S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 136

• Manufacturer Part Number: S1D1
• Description: LCD Controller-driver With Built-in Character ROM
• Manufacturer: Epson Electronics America, Inc.

S1D15300 Series
Output Status Selector
The S1D15300 series except S1D15301 can set a COM output scan direction to reduce restrictions at LCD module assembly. This scan direction
is set by setting “1” or “0” in the output status register D3. Fig.5 shows the status.
Fig. 5 shows the status.
The COMS pin is assigned to COM32 on S1D15300 and it is assigned to COM64 on S1D15302 independent from their output status.
The COMS pin of the S1D15303 is assigned to COM16 the COMS pin of the S1D15304 is assigned to COM8 and the COMS pin of the S1D15305
is assigned to COM34.
Figure 5 shows the COM output pin numbers of S1D15302D00
COM31 must be replaced by COM32 to COM63.
Display Timing Generator
This section explains how the display timing generator circuit
operates.
Signal generation to line counter and display data latch
circuit
The display clock (CL) generates a clock to the line counter and a
latch signal to the display data latch circuit.
The line address of the display RAM is generated in synchronization
with the display clock. 132-bit display data is latched by the display
data latch circuit in synchronization with the display clock and
output to the segment LCD drive output pin.
The display data is read to the LCD drive circuit completely
independent of access to the display data RAM from the microproc-
essor.
LCD AC signal (FR) generation
The display clock generates an LCD AC signal (FR). The FR causes
the LCD drive circuit to generate a AC drive waveform.
It generates a 2-frame AC drive waveform.
5–12
S1D15300D00
S1D15300D10
S1D15300D15
S1D15301D00
S1D15302D00
S1D15302D14
S1D15302D11
S1D15303D15
S1D15304D14
S1D15305D10
ADC
(D0)
LCD output
FR (master output)
Master Common
Slave Common
"0"
"1"
D3
0
1
0
1
–
0
1
0
1
0
1
0
1
0
1
COM15
COM16
COM31
COM0
COM7
COM8
COM17
COM16
O0
0 (H)
83 (H)
63
0
15
0
33
0
31
64 0
64
1
2
SEG100
SEG100
SEG100
SEG100
30 31
0
31
**
EPSON
32 33
and S1D15302D11
34
Display data RAM
Column address
When the S1D15300 is operated in slave mode on the assumption of
multi-chip, the FR pin and CL pin become input pins.
Common timing signal generation
The display clock generates an internal common timing signal and
a start signal (DYO) to the common driver. A display clock resulting
from frequency division of an oscillation clock is output from the CL
pin.
When an AC signal (FR) is switched, a high pulse is output as a DYO
output at the training edge of the previous display clock.
Refer to Fig. 6. The DYO output is output only in master mode.
When the S1D15300 series is used for multi-chip, the slave requires
to receive the FR, CL, DOF signals from the master.
Table 4 shows the FR, CL, DYO and DOF status.
S1D1530
SEG100
SEG100
SEG132
SEG116
SEG116
SEG124
SEG124
SEG98
SEG98
Model
62 63
*
D
****
64 0
64
**
Operation
mode
Master
Slave
in the master mode. In the slave mode, COM0 to
1
SEG100
SEG100
2
HZ denotes a high-impedance status.
COM0
COM31
COM0
COM31
Table 4
Output Output Output Output
Input
30
FR
31
32
Input
CL
COM16
COM15
COM8
COM7
COM0
COM7
COM18
COM17
DYO
83 (H)
COM31
COM0
COM31
COM0
Hz
O131
0 (H)
15
0
7
0
33
0
31
0
Rev.1.4
Input
DOF