AK8817VG 查看數據表（PDF） - Asahi Kasei Microdevices

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AK8817VG

(AK8817 / AK8818) NTSC/PAL Digital Video Encoder

Asahi Kasei Microdevices 

ASAHI KASEI

(5) I2C Bus Input/Output Timing < Ta = -30 ~ +85 °C >

[AK8817/18]

tBUF tHD:STA

tR

tF

tSU:STO

SDA

SCL

(5-1) Timing 1

VSDAH: 0.8PVDD

VSDAL : 0.2PVDD

tF

tR

tLOW

tSU:STA

Parameter

Symbol

Min.

Max.

Unit

Bus Free Time

tBUF

1.3

usec

Hold Time (Start Condition)

tHD:STA

0.6

usec

Clock Pulse Low Time

tLOW

1.3

usec

Input Signal Rise Time

tR

300

nsec

Input Signal Fall Time

tF

300

nsec

Setup Time(Start Condition)

tSU:STA

0.6

usec

Setup Time(Stop Condition)

tSU:STO

0.6

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

VSDAH

VSDAL

VSDAH

VSDAL

SDA

SCL

tHIGH

VSDAH

VSDAL

VSDAH

VSDAL

VSDAH: 0.8PVDD

VSDAL : 0.2PVDD

tSU:DAT

Parameter

Symbol

Min.

Max.

Unit

Data Setup Time

tSU:DAT 100 (note1)

nsec

Data Hold Time

tHD:DAT

0.0

0.9 (note2)

usec

Clock Pulse High Time

tHIGH

0.6

usec

note 1 : when to use I2C Bus Standard mode, tSU:DAT >- 250 ns must be met.

note 2 : when the AK8817/18 is used in such bus interface where tLOW is not extended ( at minimum specification of

tLOW ), this condition must be met.

Rev.001E

17

2009 / 12

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