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PG12864LRU-ORA-H-S0

LCD Module

Powertip Technology 

NO.PG12864LRU-ORA-H Rev:0

2-4.11 Power Control Register Set (1)

RE RS D7 D6 D5 D4 D3

D2

D1

D0

(X address)

vary in the above loops.

(Y address)

0

1

1

0

1

1 BIAS HALT PON ACL

(At the time of reset:BIAS,HLT,PON,ACL)=0H, read address: BH)

(1) ACL Command

The internal circuit can be initiallized. This command is enabled only at Master operation mode.

ACL=”0”:Normal operation

ACL=”1”:Initialization ON

If the power control register is read out immediately after executing ACL command (ACL=1), the D0 bit

becomes “0”.

In executing ACL command, the internal reset signals are internary generated by using display-clock

onginal oscillation (oscillation by OSC1 and OSC0, or clock input at CK pin).

Therefore, after execuiting ACL command, allow WAIT period having at least two cycle portion of the

original oscillation clock before the next processing is made.

(2) PON Command

The internal power supply for the Graphic Display circult is set ON/OFF.

PON=”0: Power supply for the Graphic Display circuit OFF

PON=”1: Power supply for the Graphic Display circuit ON

At PON=”1”: the booster and volage converter for the Graphic Display circuit function.

In accordance with the setting conditions of PMODE pin, the operative circuit part changes. See the

Function Description in detall.

(3) HALT Command

The conditions of power-saving are set ON/OFF by this command.

HALT=”0”: Nornal operation

HALT=”1”: Power-saving operation

When setting in the power-saving state, the consumed current can be reduced to a value near to the

stanby current. The intrnal conditions at power-saving are as follows.

(a) The oscillating circuit and power supply circuit are stopped.

(b) The LCD drive is stopped, and output of the segment drive and common driver are VSS lovel.

(c) The clock input from CK pin is inhibited.

(d) The contents of the Display RAM data are mintained.

(e) The operational mode maintains the state of command execution before executing power-saving

command.

(4) BIAS Command

The internal bias value for the Graphic display can be set by this command.

BIAS=”0”: 1/9 bias

BIAS=”1”: 1/7 bias

(Bias value for the Segment Display is 1/3 Fixed)

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