28

plastic small outline package; 28 leads; body width 7.5 mm;
low stand-off height

SOT136-1

Note

1. ‘X’ in the type number denotes the numbers: 1, 2, 4, 6 and 8.

technology:

PC = CMOS

temperature range:

A = 20 to 50 C

PC

o

84C122

A

P

package:

P = plastic DIL
T = plastic mini-pack (SO)

generic type number

MLA973 - 1

Fig.1 Numbering scheme.

1995 May 01 4

Philips Semiconductors Product specification

8-bit microcontrollers for
remote control transmitters

5 BLOCK DIAGRAM

XTAL

XTAL1

OSCILLATOR

XTAL2

HARDWARE

MODULATOR

PCA84C122; 222; 422; 622; 822

OUT

DRIVER

OUTPUT

MCD248 - 2

T0/INT

PCA84CXXX

RAM

64 bytes

ROM

8 kbytes

osc

f / 30

DD

V

WDT

CORE

84CXXX

T1

P20

RESET

T0/INT

P21

P22

P23

P17

P16

P15

P14

P13

P12

P11

P10

P07

P06

P05

P04

P03

P02

P01

P00

SS

V

handbook, full pagewidth

Fig.2 Block diagram.

1995 May 01 5

Philips Semiconductors Product specification

8-bit microcontrollers for
remote control transmitters

6 PINNING INFORMATION

6.1 Pinning

P14 P15

1
2

P01
P00

3

T0 / INT

RESET

4

T1

5
6

84CX22AP

V

DD

XTAL2
XTAL1

P04
P05
P16 P17

84CX22AT

7
8

9
10
11
12

MCD251 - 2

PCA84C122; 222; 422; 622; 822

1

24

P02

23

P03

22
21

OUT
V

20

SS

P10

19

P11

18

P12

17

P13

16

P07

15

P06

14
13

P22

2

P14

3

P01

4

P00

T0/INT

RESET

XTAL2
XTAL1

5
6

T1

7

84C622CT

V

DD

P04
P05
P16 P17
P20

84C822CT

8

9
10
11
12
13

MLA977 - 1

P23

28

P15

27

P02

26

P03

25
24

OUT
V

SS

23

P10

22

P11

21

P12

20

P13

19

P07

18

P06

17
16

P21

1514

Fig.3 Pin configurations PCA84CX22AP (SDIP24)

and PCA84CX22AT(SO24).

1

P01

2

P00

T1

V

DD
XTAL2
XTAL1

P04
P05

3
4
5

84CX22BT

6
7
8
9

10

MCD250 - 2

T0 / INT OUT

RESET

20

P02

19

P03

18

V

17

SS

16

P10

15

P11
P12

14

P13

13

P07

12

P06

11

Fig.4 Pin configuration PCA84CX22CT (SO28).

1

P10

V

SS

OUT

P03
P02
P01

P00

T0/INT

RESET

T1

2
3
4
5

84CX22BP

6
7
8
9

10

MLA975 - 2

20

P11

19

P12
P13

18
17

P07
P06

16

P05

15

P04

14

XTAL1

13

XTAL2

12

V

11

DD

Fig.5 Pin configuration PCA84CX22BT (SO20). Fig.6 Pin configuration PCA84CX22BP (DIP20).

1995 May 01 6

Philips Semiconductors Product specification

8-bit microcontrollers for

PCA84C122; 222; 422; 622; 822

remote control transmitters

6.2 Pin description
Table 1 Pin description for PCA84CX22AP, PCA84CX22AT, PCA84CX22BP, PCA84CX22BT and PCA84CX22CT

PIN

SYMBOL

P00 to P07 3, 2, 23, 22,

P10 to P17 19, 18, 17, 16,

P20 to P23 − 14, 15, 1, 28 −−standard I/O Port lines, generally

INT4538test T0 and external interrupt input

T0/
T15649test T1 input
RESET 67510active HIGH reset;

SDIP24/SO24

(see Fig.3)

