hd66789 Renesas Electronics Corporation., hd66789 Datasheet - Page 49

• Manufacturer Part Number: hd66789
• Description: 528-channel, One-chip Driver For Amorphous Tft Panels With 262,144-color Display Ram, Power Supply Circuit, And Gate Circuit
• Manufacturer: Renesas Electronics Corporation.

HD66789
SLP: When SLP = 1, the HD66789 enters into the sleep mode. In the sleep mode, internal display
operation is halted except the R-C oscillator to reduce current consumption. Only power control
instructions
(BT2–0, DC2–0, AP2–0, SLP, STB, VC2-0, VRH4-0, VCOMG, VDV4-0, and VCM4-0 bits) are executed
during the sleep mode. No change is made to the GRAM data or instructions during the sleep mode,
although it is retained.
STB: When STB = 1, the HD66789 enters into the standby mode. In the standby mode, display operation
is completely halted, and all internal operation including the internal R-C oscillator and reception of
external clock pulse, is halted. For details, see the “Standby Mode” section. Only instructions to release
the standby mode (STB = 0) and to start oscillation are accepted during the standby mode. Changes in the
GRAM data or instructions during the standby mode are susceptible to destruction. These changes should
be made after releasing the standby mode.
VC2-0: Adjust the reference voltage for VLEG1OUT, VciOUT voltages to the optimum ratio of Vci.
AP2
0
0
0
0
1
1
1
1
DC02
0
0
0
0
1
1
1
1
Rev.0.12, May 09 2003, page 49 of 156
0
0
1
1
0
0
1
1
AP1
DC01
0
0
1
1
0
0
1
1
AP0
0
1
0
1
0
1
0
1
DC00
0
1
0
1
0
1
0
1
Amount of current in operational amplifier
halt
setting disabled
0.5 (fixed)
0.75 (fixed)
1 (fixed)
1.25 (fixed)
1.5 (fixed)
setting disabled
Step-up circuit 1
step-up frequency
oscillation clock/8
oscillation clock/16
oscillation clock/32
oscillation clock/64
oscillation clock/128
setting disabled
setting disabled
setting disabled
0
0
0
0
1
DC12
1
1
1
DC11
0
0
1
1
0
0
1
1
DC10
0
1
0
1
0
1
0
1
Step-up circuit 2
step-up frequency
oscillation clock/16
oscillation clock/32
oscillation clock/64
oscillation clock/128
oscillation clock/256
setting disabled
setting disabled
setting disabled
Preliminary