TV04A171JB-G Comchip Technology, TV04A171JB-G Datasheet - Page 22

• 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

22
Protect Algorithm
Temporary Sector Group
Sector Group
Unprotect Mode
Device failed
Increment
PLSCNT
PLSCNT
= 25?
No
Yes
No
to sector group address
No
sector group address
Verify Sector Group
Set up sector group
Write 60h to sector group
Protect: Write 40h
Figure 7.2 In-System Sector Group Protect/Unprotect Algorithms
Protect complete
Sector Group Protect:
Protect another
RESET# = V
A1 = 1, A0 = 0
A1 = 1, A0 = 0
from RESET#
A3 = A2 = 0,
A3 = A2 = 0,
Sector Group
PLSCNT = 1
Cycle = 60h?
Remove V
Data = 01h?
Wait 150 µs
with A6 = 0,
with A6 = 0,
Write reset
Read from
First Write
command
Wait 1 µs
address
A1 = 1, A0 = 0
START
sector?
address with
A3 = A2 = 0,
A6 = 0,
Yes
Yes
No
ID
ID
Yes
PLSCNT = 1
Reset
S29AL008J
Sector Group Unprotect
unprotected sector groups
of the sector group protect
D a t a
The indicated portion
Protect all sectors:
prior to issuing the
unprotect address
algorithm must be
first sector group
performed for all
Algorithm
Device failed
S h e e t
Increment
PLSCNT
PLSCNT
= 1000?
No
Yes
No
No
sector groupaddress
Verify Sector Group
Unprotect complete
Unprotect: Write
A1 = 1, A0 = 0
Set up first sector
Sector GroupUnprotect:
S29AL008J_00_09 February 23, 2010
A3 = A2 = 0,
A1 = 1, A0 = 0
40h to sector
with A6 = 1,
address with
A3 = A2 = 0,
RESET# = V
Read from
group verified?
from RESET#
group address
Sector Group
PLSCNT = 1
Cycle = 60h?
Write 60h to sector
Remove V
Wait 1.5 ms
Data = 00h?
Write reset
Last sector
First Write
command
All sectors
protected?
A6 = 1,
Wait 1 µs
A1 = 1, A0 = 0
START
address with
A3 = A2 = 0,
A6 = 1,
Yes
Yes
Yes
Yes
ID
ID
No
No
next sector group
Temporary Sector
Group Unprotect
address
Set up
Mode