ch7028b Chrontel, ch7028b Datasheet - Page 17

• Manufacturer Part Number: ch7028b
• Description: Chrontel Ch7028b Sdtv Encoder
• Manufacturer: Chrontel

CHRONTEL
3.3
(Operating Conditions: T
Notes:
1.
2.
3.4
Notes:
1.
2. Applies to AS, RESETB and ATPG.
3. Applies to HSO, VSO, CSYNC.
209-1000-001
Symbol
I
I
I
I
I
Symbol
V
V
V
V
V
V
V
V
V
V
I
I
VDD18
VDD33
VDDQ
VDD_MEM
PD
MISCPU
MISCPD
SDOL
SPIH
SPIL
HYS
DATAIH
DATAIL
MISCIH
MISCIL
SYNCOH
SYNCOL
Applies for one DAC and single 75 Ω termination. The current of every DAC is less than 25mA for single termination and
less than 50mA for double termination.
If the chip is not in deep power down mode, the total power down current will be about 6mA. Most of the leakage current is
come from the SDRAM.
Applies to D[17:0], GCLK, H, V and DE. VDDIO is the I/O supply, ranging from 1.2V to 3.3V.
Electrical Characteristics
Digital Inputs / Outputs
(1)
Description
Video D/A Resolution
Full scale output current
Video level error
Total VDD18 supply current (1.8V supplies)
Total VDD33 supply current (3.3V supplies)
Memory data interface supply current
Memory core supply current
Total Power Down Current
Description
SPD (serial port data)
Output Low Voltage
Serial Port (SPC, SPD)
Input High Voltage
Serial Port (SPC, SPD)
Input Low Voltage
Hysteresis of Serial Port
Input
Data I/O
Data I/O Low Voltage
Miscellaneous Input
High Voltage
Miscellaneous Input Low
Voltage
Miscellaneous Output
High Voltage
Miscellaneous Output
Low Voltage
Miscellaneous Input Pull
Up Current
Miscellaneous Input Pull
Down Current
Rev. 1.1,
[2]
A
[1]
= -20°C – 70°C, VDD18=1.8V± 5%, VDD33 =2.5V – 3.5V)
High Voltage
[2]
[3]
[2]
[3]
[2]
08/21/2008
[2]
Test Condition
I
V
V
OL
IN
IN
= 3.0 mA
= 0
= VDD33
[1]
VDDIO/2
VDD33 –
VDD33 x
GND-0.5
GND-0.5
GND-0.5
GND-0.5
+0.25
Min
0.25
1.0
0.5
0.8
0.5
0.1
Min
10
Typ
Typ
<20
0.1
10
38
30
30
20
VDDIO/2-
VDD33 +
VDDIO +
VDD33 +
Max
0.25
0.4
0.5
0.4
0.5
0.5
0.6
0.3
5.0
1.1
Max
CH7028B
10
10
Unit
Units
μA
μA
V
V
V
V
V
V
V
V
V
V
bits
mA
mA
mA
mA
mA
μA
%
17