參數(shù)資料
型號(hào): UPD75048GC
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述: 4位單片機(jī)
文件頁數(shù): 9/68頁
文件大?。?/td> 538K
代理商: UPD75048GC
9
μ
PD75048
3. PIN FUNCTIONS
3.1 PORT PINS
Input/
Output
Circuit
TYPE*
1
P00
P01
P02
P03
P10
P11
P12
P13
P20
P21
P22
P23
P30*
2
P31*
2
P32*
2
P33*
2
P40-43*
2
P50-53*
2
Pin Name
Input/Output
Function
8-Bit I/O
When Reset
Also Served
As
Input/
Output
Input/
Output
Input/
Output
Input/
Output
Input
Input/
Output
Input/
Output
Input/
Output
Input/
Output
INT4
SCK
SO/SB0
SO/SB1
INT0
INT1
INT2
TI0
PTO0
PPO
PCL
BUZ
4-bit input/output port(PORT0)
Pull up resistros can be specified in 3-bit
units for the P01 to P03 pins by software.
With noise elimination function
4-bit input port(PORT1)
Internal pull-up resistors can be
specified in 4-bit units by software.
4-bit input/output port(PORT2)
Internal pull-up resistors can be
specified in 4-bit units by software.
Programmable 4-bit input/output port
(PORT3)
This port can be specified for input/
output in bit units.
Internal pull-up resistors can be
specified in 4-bit units by software.
N-ch open-drain 4-bit input/output port
(PORT4)
Internal pull-up resistors can be
specified in 4-bit units (by mask option).
Resistive voltage is 10V in the open-
drain mode.
N-ch open-drain 4-bit input/output port
(PORT5)
Internal pull-up resistors can be
specified in bit units (by mask option).
Resistive voltage is 10V in the open-
drain mode.
Input
Input
Input
Input
B
F -A
F -B
M -C
B -C
E -B
E -B
M
M
X
X
X
X
*1: Circles indicate Schmitt trigger inputs.
2: Can directly drive LED.
High level
(with internal
pull-up
register) or
high imped-
ance
High level
(with internal
pull-up
register) or
high imped-
ance
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