upd161608 Renesas Electronics Corporation., upd161608 Datasheet - Page 36

• Manufacturer Part Number: upd161608
• Description: 176-rgb X 220-dot 1-chip Driver Ic For 262,144-color Tft-lcd Display
• Manufacturer: Renesas Electronics Corporation.

13.5 Power Supply Control 1 (R03H)
DCT3-DCT0: Set the step-up cycle of the step-up circuit for 8-color mode (CM = V
36
Caution When DCTn setting is changed to F line x n (DCT3-DCT0 = 0000 to 1001), the change of the setting is
R/W
W
updated following 2 cases.
1. Power up sequence using SHUT pin
2. From the head of the frame immediately after changing the level of CM pin
RS
1
the driving ability of the step-up circuit increases, but its current consumption increases as well. Adjust the
cycle taking into account the display quality and power consumption.
Remark F line: Horizontal frequency (f
DCT3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
DCT3
IB15 IB14 IB13 IB12 IB11 IB10
f
OSC
DCT2
DCT2 DCT1 DCT0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
: DOTCLK frequency (f
DCT1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
DCT0
BT2
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Data Sheet S17594EJ2V0DS
DOTCLK
BT1
H
TYP. 13.5 kHz)
BT0
TYP. 2.64 MHz)
IB9
IB8
0
DC3
IB7
Step-up Cycle
F line x 14
F line x 11
F line x 9
F line x 7
F line x 6
F line x 5
F line x 4
F line x 3
F line x 2
F line x 1
DC2
IB6
f
f
f
f
f
f
OSC
OSC
OSC
OSC
OSC
OSC
/24
/40
/48
/56
/64
/80
DC1 DC0
IB5
DDIO
). When the cycle is accelerated,
IB4
IB3
AP2 AP1
IB2
μ
PD161608
IB1
AP0
IB0
0