[AK2331]
Digital DC Characteristics
Parameter
High level input voltage
Low level input voltage
High level input current
Symbol
V
IH
V
IL
I
IH
Condition
CSN, SCLK, SDATA,
RSTN
CSN, SCLK, SDATA,
RSTN
V
IH
= DVDD
CSN, SCLK, SDATA,
RSTN
V
IL
= 0V
CSN, SCLK, SDATA,
RSTN
Min.
0.8DVDD
0.2DVDD
1
Typ.
Max.
Unit
V
V
μA
Low level input current
I
IL
-1
μA
System Reset
Parameter
Hardware reset signal
input width
Software reset
Symbol
t
RSTN
Condition
RSTN pin
SRST
register
Min.
1
Typ.
Max.
Unit
μs
Remarks
*1)
*2)
*1) 35ms or more after power-on, be sure to perform a hardware reset operation (register initialization).
When a low pulse is input for 1μs or more, a reset is made. At this time, set the digital input (DI)
pins: RSTN to high, CSN to high, and SCLK to low.
t
RSTN
RSTN
V
IH
V
IL
*2) When the SRST[7:0] register is set to 0xAA (10101010), a software reset is made.
This setting initializes all registers.
For details, refer to "Register Functions".
MS0903-E-00
-7-
2008/03
AKM [ ASAHI KASEI MICROSYSTEMS ]