10, 11, 14, 15

1, 22, 12, 13

SO28

(see Fig.4)

4, 3, 26, 25,
11, 12, 17, 18

22, 21, 20,19,
2, 27, 13, 16

SO20

(see Fig.5)

2, 1, 20, 19, 9,
10, 11, 12

16, 15, 14, 13 1, 20,19, 18 standard I/O Port lines, generally

DIP20

(see Fig.6)

7, 6, 5, 4, 14,
15, 16, 17

standard I/O Port lines, generally
used for keypad scanning

used for keypad sensing

used for visible LED’s

normally connected to V
For further information see
PCF84CXXXA description in

“Data Handbook IC14”

XTAL1 9 10 8 13 crystal or ceramic resonator
XTAL289712
OUT 21 24 18 3 pulse train output pin, capable of

sinking 27 mA

V

DD

V

SS

78611power supply
20 23 17 2 ground

DESCRIPTION

.

SS

.

7 POWER-ON-RESET STATUS AND PORT OPTIONS

• All Port lines are standard I/O (option 1).

• RESET (Power-on-reset) level of 1.3 V.

After Power-on-reset, Port 0 is reset to LOW; Port 1, Port 2 and

1995 May 01 7

OUT are reset to HIGH.

Philips Semiconductors Product specification

8-bit microcontrollers for
remote control transmitters

8 HARDWARE MODULATOR

The Hardware Modulator is the main derivative part in the
PCA84C122. Figure 7 shows the internal architecture.

The Hardware Modulator generates a pulse train whereby
the ON-time of a pulse and the OFF-time between pulses
can be programmed in a number of clock cycles
(period = 1/f

); see Figs 8 and 7.

osc

internal bus (IB0 – 7)

ON-TIME

REGISTER

(8)

OFF-TIME

REGISTER

(8)

PCA84C122; 222; 422; 622; 822

The number of pulses of the train is also programmable.
The time between pulse bursts is determined by software,
possibly using the standard 8-bit Timer/Counter.

8.1 Interface between the 84CXXX core and
derivative logic

There are three (derivative) registers and one (derivative)
counter that must be loaded from the core.

CONTROL

REGISTER

(5)

f

osc

control

OUT

start

ON-time

PULSE TIMER

(8)

CONTROL LOGIC

Fig.7 Hardware Modulator.

OFF-time

end

interrupt

pulse #1 pulse #2 pulse #3

PULSE COUNTER

HIGH

(2)

elapse time by software

PULSE COUNTER

LOW

(8)

OUT

MCD255 - 1

MCD254

OFF-time = 4 (off-time register = 2)ON-time = 2 (on-time register = 0) number of pulses = 3

Fig.8 Example pulse train output of OUT pin.

1995 May 01 8

Philips Semiconductors Product specification

8-bit microcontrollers for

PCA84C122; 222; 422; 622; 822

remote control transmitters

8.1.1 ON-TIME REGISTER (ADDRESS: 00H)
This 8-bit register is loaded by software; the decimal value

of its contents + 2, determine the number of oscillator
cycles that the

The active period (ON-time) of

8.1.2 OFF-

OUT pin is active.

contents 2+()

=

OUT

TIME REGISTER (ADDRESS: 01H)

-------------------------------------- ­f

osc

This 8-bit register is loaded by software; the decimal value
of its contents + 2, determine the number of oscillator
cycles that the

The inactive period (OFF-time) of

OUT pin is inactive.

OUT

contents 2+()

=

-------------------------------------- ­f

osc

Table 2 Control Register (CR)

76543210

−−−RWDT Rint PWM LgP HF

8.1.3 P

ULSE COUNTER

The Pulse Counter, is a 10-bit register consisting of:

• Pulse Counter Low (8-bit); address 02H.

• Pulse Counter High (2-bit); address 04H.

The Pulse Counter is loaded by software with the number
of pulses required in a pulse burst; loading ‘0’ is not
allowed.

