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參數(shù)資料
| 型號： | KS0724 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 65 COM / 132 SEG DRIVER & CONTROLLER FOR STN LCD |
| 中文描述： | 65的COM / 132賽格驅(qū)動 |
| 文件頁數(shù)： | 18/66頁 |
| 文件大?。?/td> | 899K |
| 代理商： | KS0724 |
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65 COM / 132 SEG DRIVER & CONTROLLER FOR STN LCD PRELIMINARY SPEC. VER. 0.8 KS0724
14
FUNCTIONAL DESCRIPTION
MICROPROCESSOR INTERFACE
Chip Select Input
There are CS1B and CS2 pins for chip selection. The KS0724 can interface with an MPU only when CS1B is "L"
and CS2 is "H". When these pins are set to any other combination, RS, E_RDB, and RW_WRB inputs are
disabled and DB0 to DB7 are to be high impedance. And, in case of serial interface, the internal shift register and
the counter are reset.
Parallel / Serial Interface
KS0724 has three types of interface with an MPU, which are one serial and two parallel interfaces. This parallel or
serial interface is determined by PS pin as shown in table 8.
Table 8. Parallel / Serial Interface Mode
PS
Type
CS1B
CS2
C68
Interface mode
H
L
*
×
6800-series MPU mode
8080-series MPU mode
H
Parallel
CS1B
CS2
L
Serial
CS1B
CS2
Serial-mode
*
×
: Don't care
Parallel interface (PS = "H")
The 8-bit bi-directional data bus is used in parallel interface and the type of MPU is selected by C68 as shown in
table 9. The type of data transfer is determined by signals at RS, E_RDB and RW_WRB as shown in Table 10.
Table 9. Microprocessor Selection for Parallel Interface
C68
CS1B
CS2
RS
E_RDB
RW_WRB
DB0 to DB7
MPU bus
H
L
CS1B
CS1B
CS2
CS2
RS
RS
E
RW
/WRB
DB0 to DB7
DB0 to DB7
6800-series
8080-series
/RDB
Table 10. Parallel Data Transfer
Common
6800-series
8080-series
RS
E_RDB
(E)
RW_WRB
(RW)
E_RDB
(/RDB)
RW_WRB
(/WRB)
Description
H
H
H
L
H
Display data read out
H
H
L
H
L
Display data write
L
L
H
H
H
L
L
H
H
L
Register status read
Writes to internal register (instruction)
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