1

* This specification are subject to be changed without notice.

9.14.2001

EM83040B

LCD CONTROLLER

Preliminary

Preliminary

Preliminary

Preliminary

Preliminary

GENERAL DESCRIPTION

The EM83040B 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 waveform to LCD.

FEATURES

(1)

Supply power: 2.5~5.5V

(2)

LCD drive voltage: 3.6 to15V

(3)

Internal RAM: 2.5k x 4 bits

(4)

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

(5)

Duty: 1/32, 1/48, 1/64, 1/80

(6)

Build in DC/DC converter: double, triple, quad and five times.

(7)

Modularized function: connect to another 83040B to extent LCD matrix

(8)

One DC converter enabled and other 83040B can share with this.

(9)

Internal regulator output for DC/DC converter controlled by control register.

(10) Chip form (EM83040BH), 128 pin package (14mm x 20mm EM83040BAQ), 160 pin package

(EM83040BBQ)

(11) Bias: 1/5 (32 COMMON), 1/7 (48 COMMON), 1/9 (64 and 80 COMMON) fixed by internal circuit.

(12) Internal RC clock about 250 KHz.

APPLICATION

(1)

Data Bank

(2)

LCD toy

(3)

Education computer