EM65570 ELAN Microelectronics Corp, EM65570 Datasheet - Page 24

• Manufacturer Part Number: EM65570
• Description: 68com / 98seg 65k Color Stn Lcd Driver
• Manufacturer: ELAN Microelectronics Corp

EM65570
68COM/ 98SEG 65K Color STN LCD Driver
18 x
After completing the 8-bit data transfer or when making no access, be sure to set the
serial clock input (SCL) to “L”. Care should be taken during board wiring to avoid
external noise from contaminating the SDA and SCL signals. To prevent transfer error
due to external noise, release chip select (CSB = “H”) after every complete 8-bit data
transfer.
7.1.5.2 3-Wire Type Serial Interface
SDA and SCL input pins
register and counter are reset to the initial condition
sequentially in the order of RS, D7 to D0 at the rising edge of the serial clock (SCL)
The first serial input data (RS) and the SPOL pin determine whether serial data input
(SDA) is used as display RAM data or as control register data.
serial clock input (SCL) to “L”. Care should be taken during board wiring to avoid
external noise from contaminating the SDA and SCL signals To prevent transfer error
due to external noise, release chip select (CSB = “H”) after every complete 9-bit data
transfer.
When the chip select is active (CSB = “L”), the 3-wire serial interface works through the
After completing the 9-bit data transfer or when making no access, be sure to set the
CSB
SDA
CSB
SDA
SCL
SCL
RS
RS
0
1
Display RAM/Register
Display RAM Data
Control Register Data
SPOL = “0”
RS
1
1
D7
D7
2
.
Figure 7-2 4-Wire Type Serial Interface
Figure 7-3 3-Wire Type Serial Interface
D6
2
When chip select is inactive (CSB = “H”), the internal shift
D6
3
D5
3
(This specification is subject to change without further notice)
D5
4
D4
4
D4
5
RS
0
1
D3
5
Product Specification (V1.0) 09.05.2005
D3
6
.
Display RAM/Register
Control Register Data
Display RAM Data
Serial data SDA are input
D2
6
D2
7
SPOL = “1”
7
D1
8
D1
D0
8
D0
9
.