Silan
Semiconductors
SC9235
4. INITIALIZATION AND BACKUP OPERATION
1) Initialization operation
When power on, volume level is set to initial value (46dB) by setting INT pin to "L" level for a while.
VDD
VDD
VIL
INT
0V
t
t≥1ms
Adjust condenser value which is set INT pin to the period while INT pin is "L" level is longer than 1ms when
Power on.
2) Backup operation
Internal operation is all stopped when INH pin is "L" level, and prohibit input and output.
Volume data is remains while Backup mode with low current consumption.
VDD
0V
NORMAL MODE
VDD
2V
INH
BACKUP MODE
Back up
VDDMIN≥2.0V
Minimum Voltage for Back up is 2.0V.
Back up data is lost
NORMAL MODE
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
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