ASAHI KASEI
[AK8817/18]
(4) Reset
(4-1) Reset Timing
RSTN
CLKIN
pRES
1
2
99
100
Parameter
RSTN Pulse Width
Symbol
pRES
Min.
100
Typ.
Max
Unit
CLKs
(4-2) Power Down Sequence / Reset Sequence
Before PDN setting ( PDN to low ), Reset must be enabled for a duration of longer-than-100 clock time.
After PDN release ( PDN to high ), Reset must be enabled for 10 mS or longer till analog part reference voltage &
current are stabilized.
(CLKOUT=H)
CLKIN
sRES
hRES
VIH
VIL
RSTN
PDN
VIH
GND
Parameter
RSTN Pulse Width
Symbol
sRES
Min.
100
Typ.
Max
Unit
CLKs
Time from PDN to high to RSTN to
high
SCL low duration before RSTN to
rise
hRES
tSCLL
10
50
msec
nsec
At power-down, all control signals must be surely connected to either the selected power supply or ground level, and not
to VIH / VIL levels.
Rev.001E
15
2009 / 12
AKM [ ASAHI KASEI MICROSYSTEMS ]