8.1.4 C

ONTROL REGISTER (ADDRESS 03H)

The Control Register contains the bits that control various
possibilities for the output pulses, plus the reset of the
interrupt flip-flop and the Watchdog timer.

Table 3 Description of the CR bits

BIT SYMBOL DESCRIPTION

7to5 − Reserved.

4 RWDT Reload Watchdog Timer: This is not an actual flip-flop in the Control Register. If a logic 1 is

written to this bit position the Watchdog Timer is reloaded (reset to 0); this bit is Write only.

3 Rint Reset Interrupt: This is not an actual flip-flop in the Control Register. If a logic 1 is written to this

bit position the interrupt flip-flop is reset; this bit is Write only.

2 PWM Pulse Width Modulation: Is the standard term for a quasi analog signal. It is a square wave

signal of which the duty cycle may be varied. When integrated a real analog signal may be
obtained. When PWM = 1; the Pulse Counter Register is ignored and a continuous pulse train is
generated (see Fig.9); this bit is Read or Write.

1 LgP Long Pulse: When LgP = 1; the OFF-time Register is ignored and a single pulse of length

ON-time()number of pulses()×=

frequency

1

⁄4× f

(see Fig.10); this bit is Read or Write.

osc

is generated. If HF = 1, this pulse is modulated with a

0HF High Frequency: When HF = 1 the ON-time part of the generated pulse is modulated with a

frequency

1

⁄4× f

(see Fig.11); this bit is Read or Write.

osc

8.2 Instructions for data transfer between the 84CXXX core and derivative logic
INSTRUCTION DESCRIPTION

MOV Dx,A Move contents of the accumulator to the derivative register.
MOV A,Dx Move contents of derivative register to the accumulator.
ANL Dx,A AND derivative register contents with contents of accumulator. Result is stored in derivative register.
ORL Dx,A OR derivative register contents with contents of accumulator. Result is stored in derivative register.

1995 May 01 9

Philips Semiconductors Product specification

8-bit microcontrollers for
remote control transmitters

HF = 0 LgP = 0 PWM = 1 OFF-time = 5ON-time = 3
number of pulses = don' t care

PCA84C122; 222; 422; 622; 822

MCD258

Fig.9 Analog output (PWM).

interrupt

HF = 1 LgP = 1 PWM = 0 OFF-time = don' t careON-time = 12
number of pulses = 5

Fig.10 Long Pulse (modulated).

interrupt

HF = 1 LgP = 0 PWM = 0 OFF-time = 12ON-time = 12
number of pulses = 3

software time

MCD257 - 1

software time

MCD256 - 1

Fig.11 Modulated by1⁄4× f

1995 May 01 10

osc

.

Philips Semiconductors Product specification

8-bit microcontrollers for
remote control transmitters

8.3 Operation of the Hardware Modulator

First the ON-time and OFF-time registers are loaded. The
number of pulses to be generated is stored in the Pulse
Counter. The Hardware Modulator starts as soon as the
Pulse Counter is loaded. First the signal
and the ON-time value is stored in the Pulse Timer. Then
the Pulse Timer is counted down with pulses of 1/f

When the Pulse Timer reaches zero the
becomes inactive and the value held in the Pulse Counter
is decreased by ‘1’. If the Pulse Counter is not yet zero, the
OFF-time is stored in the Pulse Timer and is counted down
again. When it reaches zero now, signal
again, ON-time is loaded and the counter starts counting
down etc. On the Pulse Counter reaching zero, an interrupt
(Special Interrupt, SI) is sent to the CPU, indicating that the
Hardware Modulator is ready.

The delay between two pulse bursts is determined by
software. When a new burst must be generated with the
same ON-time and OFF-time values, only the Pulse
Counter is loaded with the required number of pulses and
the Hardware Modulator will start automatically. The
interrupt signal is reset when the Pulse Counter is loaded
or can be reset directly by writing a logic 1 to bit Rint of the
Control Register.

9 INTERRUPTS

OUT is activated

.

osc

OUT signal

OUT is activated

PCA84C122; 222; 422; 622; 822

If the external interrupt is disabled, program execution
continues with the instruction following the STOP
instruction.

