参数资料
型号: UPD750066CU(A)-XXX
元件分类: 微控制器/微处理器
英文描述: 4-BIT, MROM, MICROCONTROLLER, PDIP42
封装: 0.600 INCH, 1.778 MM PITCH, SHRINK, PLASTIC, DIP-42
文件页数: 7/83页
文件大小: 730K
代理商: UPD750066CU(A)-XXX
15
PD750064, 750066, 750068, 750064(A), 750066(A), 750068(A)
Data Sheet U10165EJ2V1DS
3.4 Recommended Connection of Unused Pins
Table 3-1. List of Recommended Connection of Unused Pins
Pin
Recommended Connection
P00/INT4
Connect to VSS or VDD.
P01/SCK
Independently connect to VSS or VDD via a resistor.
P02/SO/SB0
P03/SI/SB1
Connect to VSS.
P10/INT0, P11/INT1
Connect to VSS or VDD.
P12/TI1/INT2
P13/TI0
P20/PTO0
Input state:
Independently connect to VSS or VDD
P21/PTO1
via a resistor.
P22/PCL
Output state:
Leave open.
P23/BUZ
P30 to P33
P40 to P43
Connect to VSS (do not connect a pull-up resistor
P50 to P53
of mask option).
P60/KR0/AN4 to
Input state:
Independently connect to VSS or VDD
P63/KR3/AN7
via a resistor.
Output state:
Leave open.
P110/AN0 to P113/AN3
Connect directly to VSS or VDD.
XT1Note
Connect to VSS.
XT2Note
Leave open.
IC
Connect directly to VDD.
AVREF
Connect to VSS.
AVSS
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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