參數(shù)資料
型號(hào): M34556M8-XXXFP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO42
封裝: 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42
文件頁數(shù): 137/147頁
文件大小: 1087K
代理商: M34556M8-XXXFP
Rev.3.02
Dec 22, 2006
page 7 of 142
REJ03B0025-0302
4556 Group
CONNECTIONS OF UNUSED PINS
Connection
Connect to VSS.
Open.
Connect to VSS.
Open.
Connect to VSS.
Open.
Connect to VSS.
Open.
Connect to VSS.
Open.
Connect to Vss.
Open.
Connect to Vss.
Open.
Pin
XIN
XOUT
XCIN/D6
XCOUT/D7
D0–D4
D5/INT
C/CNTR
P00/SEG21
P03/SEG24
P10/SEG25
P13/SEG28
P20/SEG17
P23/SEG20
COM0–COM3
SEG0/VLC3
SEG1/VLC2
SEG2/VLC1
SEG3–SEG10
(Note)
Usage condition
RC oscillator is not selected
N-channel open-drain is selected for the output structure.
INT pin input is disabled.
N-channel open-drain is selected for the output structure.
CNTR input is not selected for timer 1 count source.
The key-on wakeup function is invalid.
Segment output is not selected.
N-channel open-drain is selected for the output structure.
Pull-up transistor is OFF.
The key-on wakeup function is invalid.
Segment output is not selected.
N-channel open-drain is selected for the output structure.
Pull-up transistor is OFF.
The key-on wakeup function is invalid.
Segment output is not selected.
N-channel open-drain is selected for the output structure.
SEG0 pin is selected.
SEG1 pin is selected.
SEG2 pin is selected.
Note: SEG11 to SEG16 pins are not existed in the 4556 Group.
(Note when connecting to VSS and VDD)
q Connect the unused pins to VSS and VDD using the thickest wire at the shortest distance against noise.
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