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參數(shù)資料
| 型號： | UPD753104GK |
| 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)： | 15/90頁 |
| 文件大?。?/td> | 547K |
| 代理商： | UPD753104GK |
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15
μ
PD753104, 753106, 753108
3.4 Recommended Connections for Unused Pins
Table 3-1. List of Recommended Connections for Unused Pins
Pin
Recommended Connection
P00/INT4
Connect to V
SS
or V
DD
P01/SCK
Connect to V
SS
or V
DD
via a resistor individually
P02/SO/SB0
P03/SI/SB1
Connect to V
SS
P10/INT0, P11/INT1
Connect to V
SS
or V
DD
P12/TI1/TI2/INT2
P13/TI0
P20/PTO0
Input state:
Connect to V
SS
or V
DD
via a resistor
P21/PTO1
individually
P22/PCL/PTO2
Output state: Leave open
P23/BUZ
P30/LCDCL
P31/SYNC
P32
P33
P50-P53
Input state:
Connect to V
SS
Output state: Connect to V
SS
(do not connect a
pull-up resistor of mask option)
P60/KR0-P63/KR3
Input state:
Connect to V
SS
or V
DD
via a resistor
individually
Output state: Leave open
S0-S15
Leave open
COM0-COM3
S16/P93-S19/P90
Input state:
Connect to V
SS
or V
DD
via a resistor
individually
S20/P83-S23/P80
Output state: Leave open
V
LC0
-V
LC2
Connect to V
SS
BIAS
Only if all of V
LC0
to V
LC2
are unused, connect to V
SS
.
In other cases, leave open.
XT1
Note
Connect to V
SS
or
V
DD
XT2
Note
Leave open
IC
Connect
directly to V
DD
Note
When the subsystem clock is not used, specify SOS.0 = 1 (so as not
to use the on-chip feedback resistor).
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