BU91R65CH-M
Terminal Description
Terminal Name
Handling
when unused
I/O
Function
VDD
VLCD
VSS
I
I
I
Power supply for logic
-
-
-
Power supply for LCD driving circuit
Ground
Single-/Multi-chip setting
2-wire Interface
Slave Address[7:1]
3-wire Interface
Function
Master
MS1
MS2
I
I
VDD / VSS
VDD / VSS
MS2
MS1
Function
Master
Slave1
Slave2
Slave3
VSS
VSS
VDD
VDD
VSS
VDD
VSS
VDD
0111110 / 0111000
0111111 / 0111001
0111110 / 0111000
0111111 / 0111001
Slave1
Slave2
Slave3
Clock mode setting
VDD: External Clock Mode, VSS: Internal Clock Mode
Clock input / output setting
External Clock Mode: input of external clock
Internal Clock Mode: output of internal clock
Synchronous signal input / output for multi-chip mode
Master: Synchronous signal output
Slave: master SYNCB signal input
EXTCLK
OSCIO
I
VDD / VSS
OPEN
I/O
SYNCB
IFSEL
I/O
I
OPEN
MCU Interface select
VDD: 3-wire Serial Interface
VDD / VSS
VSS: 2-wire Serial Interface
SDAI
SDAO
SCL
I
O
I
Serial data input for 2-wire Serial Interface
Serial data output for 2-wire Serial Interface
VSS
OPEN
VSS
Serial clock for 2-wire Serial Interface
Chip select for 3-wire Serial Interface
Serial clock for 3-wire Serial Interface
Serial data input for 3-wire Serial Interface
Serial data output for 3-wire Serial Interface
CSB
SCK
SDI
I
I
VSS
VSS
I
VSS
SDO
O
OPEN
Inhibit display status in spite of Display On by command setting
VDD: Keep display status by command setting
VSS: Inhibit display status. All SEG and COM terminals output VSS level.
INHB
I
I
VDD
Duty Drive select
DUTY0
VDD / VSS
DUTY1
DUTY0
VSS
Duty Drive
VSS
1/4 Duty Drive
1/3 Duty Drive
1/2 Duty Drive
VSS
VDD
VSS
DUTY1
I
VDD / VSS
VDD
VDD
VDD
Static Drive (also set to 1/1 Bias)
LCD Bias select
VDD: 1/2 Bias, VSS: 1/3 Bias (Static Drive: don’t care)
Output for glass breaking detection
Connect to GLSCHKI for glass breaking detection.
Input for glass breaking detection
Connect to GLSCHKO for glass breaking detection.
Output data of error detection
VDD: Abnormal status, VSS: Normal status
BIAS
I
VDD / VSS
OPEN
GLSCHKO
GLSCHKI
ERROUT
O
I
VSS
O
OPEN
DUMMY0 to
DUMMY3
DUMMY
-
-
I
Can be used for the contact resistance measurement.
OPEN
OPEN
VSS
Open
POR enable setting (Note 1)
TR
VDD: POR disable, VSS: POR enable
Test input (ROHM use only)
Must be connected to VSS.
T0,T1,T2
I
VSS
SEG0 to SEG159
COMA0 to COMA3
COMB0 to COMB3
COMC0 to COMC3
O
O
O
O
Segment output for LCD driving
Common output for LCD driving
Common output for LCD driving
Common output for LCD driving
OPEN
OPEN
OPEN
OPEN
(Note 1) This function is guaranteed by design, not tested in production process. Software Reset is necessary to initialize IC in case of TR = VDD.
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TSZ02201-0P3P0D301700-1-2
08.Jan.2020 Rev.003
© 2016 ROHM Co., Ltd. All rights reserved.
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TSZ22111 • 15 • 001