Epson SED 1520 Series Especificações descarregar pdf (Página 4)

SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE

MODEL NO: 12232-10

PACIFIC DISPLAY DEVICES 04.25.2012 4

1.6 Input Signal Function

Pin No.

Symbol

Level

Description

Notes*

H/L

H : Data signal, L : Instruction signal

/CS1

Chip select signal (Master Controller)

/CS2

Chip select signal (Slave Controller)

H/L

2KHz External Clock (-FAA Chip Type)

5 /RD L

L : Read data bus from controller mode

Appropriate /CS line must also be active

This is the “R/W” line on the Graphic Controller

3, 4

6 /WR L

L : Write data bus to controller mode

Appropriate /CS line must also be active

This is the ”E” line on the Graphic Controller

3, 4

VSS

Ground

DB0

H/L

Data bit 0

DB1

H/L

Data bit 1

DB2

H/L

Data bit 2

DB3

H/L

Data bit 3

DB4

H/L

Data bit 4

DB5

H/L

Data bit 5

DB6

H/L

Data bit 6

DB7

H/L

Data bit 7

VDD

5.0V

Supply voltage for logic

17 RES H  L

Falling Edge Reset – Selects 8080 Interface

Must be left “Low” during normal module operation

---

Input voltage for LCD backplane (Contrast)

LED-A

4.2V

LED Backlight Anode

LED-K

LED Backlight Cathode

*Notes:

1) VO is referenced to both VDD and temperature. See table on page 6 for exact value(s).

2) “/CS1” & “/CS2” tie to the separate /CS pins on the Master & Slave SED-1520 /

SBN1661G to be used as the

Controller select.

The “E” (/WR) line cannot be used as a “E” line in a 6800 implementation since it is common to both controllers.

3) This module can only use the 8080 style interface, and it is set by the state of the reset line.

Reset occurs when reset line transitions High to Low.

Reset line MUST be left in “Low” signal level condition during normal module operation

4) If /CS1 & /CS2 are both active (high), and /RD line is set to Read (low), damage can occur to module due to bus

contention causing serious over-current conditions.

5) External 2KHz clock must be supplied – see SED-1520 /

SBN1661G data sheet for clock signal requirements

1.7 LCM Power, Contrast Control and Bias

VR:

20Kohm

Backlight

Power

VDD: +5V

VEE: -5.0V

VSS

VDD

LED / EL

Backlight

LCM

1 2 3 4 5 6 7 8 9 ... 18 19

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