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* This specification are subject to be changed without notice.

Preliminary

Preliminary

Preliminary

Preliminary

Preliminary

EM83040A

LCD CONTROLLER

5.31.2001

GENERAL DESCRIPTION

The EM83040A is a dot matrix LCD driver which is fabricated by low power CMOS technology. This chip

includes 80- bits shift register , 80 bits data latch and 80 bits level driver. A LCD RAM inside can be mapping

to LCD signal. It converts RAM data to parallel data and output lcd waveform to LCD.

FEATURES

(1)

Supply power 2.6~6V

(2)

Internal RAM : 2.5k x 4 bits

(3)

RAM can be controlled by eight signals including four bit data bus.

(4)

LCD drive voltage :<13V

(5)

Duty: 1/32, 1/48, 1/80

(6)

Build in DC converter double and triple

(7)

Modularized function: connect to another 83040 to extent LCD matrix

(8)

One DC converter enabled and other 83040 can shared with this.

(9)

Internal regulator output for DC converter controlled by control register. (2.5V to 4.6V, 8 level)

(10) Chip form (EM83040AH), 128 pin package (14mmx20mm EM83040AAQ), 160 pin package (EM83040ABQ)

(11) Bias : 1/5 for 32 common, 1/7 for 48 common, 1/9 for 80 common. Fixed by internal circuit.

(12) Internal RC clock about 250 KHz.

APPLICATION

(1)

Data Bank

(2)

LCD toy

(3)

Education computer

PIN ASSIGNMENTS

VREG

EM83040ABQ