參數(shù)資料
型號(hào)： LH155N
英文描述： Industrial Control IC
中文描述： 工業(yè)控制IC
文件頁數(shù)： 10/51頁
文件大?。?/td> 288K
代理商： LH155N
10
LH155BA
V
A
V
A
V
SS
(0 V)
V
B
V
SS
(0 V)
V
C
V
D
Output
Control Signal 1
Output
Control Signal 3
Output
Control Signal 2
Output
Control Signal 4
O
Applicable pins
SEGS
0
-SEGS
11
,
COMS
0
-COMS
2
Output Control Signal 1
O
Output Control Signal 2
V
SS
(0 V)
V
DD
V
DD
V
SS
(0 V)
Fig. 5. LCD Drive Output Circuit (Segment Display)
Applicable pins
ICON
1
, ICON
2
Fig. 6. LCD Drive Output Circuit (Icon Display)
2. FUNCTIONAL DESCRIPTION
2.1. MPU Interface
2.1.1. INTERFACE TYPE SELECTION
The LH155BA transfers data through 8-bit parallel
I/O (D
7
to D
0
) or serial data input (SDA, SCL).
The selection between parallel interface and serial
interface is made by setting the state of P/S pin to
"H" or "L".
When selecting serial interface, data-reading cannot
be performed, but data-writing can.
P/S
H
L
I/F TYPE
Parallel
Serial
CSB
CSB
CSB
RS
RS
RS
RDB
RDB
–
WRB
WRB
–
M86
M86
–
SDA
–
SDA
SCL
–
SCL
DATA
D
7
to D
0
–
2.1.2. PARALLEL INPUT
The LH155BA can transfer data in parallel by
directly connecting 8-bit MPU to the data bus when
parallel interface is selected with P/S pin.
As an 8-bit MPU, either 80-family MPU interface or
68-family MPU interface is selected with M86 pin.
M86
H
L
MPU TYPE
68-family MPU
80-family MPU
CSB
CSB
CSB
RS
RS
RS
RDB
E
RDB
WRB
R/W
WRB
DATA
D
7
to D
0
D
7
to D
0
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