The wake-up function is activated when any of the
sense lines (Port 1 pins) are pulled LOW.

9.2.2 T0/
T0/INT must be connected to VDD when not in use,

because no internal pull-up or pull-down is present
(floating input).

Because this pin is ‘ANDed’ with Port 1 inputs, the result of
‘JTO’ and ‘JNTO’ instructions and the interrupt depends on
the AND of all Port 1 and T0/

T0/INT can serve as an extra sense line, when a pull-up
resistor is connected, however, multiple keys will not be
detected.

10 OUTPUT DRIVER

The output of the Hardware Modulator is amplified and
able to sink a current of 27 mA when the
active. Therefore, only one external (PNP) transistor is
required to drive the IR-LED.

LOW level output sink current, minimum 27 mA at
VDD= 2.0 V, V

INT PIN

OUT

INT inputs.

OUT signal is

< VDD− 1.0 V.

There are three different interrupt sources with different
vectors within the PCA84C122, these are:

• External keypad wake-up and T0/

INT pin;

vector address: 03H

• Hardware modulator (SI); vector address: 05H

• Internal Timer/counter (TI); vector address: 07H.

9.1 Internal timer/counter

The internal timer/counter is the same as in the other
members of the PCF84CXXX family. Instructions
‘EN TCNTI’ and ‘DIS TCNTI’ are to enable/disable
the interrupt.

9.2 External keypad wake-up and T0/

9.2.1 K

EYPAD WAKE-UP

INT pin

The keypad wake-up function generates an interrupt
signal to the CPU. This signal is used to terminate the Stop
mode and thus allows program execution to continue.
If the external interrupt is enabled the microcontroller
executes the instruction immediately following the STOP
instruction, before executing the interrupt routine.

11 WATCHDOG TIMER (WDT)

The Watchdog timer consists of a 17 stage counter with a
clock of

⁄30× f

. A logic 1 written to RWDT bit (Control

osc

1

Register) clears the WDT to zero.
After a Power-on-reset, the WDT is cleared to zero; the

content of the WDT is then incremented by ‘1’ every
30 clock cycles.

If the WDT is not reset to zero before it overflows, a
RESET signal is generated and the device is reset, thus
preventing a lock up or malfunction. The software must
clear the WDT at least 1/f
generates the RESET signal; i.e. at f

× 30 × 216 seconds before it

osc

= 1 MHz, this is

osc

1.92 s.
In the Idle mode the oscillator is still running and therefore

the WDT remains active. In the Stop mode, the WDT is
fully stopped and the value of the counter is kept.

1995 May 01 11

Philips Semiconductors Product specification

8-bit microcontrollers for

PCA84C122; 222; 422; 622; 822

remote control transmitters

12 LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL PARAMETER MIN. MAX. UNIT

V

DD

V

I

I

source(max)

I

sink(max)

I

OUT

I

rev

P

tot

T

stg

T

amb

13 DC CHARACTERISTICS

V

= 4.5 V to 5.5 V; VSS=0V;T

DD

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

supply voltage −0.5 +7.0 V
all input voltages −0.5 VDD+ 0.5 V
maximum source current (all Port lines) −−5mA
maximum sink current (all Port lines) − 5mA
output current 27 − mA
maximum reverse current −−500 mA
total power dissipation − 500 mW
storage temperature −55 +125 °C
operating ambient temperature −20 +50 °C

= −20 to +50 °C; all voltages with respect to VSS; unless otherwise specified.

amb

Supply

V

DD

I

DD

I

DD(ID)

I

DD(ST)

Inputs (RESET, T0/

V

IL

V

IH

I

Ll

supply voltage 2.0 3.0 5.5 V
operating supply current VDD=3V; f

V

=5V; f

DD

supply current Idle mode VDD=3V; f

V

=5V; f

DD

supply current Stop mode VDD=5V; f

= 3 MHz − 0.4 0.9 mA

xtal

= 3 MHz − 0.9 1.8 mA

xtal

= 3 MHz − 0.20 0.40 mA

xtal

= 3 MHz − 0.25 0.50 mA

xtal

= 3 MHz − 1.20 10 µA

xtal

INT, T1, Port 0: P00 to P07, Port 1: P10 to P17, Port 2: P20 to P23)

