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Condition
Each detector
restart formation
VBAT Low voltage
1
VCC Low voltage
VCC High voltage
VBAT Low voltage
2
VCC Low voltage
VCC High voltage
VBAT Low voltage
3
VCC Low voltage
VCC High voltage
VBAT Low voltage
4
VCC Low voltage
VCC High voltage
VBAT Low voltage
When at least one
condition continues the
5
VCC Low voltage
state where it does not
detect
VCC High voltage
Notes of Table 7.10-6
* "○" means normal value (undetected state), and "-" means that a test is not performed.
* In the case of 5, three detection circuits continue waiting until being normal value (undetected state).
When it becomes normal value, diagnosis operation starts at that timing, and end the restart diagnosis
for about 48 μs.
* It does not operate with voltage less than the VCC undervoltage POR detection voltage.
Initial diagnostic
The state where it does
not detect Test 1
(Normal threshold)
conditions
○
○
○
○
○
○
○
In the case of NG,
○
it is also at any 1
conditions.
○
○
○
○
○
○
○
○
○
○
○
○
○
－
－
－
Table 7.10-6 Summary of diagnostic restart operation
The state where it does
The state where it does
not detect Test 2
not detect Test 3
(A threshold is changed)
(Normal threshold)
○
○
○
○
○
○
○
○
○
○
○
○
○
In the case of NG,
it is also at any 1
○
conditions.
○
○
In the case of NG,
○
it is also at any 1
conditions.
○
－
－
－
－
－
－
32 / 49
TB9051FTG
Under diagnostic
After termination
operation
of a restart
Diagnostic
result
DIAG
OUT1/2
DIAG
OUT1/2
PIN
PIN
PIN
Output
Normal
L
High-z
H
Function
Output
Abnormal
L
High-z
L
Function
Output
Abnormal
L
High-z
L
Function
Output
Abnormal
L
High-z
L
Function
Abnormal
L
High-z
L
High-z
Ver.1.1 2019-03-14
Memo
PIN
It does not restart.
It becomes an unusual
function of Table 7.1-2.
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