White Electronic Designs
WED7GxxxIDE36
WED7GxxxIDE33
PRELIMINARY*
FIG. 2: POWER LOSS WITH POWER FAILURE PROTECTION CIRCUIT
Power Loss
Data Transmitted
Sector n
Sector n+1
Sector n+2
External V
CC
Valin V
CC
Threshold
Internal V
CC
Data Received
Sector n
Sector n+1
Data Written
n
n+1
t
SW
Note: t
BACKUP
> t
SW
t
BACKUP
ENVIRONMENTAL SPECIFICATIONS
Temperature
Humidity
Acoustic Noise
Altitude (relative to sea level)
Operating
Non-Operating
Operating
Non-Operating
Operating
Non-Operating
0° C to 70° C
-25° C to 85° C
8% to 95 %, non-condensing
8% to 95 %, non-condensing
0 dB
80,000 feet maximum
POWER REQUIREMENTS
3.3 V
DC Input Voltage (V
CC
)
100 mV max. ripple (p-p)
See Notes
Sleep
Reading
Writing
Read/Write Peak
3.3V +/- 5%
200 µA
21 mA
24 mA
150 mA/50 µs
5V
5V +/- 10%
500 µA
34 mA
34 mA
150 mA/50 µs
Notes:
All values quoted are typical at ambient temperatures and nominal supply voltage unless otherwise stated.
Sleep mode current is specified under the condition that all inputs are at static CMOS levels and in a “Not
Busy” operating state.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
July, 2003
Rev. 0
6
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
