參數(shù)資料
型號: 4571
廠商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
中文描述: 單芯片4位微機(jī)的CMOS
文件頁數(shù): 94/126頁
文件大?。?/td> 1627K
代理商: 4571
Rev.1.02
May 25, 2007
Page 7 of 124
REJ03B0179-0102
4571 Group
CONNECTIONS OF UNUSED PINS
Note 1.If a port input instruction (SZD, IAP0, IAP1, IAP2, IAP3) is executed when the output latch is 1, the supply voltage may be
increased in the instruction execution cycle by the through current.
Note 2.Do not select the CNTR0 input as the timer 1 count source. (W11 W10
≠11)
Note 3.Set the input of INT0 pin or INT1 pin to be disabled. (I13=0, I23=0)
Note 4.Set the output of the CNTR1 pin to be invalid. (W33=0)
(Note when connecting to VSS or VDD)
Connect the unused pins to VSS using the thickest wire at the shortest distance against noise.
Table 7
Port function
Pin
Connection
Usage condition
Output structure
Pull-up
transistor
Key-on wakeup
Value of
output latch
Others
D0
D3
P30, P31
Open.
N-channel open-drain
0/1
(Note 1)
CMOS
0/1
Connect to VSS.
N-channel open-drain
0/1
CMOS
0
Connect to VDD.
N-channel open-drain
1
CMOS
1
D4/CNTR0
Open.
N-channel open-drain
0/1
(Notes 1, 2)
Connect to VSS.
N-channel open-drain
0/1
(Note 2)
Connect to VDD.
N-channel open-drain
1
(Note 2)
P00
P03,
P10
P13
Open.
N-channel open-drain
OFF
Invalid
0/1
(Note 1)
ON
Invalid
1
Connect to VSS.
N-channel open-drain
OFF
Invalid
0/1
Connect to VDD.
N-channel open-drain
ON/OFF
Valid/Invalid
1
P20/INT0
P21/INT1
Open.
N-channel open-drain
OFF
Invalid
0/1
(Notes 1, 3)
ON
Invalid
1
(Note 3)
Connect to VSS.
N-channel open-drain
OFF
Invalid
0/1
(Note 3)
Connect to VDD.
N-channel open-drain
ON/OFF
Valid/Invalid
1
(Note 3)
C/CNTR1
Open.
CMOS
0/1
Connect to VSS.CMOS
0
(Note 4)
K
Connect to VSS.
Invalid
Connect to VDD.
Valid/Invalid
相關(guān)PDF資料
PDF描述
45722.123.242 1 mm2, COPPER ALLOY, WIRE TERMINAL
45733.201.004 2.5 mm2, COPPER ALLOY, WIRE TERMINAL
45733.417.031 2.5 mm2, WIRE TERMINAL
45744.123.211 6 mm2, COPPER ALLOY, WIRE TERMINAL
45744.201.004 6 mm2, COPPER ALLOY, WIRE TERMINAL
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