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PD17P246 Folha de dados(PDF) 10 Page - Renesas Technology Corp

Nome de Peças PD17P246
Descrição Electrónicos  PD17P246_15 FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROLLER
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Fabricante Electrônico  RENESAS [Renesas Technology Corp]
Página de início  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

PD17P246 Folha de dados(HTML) 10 Page - Renesas Technology Corp

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µPD17P246
8
Data Sheet U15215EJ1V0DS
2.1 Normal Operating Mode (2/3)
Pin No.
Symbol
Function
Output Form
After Reset
4
P0E0
These pins constitute a 4-bit I/O port that can be set in the input or
When key
CMOS input
5
P0E1
output mode in 1-bit units.
matrix is
(when key
6
P0E2
If this port is set in the input mode when a key matrix is used, it
used: N-ch
matrix is not
7
P0E3
functions as a CMOS input port with a pull-up resistor and can be
open-drain,
used and no
used to input key return signals. If one of the pins of this port
when key
resistor
goes low, the standby mode is released.
matrix is not
connected)
If this port is set in the output mode when a key matrix is used, it
used: CMOS
functions as an N-ch open-drain output port and can be used to
push-pull
output key matrix signals.
If this port is set in the input mode when a key matrix is not used,
it functions as a CMOS input port to/from which a resistor can be
connected or disconnected in 1-bit units. If this port is set in the
output mode when a key matrix is not used, it functions as a high-
current CMOS output port.
8
REM
Outputs transfer signal for infrared remote controller.
CMOS
Low-level
Active-high output.
push-pull
output
9VDD
Power supply
––
10
XOUT
Connects ceramic resonator for system clock oscillation
(Oscillation
11
XIN
stops)
12
GND
Ground
––
13
RESET
Reset input
Turns ON pull-down resistor if POC or watchdog timer overflows
Input
and if the stack pointer overflows or underflows, and resets the
system. Usually, the pull-down resistor is ON.


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