S6A0092 Datasheet, PDF (13/54 Pages) Samsung semiconductor – 80 SEG / 26 COM DRIVER & CONTROLLER FOR STN LCD

80 COM / 26 COM DRIVER & CONTROLLER FOR STN LCD
S6A0092
FUNCTION DESCRIPTION
SYSTEM INTERFACE
S6A0092 has two kinds of interface type with MPU: bus mode, serial mode. Serial or bus mode is selected by PS pin.
In bus mode, 4-bit bus or 8-bit bus is selected by IF pin, and 68 series MPU or 80 series MPU is selected by MI pin.
Table 4. Various Kinds of MPU Interface according to PS, MI and IF
PS
MI
IF
CSB RS RW_WR E_RD
68 series 8 bit (H) CSB RS
R/W
E
Bus mode
(H)
4 bit (L) CSB RS
R/W
E
(H)
80 series 8 bit (H) CSB RS
WR
RD
(L)
4 bit (L) CSB RS
WR
RD
Serial
mode
(L)
(H)/(L)⁽²⁾ (H)/(L) CSB RS (H)/(L) (H)/(L)
NOTES:
1. Don’ t care (high, low or open)
2. Fixed high (VDD) or low (VSS)
DB0∼ DB3
DB0∼DB3
∗⁽¹⁾
DB0∼DB3
∗
∗
DB4∼ DB5
DB4∼DB5
DB4∼DB5
DB4∼DB5
DB4∼DB5
∗
DB6
DB6
DB6
DB6
DB6
SCL
DB7
DB7
DB7
DB7
DB7
SI
PS: "High" = bus mode, "Low" = serial mode
MI: "High" = 68-series MPU, "Low" = 80-series MPU
IF: "High" = 8 bit mode, "Low" = 4 bit mode (PS: "High")
CSB: "High" = chip is not selected, "Low" = chip is selected
RS: "High" = data register, "Low" = instruction register
RW_WR: Read / Write indicating signal in 68 mode or active low signal for enabling write in 80 mode
E_RD: Active high signal for enabling command is 68 mode or active low signal for enabling read in 80 mode.
SCL (DB6): Serial clock input
SI (DB7): Serial data input
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