PCA84C923AP Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
PCA84C923AP
Philips Electronics
PCA84C923AP Datasheet PDF : 36 Pages
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Philips Semiconductors
Microcontrollers for universal infrared
remote transmitter applications
Product specification
PCA84C922; PCA84C923
Table 3 PCA84C922C (SO28) and PCA84C923C (SO28)
SYMBOL
PIN
DESCRIPTION
P00 to P07 4, 3, 26, 25, Standard I/O port lines, generally used for keypad scanning or for LSB address byte of
11, 12, 17, 18 code data.
P10 to P17 22, 21, 20, 19, Standard I/O port lines, generally used for keypad sensing, the wake-up function of
2, 27, 13, 16 P14 to P17 can be removed by mask option.
P20 to P23 14, 15, 1, 28 Standard I/O port lines with 10 mA sink capability.
T0/INT
5
Test pin T0 or external interrupt input.
T1
6
Test pin T1 or timer/counter input (T1).
RESET
7
Active HIGH reset pin; normally connected to VSS as Power-on-reset serves the same
function.
XTAL2
9
Crystal or ceramic resonator or LC oscillator connections.
XTAL1
10
LOUT
24
Pulse train output pin, capable of sinking 30 mA.
VDD
8
VSS
23
Power supply.
Ground.
Table 4 PCA84C922A (SO24/SDIP24) and PCA84C923A (SO24/SDIP24)
SYMBOL
PIN
DESCRIPTION
P00 to P07 3, 2, 23, 22, Standard I/O port lines, generally used for keypad scanning or for LSB address byte of
10, 11, 14, 15 code data.
P10 to P17 19,18, 17, 16, Standard I/O port lines, generally used for keypad sensing, the wake-up function of
1, 24,12,13 P14 to P17 can be removed by mask option.
T0/INT
4
Test pin T0 or external interrupt input.
T1
5
Test pin T1 or timer/counter input (T1).
RESET
6
Active HIGH reset pin; normally connected to VSS as Power-on-reset serves the same
function.
XTAL2
8
Crystal or ceramic resonator or LC oscillator connections.
XTAL1
9
LOUT
21
Pulse train output pin, capable of sinking 30 mA.
VDD
7
VSS
20
Power supply.
Ground.
1997 Oct 22
9
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