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L9788 Datasheet(PDF) 53 Page - STMicroelectronics

Part # L9788
Description  Multifunction IC for automotive engine management system
PDF  264 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9788 Datasheet(HTML) 53 Page - STMicroelectronics

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DS12308 Rev 4
53/264
L9788
Watchdog
263
4.1.6
Reset behaviour
All monitoring module registers are reset by RST_UV. The following monitoring module
components are also reset by RST_PRL (internal partial reset).
RST_PRL is active when at least one of the following signals is active: RSTN or SW_RST.
Table 21. Question and answer
question REQU (3-0)
RESP_BYTE3
RESP_BYTE2
RESP_BYTE1
RESP_BYTE0
0FF
0F
F0
00
1B0
40
BF
4F
2E9
19
E6
16
3A6
56
A9
59
475
85
7A
8A
53A
CA
35
C5
663
93
6C
9C
72C
DC
23
D3
8D2
22
DD
2D
99D
6D
92
62
AC4
34
CB
3B
B8B
7B
84
74
C58
A8
57
A7
D17
E7
18
E8
E4E
BE
41
B1
F01
F1
0E
FE
Table 22. Watchdog reset behaviour
Component
Reset Condition
ERROR COUNTER
110b
Register for “EC>7”
‘0’
Register RESPTIME
Maximum value:0011 1111b



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