SA8803
6. Test feature
If the TEST pin is pulled low, the status of all 24 LED's are output at pin DOUT in
3 groups of 8 status bits each, with a start bit and a stop bit added. The data rate
of this status word is equal to the input data rate (i.e. CLK) devided by 8.
The three data word that are serially output at DOUT each contain 11-bit. This
means that bit 10 is not used in each case. The words therefore contain a start bit,
8 LED status bits (1 for off, 0 for on). 1 unused bit, and a stop bit. The three groups
are output consecutively in the following order: first LED's 1 to 8, then 9 to 16, and
then 17 to 24.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VDD
-0.30 V to +5.50 V
0.30 V to -5.50 V
-0.30 V to (VDD +0.30) V
± 10 mA
Supply Voltage, VEE
Input or Output Voltage
DC Forward Bias Current, Input or Output
Storage Temperature (Plastic)
Operating Temperature
-40 to 125°C
0° - 70°
Note 1: Referenced to GND. Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. This is a stress rating only and
functional operation of the device at these or any other conditions above those indicated
in the operation sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may effect the device reliability.
ELECTRICAL CHARACTERISTICS
DC Electrical Characteristics Across Temperature Range (Note 1)
Symbol
Parameter
Condition
Min
Typ
Max Unit
TTL INTERFACE
VIL
VIH
VOL
VOH
Low Level
Input Voltage
High Level
Input Voltage
Low Level
Ouput Voltage
High Level
0.8
0.4
V
V
V
V
2.0
2.4
IOL ≤ 4mA
0.1
4.5
IOH ≤ 4 mA
Output Voltage
7/10
sames
SAMES [ SAMES ]
