L5953_07 STMICROELECTRONICS [STMicroelectronics], L5953_07 Datasheet - Page 21

• Manufacturer Part Number: L5953_07
• Description: Multiple switching voltage regulator
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

L5953
5
5.1
5.2
Note:
5.3
5.4
5.5
5.6
Summary of the main operations
Operation A
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Operation B
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An operation B must follow an operation A. The delay between the end of the operations A
to the start of the operations B must be longer than 100
Operation C
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Operation D
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Operation E
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Operation F
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Test mode diagnostic procedure start
1) WREN instruction
2) WSTA instruction
Read the diagnostic register
Case1: after a test mode diagnostic procedure start
1) RDIA instruction
2) Diagnostic register output
1) WREN instruction
2) WSTA instruction
Read the status register
1) RSTA instruction
2) Status Register output
Diagnostic procedure start
1) WREN instruction
2) WSTA instruction
Read the diagnostic register
Case 2: after a diagnostic procedure start
1) RDIA instruction
2) Diagnostic register output
An operation F must follow an operation E, if the IRQ pin is not activated. The delay
between Operation E and Operation F must be longer than 100μs. To be recognized, the
fault must be present without interruptions, during all the delays mentioned. After an
Operation F, the bit s0 of the status register is reset (0)
Write the status register
(Figure
(Figure
(Figure
(Figure
(Figure
(Figure
(Figure
(Figure
(Figure
(Figure
15.)
17.)
19.)
14.)
18.)
16.)
13.)
(Figure
13.)
13.)
(Figure
19.)
15.)
17.)
μ
Summary of the main operations
S
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