LOW level input voltage 0 − 0.3VDDV
HIGH level input voltage 0.7VDD− V
input leakage current VSS< VI< V

DD

Outputs (Port 0: P00 to P07, Port 1: P10 to P17, Port 2: P20 to P23)

I

I

OL

OH

LOW level output sink current VDD=5V; VO= 0.4 V 1.6 12.0 − mA

V

= = 5 V; VO= 0.4 V; P20 − P23 10 −− mA

DD

HIGH level pull-up output source
current

VDD=5V; VO= 0.7V
V

=5V; VO=V

DD

SS

DD

PULSE OUTPUT (OUT)
I

I

OL
OH

LOW level output sink current VDD=2V; VO= 1.0 V 27 −− mA
HIGH level output source current VDD=2V; VO= 0.7V

DD

DD

V

− 0.20 10 µA

−40 −100 −µA

−140 −140 −400 µA

−1.6 −− mA

1995 May 01 12

Philips Semiconductors Product specification

8-bit microcontrollers for

PCA84C122; 222; 422; 622; 822

remote control transmitters

14 AC CHARACTERISTICS

V

= 2.0 V to 5.5 V; VSS=0V;T

DD

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Oscillator

f

g
g
g
R

xtal

mL
mM
mH

FB

operating crystal frequency VDD= 2.5 V 0.455 − 6.0 MHz

Low transconductance 0.3 0.7 1.4 mS
Medium transconductance 0.9 1.6 3.2 mS
High transconductance 3.0 4.5 9.0 mS
feedback resistor 0.3 1.0 3.0 MΩ

= −20 to +50 °C; all voltages with respect to VSS; unless otherwise specified.

amb

= 2.0 V 0.455 − 5.0 MHz

V

DD

1995 May 01 13

Philips Semiconductors Product specification

8-bit microcontrollers for
remote control transmitters

15 APPLICATION INFORMATION

P00
P01
P02
P03
P04
P05
P06
P07

P10
P11
P12
P13

PCA84C122; 222; 422; 622; 822

100 Ω

84C122A

V

DD

XTAL1

XTAL2

T0 / INT

OUT

T1

27 mA

3.0 V

P14
P15
P16
P17

Fig.12 PCA84C122A Remote control transmitter application.

Figure 12 shows the main application of the PCA84C122
as a remote control transmitter. Each key of the transmitter
keypad represents a specific command. The keys are in an
orderly matrix with each key connected between an I/O
line of Port 0 and an I/O line of Port 1.

The lines of Port 0 are designated ‘scan’ (output) lines, and
the lines of Port 1 are ‘sense’ (input) lines.

By making each scan line a logic 0 in turn, and each time
looking at the sense lines, the depressed key is detected.
The corresponding command code is determined by using
a software look-up table. This code together with the
system address is sent according to a coding scheme or
protocol (e.g. RC-5). The pulses that are generated are
available at the OUT pin. This pin drives the output
transistor, which provides the current for the IR-LED.

T0/INT is not used and therefore connected to VDD. T1 is
used for system or option selection, therefore a jumper can
be connected to VDD or ground.

RESET

V

SS

MCD252

When more options must be selected, this can be done in
different ways as illustrated in the following two examples:

1. When the number of keys is sufficiently low a scan line
can be spared. This scan line may be used to connect
a jumper wire to one of the sense lines. Normally the
scan line should be logic 1. When this line is set to
logic 0 the option setting can be read from the sense
lines.

2. By connecting diodes between one sense line and a
number of scan lines (see Fig.12). If necessary these
diodes can be placed parallel to the keys. When the
sense line is set to logic 0 (acts as scan line), the
option setting can be read from the scan lines (which
act as sense lines and should be set to logic 1
beforehand).

