參數(shù)資料
型號： UPD750104CUA
廠商： NEC Corp.
英文描述： 4 BIT SINGLE-CHIP MICROCONTROLLER
中文描述： 4位單片機(jī)
文件頁數(shù)： 13/80頁
文件大小： 525K
代理商： UPD750104CUA
13
μ
PD750104, 750106, 750108, 750104(A), 750106(A), 750108(A)
Input state
: To be connected to V
SS
or V
DD
through a separate resistor
Output state : To be left open
Input state
: To be connected to V
SS
or V
DD
through a separate resistor
Output state : To be left open
Input state
Output state : To be connected to V
SS
(Do not connect to a pull-up
resistor specified with a mask
option.)
: To be connected to V
SS
3.4 Connection of Unused Pins
Table 3-1. Connection of Unused Pins
Note
When the subsystem clock is not used, set SOS.0 to 1 (not to use the built-
in feedback resistor).
Pin name
Recommended connection
P00/INT4
To be connected to V
SS
or V
DD
P01/SCK
P02/SO/SB0
P03/SI/SB1
To be connected to V
SS
P10/INT0 - P12/INT2
To be connected to V
SS
or V
DD
P13/TI0
P20/PTO0
P21/PTO1
P22/PCL
P23/BUZ
P30 - P33
P40 - P43
P50 - P53
P60/KR0 - P63/KR3
P70/KR4 - P73/KR7
P80, P81
XT1
Note
To be connected to V
SS
or V
DD
XT2
Note
To be left open
IC
To be connected directly to V
DD
To be connected to V
SS
or V
DD
through a
separate resistor
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