KS0093 datasheet(13/55 Pages) SAMSUNG

13 / 55 page

26 COM / 80 SEG DRIVER & CONTROLLER FOR STN LCD

KS0093

FUNCTION DESCRIPTION

SYSTEM INTERFACE

KS0093 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

CSB

RW_WR

E_RD

DB0

∼∼DB3

DB4

∼∼DB5

DB6

DB7

8 bit (H)

CSB

R/W

DB0

∼DB3

DB4

∼DB5

DB6

DB7

68 series

(H)

4 bit (L)

CSB

R/W

∗

(1)

DB4

∼DB5

DB6

DB7

8 bit (H)

CSB

DB0

∼DB3

DB4

∼DB5

DB6

DB7

Bus mode

(H)

80 series

(L)

4 bit (L)

CSB

∗

DB4

∼DB5

DB6

DB7

Serial

mode

(L)

(H)/(L)

(2)

(H)/(L)

CSB

(H)/(L)

∗

SCL

NOTES:

1. Don’t care (high, low or open)

2. Fixed high (VDD) or low (VSS)

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

KS0093 Datasheet(PDF) 13 Page - Samsung semiconductor

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