For the oscillator a crystal or ceramic resonator may be
used. A resistor in series with the supply, limits the reverse
current through the IC in the event of the supply voltage
being reversed (i.e. wrong insertion of batteries).

1995 May 01 14

Philips Semiconductors Product specification

8-bit microcontrollers for
remote control transmitters

16 PACKAGE OUTLINES

SDIP24: plastic shrink dual in-line package; 24 leads (400 mil)

D

seating plane

L

Z

24

e

b

b

13

PCA84C122; 222; 422; 622; 822

M

E

A

2

A

A

1

w M

1

c

(e )

M

1

H

SOT234-1

pin 1 index

1

0 5 10 mm

scale

DIMENSIONS (mm are the original dimensions)

A

A

A

UNIT b

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

mm

OUTLINE
VERSION

SOT234-1

max.

4.7 0.51 3.8

12

min.

max.

IEC JEDEC EIAJ

1.3

0.8

b

1

0.53

0.40

REFERENCES

cEe M

0.32

0.23

(1) (1)

D

22.3

21.4

9.1

8.7

E

12

(1)

Z

L

3.2

2.8

EUROPEAN

PROJECTION

M

10.7

10.2

E

12.2

10.5

e

1

w

H

0.181.778 10.16

ISSUE DATE

92-11-17
95-02-04

max.

1.6

1995 May 01 15

Philips Semiconductors Product specification

8-bit microcontrollers for

PCA84C122; 222; 422; 622; 822

remote control transmitters

SO24: plastic small outline package; 24 leads; body width 7.5 mm

D

c

y

Z

24

13

SOT137-1

E

H

E

A

X

v M

A

pin 1 index

1

e

0 5 10 mm

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

mm

A

max.

2.65

0.10

A1A2A

0.30

2.45

0.10

2.25

0.012

0.096

0.004

0.089

0.25

0.01

b

3

p

0.49

0.32

0.36

0.23

0.019

0.013

0.014

0.009

UNIT

inches

Note

1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.

(1)E(1) (1)

cD

15.6

15.2

0.61

0.60

12

w M

b

p

scale

eHELLpQ

7.6

1.27

7.4

0.30

0.050

0.29

10.65

10.00

0.419

0.394

A

1.4

0.055

Q

2

A

1

detail X

1.1

1.1

0.4

0.043

0.016

1.0

0.043

0.039

0.25

0.01

L

p

L

(A )

0.25 0.1

0.01

A

3

θ

ywv θ

Z

0.9

0.4

0.035

0.004

0.016

o

8

o

0

OUTLINE

VERSION

SOT137-1

IEC JEDEC EIAJ

075E05 MS-013AD

REFERENCES

1995 May 01 16

EUROPEAN

PROJECTION

ISSUE DATE

95-01-24
97-05-22

Philips Semiconductors Product specification

8-bit microcontrollers for
remote control transmitters

DIP20: plastic dual in-line package; 20 leads (300 mil)

D

seating plane

L

Z

20

e

b

PCA84C122; 222; 422; 622; 822

SOT146-1

M

E

A

2

A

A

1

w M

b

1

11

c

(e )

1

M

H

pin 1 index

1

0 5 10 mm

scale

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

A

A

A

UNIT

inches

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

max.

mm

OUTLINE
VERSION

SOT146-1

1 2

min.

max.

1.73

1.30

0.068

0.051

IEC JEDEC EIAJ

b

b

1

0.53

0.38

0.021

0.015

0.014

0.009

REFERENCES

cD E e M

0.36

0.23

(1) (1)

26.92

26.54

1.060

1.045

SC603

6.40

6.22

0.25

0.24

E

10

(1)

M

e

L

1

3.60

8.25

3.05

7.80

0.14

0.32

0.12

0.31

EUROPEAN

PROJECTION

H

E

10.0

0.2542.54 7.62

8.3

0.39

0.010.10 0.30

0.33

ISSUE DATE

92-11-17
95-05-24

Z

w

max.

