hd66789 Renesas Electronics Corporation., hd66789 Datasheet - Page 150

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hd66789

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.
Datasheet
HD66789
5.
6.
7.
8.
9.
10. Applies to the internal oscillator operations using external oscillation resistor Rf (figure and table).
Rev.0.12, May 09 2003, page 150 of 156
This excludes the current flowing through output drive MOSs. This excludes the current flowing
through the input/output units. The input level must be fixed high or low because through current
increases if the CMOS input is left floating. Even if the CS pin is low or high when an access with the
interface pin is not performed, current consumption does not change.
The following figure shows the relationship between the operation frequency and current consumption.
This is a voltage difference for the neighboring outputs under the same display condition. The output
voltage deviation is a reference value.
The fluctuation of average output voltage indicates the difference of average output voltage between
chips. The average output voltage is an average voltage within a chip under the same display
condition.
Applies to the external clock input (figure ).
Oscillator
200
600
400
R-C, oscillation frequencies: fosc (kHz)
0
100
Open
2kΩ
200
T.B.D.
300
Vcc = 3V
T.B.D.
OSC1
OSC2
T.B.D.
400
typ.
500
0.7Vcc
0.5Vcc
0.3Vcc
600
t
rcp
440
420
400
380
360
340
320
Th
(
0
t
fc p
Vcc = 3V, DDVDH = 5,5V
Tl
4.0
Duty =
VDH (V)
typ.
4.5
Th + Tl
Th
5.0
Preliminary
x
100%

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