PCA84C922AP PHILIPS [NXP Semiconductors], PCA84C922AP Datasheet - Page 20

• Manufacturer Part Number: PCA84C922AP
• Description: Microcontrollers for universal infrared remote transmitter applications
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
10 PORT OPTIONS
Ports can be configured using one of three mask options.
The three I/O mask options are specified below.
Option 1 Standard I/O with switched pull-up current
Option 2 I/O with open-drain output; this is shown in
Option 3 Push-pull output; this is shown in Fig.18.
The state of the ports and the LOUT pin after a
Power-on-reset can also be selected using mask options.
All mask options are given in Table 8.
Table 8 Mask options
1997 Oct 22
handbook, full pagewidth
P00 to P07
P10 to P13
P14 to P17
P20 to P23
DP50 to DP57
DP60 to DP67
LOUT
PORT LINES/PIN
Microcontrollers for universal infrared
remote transmitter applications
source; this is shown in Fig.16.
Fig.17.
write pulse
OUTL/ORL/ANL/MOV
data bus
S
X
X
X
Fig.16 Standard I/O with switched pull-up current source (Option 1).
R
ORL/ANL/MOV
1 or 3; notes 1 and 2
1; note 3
1; note 3
1
1 or 3; notes 1, 2 and 4
2 or 3
D
Master
MQ
OPTION
D
Slave
SQ
SQ
IN/MOV
20
Notes to Table 8
1. If diodes are used for system selection the scan lines
2. Scan lines should have the option ‘1R’.
3. Sense lines should have the option ‘1S’.
4. Only the PCA84C923D has external Derivative Port 6
(Port 0 and Derivative Port 6) cannot take Option 3.
terminals and therefore this option is only valid for this
device. The other members of the range have the state
of their internal Derivative Port 6 latch fixed at ‘1S’.
TR2
TR1
V SS
PCA84C922; PCA84C923
TR3
100 A typical (V = 0.7 V
MED186 - 1
I/O port
line
O
V
DD
Product specification
DD
)