BU97600XXX Datasheet, PDF (51/63 Pages) Rohm – AEC-Q100 Qualified

BU97600xxx Series
Datasheet
INHb Pin and Display Control
Since the IC internal data (1/4-Duty: the display data D1 to D148 and the control data, 1/3-Duty: the display data D1 to D111
and the control data, 1/2-Duty: the display data D1 to D74 and the control data, 1/1-Duty: the display data D1 to D37 and the
control data) is undefined when power is first applied, applications should set the INHb pin low at the same time as power is
applied to turn off the display (This sets the S1 to S37, COM1 to COM4 to the VSS level.) and during this period send serial
data from the controller. The controller should then set the INHb pin high after the data transfer has completed. This procedure
prevents meaningless displays at power on.
1. 1/4-Duty
t1^(Note34)
VDD
INHb
SCE
Internal data
D1 to D37, KM0 to KM2,
P0 to P4 FL, DR, DT0 to DT1, OC,
FC0 to FC6, SC, BU0 to BU2
Internal data
D38 to D74,EP1 to EP16,PG1 to PG6,
PF0 to PF3, CT0 to CT1
Internal data
D75 to D111, W10 to W38
Display data and control data transfer
VIL1
(Note34)
tc
VIL1
Undefined
Undefined
Undefined
Defined
Defined
Defined
Internal data
D112 to D148, W40 to W68
Undefined
Defined
Undefined
Undefined
Undefined
Undefined
(Note34) t1≥0, tc: min 10us
2. 1/3-Duty
Figure 40. Power ON/OFF and INHb Control Sequence (1/4-Duty)
t1^(Note35)
VDD
INHb
SCE
Internal data
D1 to D37, KM0 to KM2,
P0 to P4 FL, DR, DT0 to DT1, OC,
FC0 to FC6, SC, BU0 to BU2
Internal data
D38 to D74,EP1 to EP16,PG1 to PG6,
PF0 to PF3, CT0 to CT1
Internal data
D75 to D111, W10 to W38
Display data and control data transfer
VIL1
(Note35)
tc
VIL1
Undefined
Undefined
Undefined
Defined
Defined
Defined
Internal data
W40 to W68
Undefined
Defined
Undefined
Undefined
Undefined
Undefined
(Note35) t1≥0, tc: min 10us
Figure 41. Power ON/OFF and INHb Control Sequence (1/3-Duty)
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02.Apr.2015 Rev.002