BU97540KV-M Datasheet, PDF (7/70 Pages) Rohm – Multi-function Segment Drivers

BU97540KV-M
Pin Description
Symbol
Pin No.
S1/P1/G1 to
S9/P9/G9
79,80,
1 to 7
S10 to S52,
S72
8 to 50, 74
KS1/S53 to
KS6/S58
51 to 56
KI1/S59 to
KI5/S63
57 to 61
SYNCIO/S64
62
CLKIO/S65
63
S66/TESTIN
64
COM5/S67
COM1 to COM4
MS
65
69 to 66
72
OSC_IN/S73
75
SCE
76
SCL
77
SDI
78
SDO
73
VDD
70
VSS
71
Function
Active I/O
Segment output for displaying the display data transferred by
serial data input. The S1/P1/G1 to S6/P6/G6 pins can also be
used as General –purpose outputs when so set up by the
-
O
control data.
Segment output for displaying the display data transferred by
serial data input.
-
O
Key scan outputs
Although normal key scan timing lines require diodes to be
inserted in the timing lines to prevent shorts, since these
outputs are unbalanced CMOS transistor outputs, these
outputs will not be damaged by shorting
-
O
when these outputs are used to form a key matrix. The
KS1/S53 to KS6/S58 pins can be used as segment outputs
when so specified by the control data.
Key scan inputs
These pins have built-in pull-down resistors.
The KI1/S59 to KI5/S63 pins can be used as segment
-
I/O
outputs when so specified by the control data.
Segment Output for Master without Slave application.
-
O
SYNC output signal for Master with Slave application and
-
O
SYNC input signal for Slave application.
H
I
Segment Output for Master without Slave application.
-
O
CLK output signal for Master with Slave application and
-
O
CLK input signal for Slave application.
↑
I
TESTIN Input for Master Application.
-
I
Segment Output for Slave Application.
-
O
COMMON / SEGMENT output for LCD driving
Assigned as COMMON output in1/5 Duty mode and
-
O
SEGMENT output in 1/1 Duty, 1/3 Duty and 1/4 Duty modes
Common driver output pins. The frame frequency is fo[Hz].
-
O
Master / Slave Control Switch
L : Master, H : Slave
-
I
Segment output for displaying the display data transferred by
serial data input.
The pin OSC_IN/S73 can be used as external frequency
-
I/O
input pin when set up by the control data.
Serial data transfer inputs. Must be connected to the
controller.
SCE: Chip enable
H
I
SCL: Synchronization clock
↑
I
SDI: Transfer data
-
I
Output data
-
O
Power supply pin of the IC
A power voltage of 2.7V to 6.0V must be applied to this pin.
-
-
Power supply pin. Must be connected to ground.
-
-
Handling
when
unused
OPEN
OPEN
OPEN
OPEN
OPEN
-
-
OPEN
-
-
VDD
OPEN
OPEN
-
-
OPEN
-
-
-
OPEN
-
-
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TSZ02201-0P4P0D300970-1-2
29.Jun.2015 Rev.002