2.04.2 0.51 3.2

0.0780.17 0.020 0.13

1995 May 01 17

Philips Semiconductors Product specification

8-bit microcontrollers for

PCA84C122; 222; 422; 622; 822

remote control transmitters

SO20: plastic small outline package; 20 leads; body width 7.5 mm

D

c

y

Z

20

11

SOT163-1

E

H

E

A

X

v M

A

pin 1 index

1

e

0 5 10 mm

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

mm

A

max.

2.65

0.10

A

0.30

0.10

0.012

0.004

1

A2A

2.45

2.25

0.096

0.089

0.25

0.01

b

0.49

0.36

p

cD

0.32

0.23

0.013

0.009

3

0.019

0.014

UNIT

inches

Note

1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.

10

w M

b

p

scale

(1)E(1) (1)

13.0

12.6

0.51

0.49

eHELLpQ

7.6

1.27

7.4

0.30

0.050

0.29

10.65

10.00

0.419

0.394

Q

A

2

A

1

1.4

0.055

1.1

0.4

0.043

0.016

detail X

1.1

1.0

0.043

0.039

(A )

L

p

L

0.25

0.01

A

3

θ

0.25 0.1

0.01

ywv θ

Z

0.9

0.4

8

0.004

0.035

0.016

0

o
o

OUTLINE

VERSION

SOT163-1

IEC JEDEC EIAJ

075E04 MS-013AC

REFERENCES

1995 May 01 18

EUROPEAN

PROJECTION

ISSUE DATE

95-01-24
97-05-22

Philips Semiconductors Product specification

8-bit microcontrollers for

PCA84C122; 222; 422; 622; 822

remote control transmitters

SO28: plastic small outline package; 28 leads; body width 7.5 mm

D

c

y

Z

28

15

SOT136-1

E

H

E

A

X

v M

A

pin 1 index

1

e

0 5 10 mm

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

mm

A

max.

2.65

0.10

A

1

0.30

0.10

0.012

0.004

A2A

2.45

2.25

0.096

0.089

0.25

0.01

b

3

p

0.49

0.32

0.36

0.23

0.019

0.013

0.014

0.009

UNIT

inches

Note

1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.

(1)E(1) (1)

cD

18.1

7.6

17.7

7.4

0.71

0.30

0.69

0.29

14

w M

b

p

scale

eHELLpQ

1.27

0.050

10.65

10.00

0.419

0.394

1.4

0.055

A

2

0.043

0.016

A

1.1

0.4

Q

A

3

θ

ywv θ

Z

0.9

0.4

0.035

0.004

0.016

o

8

o

0

L

p

L

0.25 0.1

0.01

(A )

1

detail X

1.1

0.25

1.0

0.043

0.01

0.039

OUTLINE
VERSION

SOT136-1

IEC JEDEC EIAJ

075E06 MS-013AE

REFERENCES

1995 May 01 19

EUROPEAN

PROJECTION

ISSUE DATE

95-01-24
97-05-22

Philips Semiconductors Product specification

8-bit microcontrollers for
remote control transmitters

17 SOLDERING

17.1 Plastic small outline packages

17.1.1 B
During placement and before soldering, the component

must be fixed with a droplet of adhesive. After curing the
adhesive, the component can be soldered. The adhesive
can be applied by screen printing, pin transfer or syringe
dispensing.

Maximum permissible solder temperature is 260 °C, and
maximum duration of package immersion in solder bath is
10 s, if allowed to cool to less than 150 °C within 6 s.
Typical dwell time is 4 s at 250 °C.

A modified wave soldering technique is recommended
using two solder waves (dual-wave), in which a turbulent
wave with high upward pressure is followed by a smooth
laminar wave. Using a mildly-activated flux eliminates the
need for removal of corrosive residues in most
applications.

17.1.2 B
Reflow soldering requires the solder paste (a suspension

of fine solder particles, flux and binding agent) to be
applied to the substrate by screen printing, stencilling or
pressure-syringe dispensing before device placement.

