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S6B010864CH SEGMENT DRIVER FOR DOT MATRIX LCD
INTRODUCTION
The S6B0108 is a LCD driver LSI with 64 channel output for dot matrix liquid crystal graphic display systems.
This device consists of the display RAM, 64 bit data latch, 64 bit drivers and decoder logic. It has the internal display RAM for storing the display data transferred from a 8 bit micro controller and generates the dot matrix Iiquid
crystal driving signals corresponding to stored data. The S6B0108 composed of the liquid crystal display system
in combination with the S6B0107 (64 channel common driver).
FEATURES
•Dot matrix LCD segment driver with 64 channel output
•Input and output signal
- Input: 8 bit parallel display data control signal from MPU divided bias voltage
(V0R, V0L, V2R, V2L, V3R, V3L, V5R, V5L)
- Output: 64 channel for LCD driving.
•Display data is stored in display data RAM from MPU.
•Interface RAM
- Capacity: 512 bytes (4096 bits)
- RAM bit data: RAM bit data = 1: On
RAM bit data = 0: Off
V0L and V0R (V2L & V2R, V3L & V3R, V5L & V5R) should be
connected by the same voltage.
92(89)
91(87)
90(86)
CS1B
CS2B
CS3
Input
Chip selection
In order to interface data for input or output, the terminals
have to be CS1B = L, CS2B = L, and CS3 = H.
2(100)MInputAlternating signal input for LCD driving.
Address control signal to determine the relation between Y
address of display RAM and terminals from which the data is
1(99)ADCInput
output.
ADC = H → Y0: S1 - Y63: S64
ADC = L → Y0: S64 - Y63: S1
Synchronous control signal.
100(98)FRMInput
Presets the 6-bit Z counter and synchronizes the common
signal with the frame signal when the frame signal becomes
high.
Enable signal.
Write mode (R/W = L) → data of DB<0:7> is latched at the
99(97)EInput
falling edge of E.
Read mode (R/W = H) → DB<0:7> appears the reading data
while E is at high level.
98(96)
97(95)
CLK1
CLK2
Input
2 phase clock signal for internal operation.
Used to execute operations for input/output of display RAM
data and others.
Display synchronous signal.
96(94)CLInput
Display data is latched at rising time of the CL signal and
increments the Z-address counter at the CL falling time.
Data or Instruction.
95(93)RSInput
RS = H → DB<0:7>: Display RAM data
RS = L → DB<0:7>: Instruction data
6
64CH SEGMENT DRIVER FOR DOT MATRIX LCDS6B0108
Table 1. Pin Description (Continued)
Pin Number
QFP(TQFP)
Symbol
Input /
Output
94(92)R/WInput
79-86
(77-84)
72-9
(70-7)
DB0-DB7Input/Output
S1-S64Output
93(91)RSTBInput
Description
Read or Write.
R/W = H → Data appears at DB<0:7> and can be read by the
CPU while E = H, CS1B = L, CS2B = L and
CS3 = H .
R/W = L → Display data DB<0:7> can be written at falling of E
when CS1B = L, CS2B = L and CS3 = H.
Data bus.
Three state I/O common terminal.
LCD segment driver output.
Display RAM data 1: On
Display RAM data 0: Off (relation of display RAM data & M)
M
L
H
Data
L
H
L
H
Output Level
V
2
V
0
V
3
V
5
Reset signal.
When RSTB=L,
- ON / OFF register becomes set by 0. (display off)
– Display start line register becomes set by 0 (Z-address 0
set,
display from line 0)
After releasing reset, this condition can be changed only by
instruction.
87(85), 88(88)
89(90)
NCNo connection. (open)
7
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