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UPD78P014 Datasheet(PDF) 12 Page - NEC

Part # UPD78P014
Description  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  62 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD78P014 Datasheet(HTML) 12 Page - NEC

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12
µPD78P014
2.
PIN FUNCTIONS
2.1
Normal Operating Mode Pins
(1)
Port pins (1/2)
Alternate
Function
Function
Pin Name
Port 1
8-bit input/output port.
Input/output can be specified in 1-bit unit.
When used as an input port, pull-up resistor can be used by
software.Note 2
Input only
Input only
Input
After Reset
Input
Input
Notes 1. When P04/XT1 pins are used as the input ports, set processor clock control register bit 6 (FRC) to 1. (Do
not use the on-chip feedback resistor of the subsystem clock oscillation circuit.)
2. When P10/ANI0 to P17/ANI7 pins are used as the analog inputs for A/D converter, the pull-up resistor is
automatically disabled.
P00
P01
P02
P03
P04Note 1
P10 to P17
P20
P21
P22
P23
P24
P25
P26
P27
P30
P31
P32
P33
P34
P35
P36
P37
P40 to P47
I/O
INTP0/TI0
INTP1
INTP2
INTP3
XT1
ANI0 to
ANI7
SI1
SO1
SCK1
STB
BUSY
SI0/SB0
SO0/SB1
SCK0
TO0
TO1
TO2
TI1
TI2
PCL
BUZ
–
AD0 to AD7
Input/
output
Input/output can be specified in 1-bit unit.
When used as an input port, pull-up resistor can
be used by software.
Port 0
5-bit I/O port
Input
Input
Input
Input/
output
Input/
output
Port 2
8-bit input/output port.
Input/output can be specified in 1-bit unit.
When used as an input port, pull-up resistor can be used by software.
Input
Input
Port 3
8-bit input/output port.
Input/output can be specified in 1-bit unit.
When used as an input port, pull-up resistor can be used by software.
Input/
output
Port 4
8-bit input/output port.
Input/output can be specified in 8-bit unit.
When used as an input port, pull-up resistor can be used by software.
(Test input flag (KRIF) is set to 1 by falling edge detection.)
Input/
output
Input



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