AK8963 Datasheet, PDF (10/18 Pages) Asahi Kasei Microsystems – 3-axis Electronic Compass

5.3.5. I²C Bus Interface
CSB pin = “H”
I²C bus interface is compliant with Standard mode and Fast mode. Standard/Fast mode is selected
automatically by fSCL.
[AK8963]
(1) Standard mode
fSCL£100kHz
Symbol
Parameter
fSCL
tHIGH
tLOW
tR
tF
tHD:STA
tSU:STA
tHD:DAT
tSU:DAT
tSU:STO
tBUF
SCL clock frequency
SCL clock "High" time
SCL clock "Low" time
SDA and SCL rise time
SDA and SCL fall time
Start Condition hold time
Start Condition setup time
SDA hold time (vs. SCL falling edge)
SDA setup time (vs. SCL rising edge)
Stop Condition setup time
Bus free time
Min.
4.0
4.7
4.0
4.7
0
250
4.0
4.7
Typ.
Max.
100
1.0
0.3
Unit
kHz
ms
ms
ms
ms
ms
ms
ms
ns
ms
ms
(2) Fast mode
100kHz<fSCL£400kHz
Symbol
Parameter
fSCL
tHIGH
tLOW
tR
tF
tHD:STA
tSU:STA
tHD:DAT
tSU:DAT
tSU:STO
tBUF
tSP
SCL clock frequency
SCL clock "High" time
SCL clock "Low" time
SDA and SCL rise time
SDA and SCL fall time
Start Condition hold time
Start Condition setup time
SDA hold time (vs. SCL falling edge)
SDA setup time (vs. SCL rising edge)
Stop Condition setup time
Bus free time
Noise suppression pulse width
[I²C bus interface timing]
1/fSCL
SCL
Min.
0.6
1.3
0.6
0.6
0
100
0.6
1.3
Typ.
Max.
Unit
400
kHz
ms
ms
0.3
ms
0.3
ms
ms
ms
ms
ns
ms
ms
50
ns
VIH2
VIL2
SDA
tBUF
tLOW tR
tHIGH tF
SCL
tHD:STA
Stop Start
tHD:DAT
tSU:DAT tSU:STA
Start
VIH2
VIL2
tSP
VIH2
VIL2
tSU:STO
Stop
ShortDatasheet-E-01
- 10 -
2012/02