參數(shù)資料
型號: uPD750068CU
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 4位單晶片微控制器
文件頁數(shù): 15/82頁
文件大小: 460K
代理商: UPD750068CU
15
μ
PD750064, 750066, 750068, 750064(A), 750066(A), 750068(A)
Data Sheet U10165EJ2V0DS00
3.4 Recommended Connection of Unused Pins
Table 3-1. List of Recommended Connection of Unused Pins
Pin
Recommended Connection
P00/INT4
Connect to V
SS
or V
DD
.
P01/SCK
Independently connect to V
SS
or V
DD
via a resistor.
P02/SO/SB0
P03/SI/SB1
Connect to V
SS
.
P10/INT0, P11/INT1
Connect to V
SS
or V
DD
.
P12/TI1/INT2
P13/TI0
P20/PTO0
Input state:
Independently connect to V
SS
or V
DD
via a resistor.
Leave open.
P21/PTO1
P22/PCL
Output state:
P23/BUZ
P30 to P33
P40 to P43
Connect to V
SS
(do not connect a pull-up resistor
of mask option).
P50 to P53
P60/KR0/AN4 to
P63/KR3/AN7
Input state:
Independently connect to V
SS
or V
DD
via a resistor.
Leave open.
Output state:
P110/AN0 to P113/AN3
Connect directly to V
SS
or
V
DD
.
XT1
Note
Connect to V
SS
.
XT2
Note
Leave open.
IC
Connect directly to V
DD
.
AV
REF
Connect to V
SS
.
AV
SS
Note
When the subsystem clock is not used, set SOS.0 to 1 (so as not to
use the internal feedback resistor).
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