Several techniques exist for reflowing; for example,
thermal conduction by heated belt, infrared, and
vapour-phase reflow. Dwell times vary between 50 and
300 s according to method. Typical reflow temperatures
range from 215 to 250 °C.

Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 min at 45 °C.

YWAVE

Y SOLDER PASTE REFLOW

PCA84C122; 222; 422; 622; 822

17.1.3 R

Fix the component by first soldering two, diagonally
opposite, end pins. Apply the heating tool to the flat part of
the pin only. Contact time must be limited to 10 s at up to
300 °C. When using proper tools, all other pins can be
soldered in one operation within 2 to 5 s at between 270
and 320 °C. (Pulse-heated soldering is not recommended
for SO packages.)

For pulse-heated solder tool (resistance) soldering of VSO
packages, solder is applied to the substrate by dipping or
by an extra thick tin/lead plating before package
placement.

17.2 Plastic dual in-line packages

17.2.1 B

The maximum permissible temperature of the solder is
260 °C; this temperature must not be in contact with the
joint for more than 5 s. The total contact time of successive
solder waves must not exceed 5 s.

The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified storage maximum. If the printed-circuit board has
been pre-heated, forced cooling may be necessary
immediately after soldering to keep the temperature within
the permissible limit.

17.2.2 R

Apply a low voltage soldering iron below the seating plane
(or not more than 2 mm above it). If its temperature is
below 300 °C, it must not be in contact for more than 10 s;
if between 300 and 400 °C, for not more than 5 s.

EPAIRING SOLDERED JOINTS (BY HAND-HELD

SOLDERING IRON OR PULSE

Y DIP OR WAVE

EPAIRING SOLDERED JOINTS

-HEATED SOLDER TOOL)

1995 May 01 20

Philips Semiconductors Product specification

8-bit microcontrollers for

PCA84C122; 222; 422; 622; 822

remote control transmitters

18 DEFINITIONS

Data sheet status

Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.

Limiting values

Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information

Where application information is given, it is advisory and does not form part of the specification.

19 LIFE SUPPORT APPLICATIONS

These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.

1995 May 01 21

Philips Semiconductors Product specification

8-bit microcontrollers for
remote control transmitters

PCA84C122; 222; 422; 622; 822

NOTES

1995 May 01 22

Philips Semiconductors Product specification

8-bit microcontrollers for
remote control transmitters

PCA84C122; 222; 422; 622; 822

NOTES

1995 May 01 23

Philips Semiconductors – a worldwide company

Argentina: IEROD, Av. Juramento 1992 - 14.b, (1428)

BUENOS AIRES, Tel. [phone], Fax. [phone]

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Tel. [phone], Fax. [phone]

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Tel. [phone], Fax. [phone]

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Tel. [phone], Fax. [phone]

th

floor, Suite 51,

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Exchange Bldg. ST-2/A, Block 9, KDA Scheme 5, Clifton,
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Fax. [phone]

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Tel. [phone], Fax. [phone]

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276 Bath Road, Hayes, MIDDLESEX UB3 5BX,
Tel. [phone], Fax. [phone]

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Tel. [phone], Fax. [phone]

Internet: http://www.semiconductors.philips.com/ps/
For all other countries apply to: Philips Semiconductors,

International Marketing and Sales, Building BE-p,
P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands,
Telex 35000 phtcnl, Fax. [phone]

SCD39 © Philips Electronics N.V. 1995

All rights are reserved. Reproduction in whole or in part is prohibited without the
prior written consent of the copyright owner.

The information presented in this document does not form part of any quotation
or contract, is believed to be accurate and reliable and may be changed without
notice. No liability will be accepted by the publisher for any consequence of its
use. Publication thereof does not convey nor imply any license under patent- or
other industrial or intellectual property rights.

Printed in The Netherlands

453041/1500/03/pp24 Date of release: 1995 May 01
Document order number: 9397 750 00102

Philips Semiconductors