參數(shù)資料
型號: UPD753017
廠商: NEC Corp.
元件分類: 4位微控制器
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER
中文描述: 4位單片機的小型通用紅外遙控器
文件頁數(shù): 14/80頁
文件大?。?/td> 569K
代理商: UPD753017
14
μ
PD753012, 753016, 753017
3.4 Recommended Connection for Unused Pins
Table 3-1. List of Recommended Connection for 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 resistor.
P02/SO/SB0
P03/SI/SB1
Connected to V
SS
.
P10/INT0, P11/INT1
Connect to V
SS
or V
DD
.
P12/TI1/TI2/INT2
P13/TI0
P20/PTO0
Input state
: Individually connect to V
SS
or V
DD
via
P21/PTO1
resistor.
P22/PTO2/PCL
Output state: Leave unconnected.
P23/BUZ
P30/LCDCL
P31/SYNC
P32
P33
P40-P43
Input state
: Connect to V
SS
.
P50-P53
Output state: Connected to V
SS
. (Do not connect the
pull-up resistor by mask option).
P60/KR0-P63/KR3
Input state
:
Individually connected to V
SS
or V
DD
via
resistor
.
Output state: Leave unconnected.
P70/KR4-P73/KR7
S0-S23
Leave unconnected.
S24/BP0-S31/BP7
COM0-COM3
V
LC0
-V
LC2
Connect to V
SS
.
BIAS
Only if all of V
LC0
-V
LC2
are unused, connect to V
SS
.
In other cases, leave unconnected.
XT1
Connect to V
SS
.
XT2
Leave unconnected.
IC
Directly connect to V
DD
.
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