EM62100AGH datasheet(44/60 Pages) EMC

44 / 60 page

EM62100

65 COM/132 SEG STN LCD Driver

38 •

•••

Product Specification (V1.1) 09.13.2005

(This specification is subject to change without further notice)

Sleep Mode

This mode stops every operation of the LCD display system, and can reduce current

consumption nearly to a static current value if no access is made from the

microprocessor. The internal status in the sleep mode is as follows:

(1) Stops the oscillator circuit and LCD power supply circuit.

(2) Stops the LCD driver and outputs the VSS level as the segment/common driver

output.

(3) Holds the display data and operation mode that momentarily existed before the start

of the sleep mode.

(4) The MPU can access the built-in display data RAM.

Standby Mode

Stops the operation of the duty LCD display system and turns on only the static drive

system to reduce power consumption to the minimum level required for static drive.

The ON operation of the static drive system indicates that the EM62100 is in standby

mode. The internal status in the standby mode is as follows:

(1) Stops the LCD power supply circuit.

(2) Stops the LCD drive and outputs the VSS level as the segment / common driver

output. However, the static drive system still operates.

(3) Holds the display data and operation mode that momentarily existed before the start

of the standby mode.

(4) The MPU can access the built-in display data RAM.

When the Reset command is issued in the standby mode, the sleep mode is set.

When the LCD drive voltage level is provided by an external resistive driver, the

current of this resistor must be cut so that it may be fixed to floating or VSS level,

prior to or concurrently used, causing the EM62100 to go to the sleep mode or

standby mode.

When an external power supply is used, likewise, the function of this external

power supply must be stopped so that it may be fixed to floating or VSS level, prior

to or concurrently used, causing the EM62100 to go to the sleep mode or standby

mode.

7.2.21 NOP

Non-Operation Command

RDB

WRB

Hex

E3H

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