ASAHI KASEI
(5) I2C Bus Input/Output Timing < Ta = -30 ~ +85
°C
>
[AK8817]
tBUF
SDA
tHD
:
STA
tR
tF
tSU
:
STO
VSDAH
VSDAL
tF
SCL
tLOW
tR
VSDAH
VSDAL
tSU
:
STA
(5-1) Timing 1
VSDAH: 0.8PVDD
VSDAL : 0.2PVDD
Parameter
Bus Free Time
Hold Time (Start Condition)
Clock Pulse Low Time
Input Signal Rise Time
Input Signal Fall Time
Setup Time(Start Condition)
Setup Time(Stop Condition)
Symbol
tBUF
tHD:STA
tLOW
tR
tF
tSU:STA
tSU:STO
0.6
0.6
Min.
1.3
0.6
1.3
300
300
Max.
Unit
usec
usec
usec
nsec
nsec
usec
usec
The above I2C bus related timing is specified by the I2C Bus Specification, and it is not limited by the device
performance. For details, please refer to the I2C Bus Specification.
(5-2) Timing 2
tHD:DAT
SDA
tHIGH
VSDAH
VSDAL
SCL
tSU
:
DAT
VSDAH
VSDAL
VSDAH: 0.8PVDD
VSDAL : 0.2PVDD
Parameter
Data Setup Time
Data Hold Time
Clock Pulse High Time
Symbol
tSU:DAT
tHD:DAT
tHIGH
Min.
100 (note1)
0.0
0.6
0.9 (note2)
Max.
Unit
nsec
usec
usec
note 1 : when to use I2C Bus Standard mode, tSU:DAT >- 250 ns must be met.
note 2 : when the AK8817 is used in such bus interface where tLOW is not extended ( at minimum specification of
tLOW ), this condition must be met.
MS0413-E-03
12
2006 / 05
AKM [ ASAHI KASEI MICROSYSTEMS ]
