Power; Power Reset Limits - Maxtor ATLAS 10K III Product Manual

   2 1 9 ' 4
The Maxtor Atlas 10K III hard disk drive operates from two supply voltages:
+12 V
+5 V
+12 V
+5 V
     2 Q Y G T 5 G S W G P E K P I
You may apply the power in any order or manner, or open either the power or
power return line with no loss of data or damage to the disk drive. However,
data may be lost in the sector being written at the time of power loss. The drive
can withstand transient voltages of +10% to –100% from nominal while
powering up or down.
     2 Q Y G T 4 G U G V . K O K V U
When powering up, the drive remains reset (inactive) until both rising Voltage
thresholds reset limits are exceeded for 100 ms. When powering down, the drive
resets immediately when either supply voltage drops below the falling voltage
threshold.
Allowable ripple and noise for each voltage:
800 mV p-p (100 Hz to 8 KHz)
250 mV p-p (8 KHz to 20MHz)
T a b l e 4 - 4 Power Reset Limits
+5 V
+12 V
±10%
±5%
250 mVp-p
1
V =
T h r e s h o l d
4.175V typical
4.0V minimum
4.35V maximum
V =
T h r e s h o l d
9.5V typical
9.0V minimum
10.0V maximum
Maxtor Atlas 10K III
Specifications
4-5