Technical Note

7/23

BU97930MUV,BU97931FV,BU9798KV,BU9798GUW,BU97500KV

www.rohm.com

2010.04 - Rev.A

© 2010 ROHM Co., Ltd. All rights reserved.

Oscillation Frequency Characteristics (Ta=-40 ~ 85°C, VDD=1.8V ~ 3.6V, VLCD=2.7V ~ 5.5V, VSS=0)

Parameter

Symbol

Limits

Unit

Conditions

MIN

MIN

MIN

Frame frequency 1

fFR1

57.6

64

70.4

Hz VDD=3.3V, Ta=25°C, fFR=64Hz setting

Frame frequency 2

fFR2

51.2

64

73.0

Hz VDD=2.5 ~ 3.6V

fFR=64Hz setting

Frame frequency 3

fFR3

45.0

-

64

Hz VDD=1.8 ~ 2.5V

fFR=64Hz setting

MPU interface Characteristics (Ta=-40 ~ 85°C, VDD=1.8V ~ 3.6V, VLCD=2.7V ~ 5.5V, VSS=0)

Parameter

Symbol

Limits

Unit

Conditions

MIN

TYP

MAX

Input rise time

tr

-

-

50

ns

Input fall time

tf

-

-

50

ns

SCL cycle time

tSCYC

250

-

-

ns

“H” SCL pulse width

tSHW

50

-

-

ns

“L” SCL pulse width

tSLW

50

-

-

ns

SD setup time

tSDS

50

-

-

ns

SD hold time

tSDH

50

-

-

ns

CSB setup time

tCSS

50

-

-

ns

CSB hold time

tCSH

50

-

-

ns

“H” CSB pulse width

tCHW

50

-

-

ns

Fig.2 Serial Interface Timing

CSB

SCL

SD

tCSH

tSCYC

tSLW

tSHW

tSDS

tSDH

tf

tr

tCSS

tCHW