TV04A171JB-G Comchip Technology, TV04A171JB-G Datasheet - Page 21

• Manufacturer Part Number: TV04A171JB-G
• Description: TVS 400W 170V BIDIRECT SMA
• Manufacturer: Comchip Technology

Specifications of TV04A171JB-G

• Voltage - Reverse Standoff (typ): 170V
• Voltage - Breakdown: 189V
• Power (watts): 400W
• Polarization: Bidirectional
• Mounting Type: Surface Mount
• Package / Case: DO-214AC, SMA
• Channels: 1 Channel
• Clamping Voltage: 275 V
• Operating Voltage: 3.5 V
• Breakdown Voltage: 189 V
• Peak Surge Current: 40 A
• Peak Pulse Power Dissipation: 400 W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.11
February 23, 2010 S29AL008J_00_09
Temporary Sector Group Unprotect
This feature allows temporary unprotection of previously protected sector groups to change data in-system.
The Sector Group Unprotect mode is activated by setting the RESET# pin to V
protected sector groups can be programmed or erased by selecting the sector addresses. Once V
removed from the RESET# pin, all the previously protected sector groups are protected again.
shows the algorithm, and
Notes
1. All protected sector groups unprotected. (If WP# = V
2. All previously protected sector groups are protected once again.
the top or bottom two address sectors remains protected for boot sector devices).
D a t a
Figure 7.1 Temporary Sector Group Unprotect Operation
Figure 17.11 on page 48
S h e e t
S29AL008J
IL
Temporary Sector Group
, the highest or lowest address sector remains protected for uniform sector devices;
Unprotect Completed
Program Operations
Perform Erase or
RESET# = V
RESET# = V
shows the timing diagrams, for this feature.
(Note 1)
(Note 2)
START
ID
IH
ID
. During this mode, formerly
Figure 7.1
ID
is
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