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L99H92 Datasheet(PDF) 62 Page - STMicroelectronics

Part # L99H92
Description  Half-bridge pre-driver for automotive applications
PDF  77 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L99H92 Datasheet(HTML) 62 Page - STMicroelectronics

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Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Reserved bit
Reserved bit
Reserved bit
Reserved bit
Reserved bit
Reserved bit
Reserved bit
Reserved bit
Bit
Name
Description
15
RES
Reserved
14
RES
13
RES
12
RES
11
RES
10
RES
9
RES
8
RES
Table 65. Watchdog trigger/disable register WDGTRDIS (0x0A) LSB
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Register read access
0 (R)
0 (R)
0 (R)
0 (R)
0 (R)
0 (R)
0 (R)
RES
RES
RES
WDGSTATUS
WDGINF2]
WDGINF[1]
WDGINF[0]
P
Reserved
bit
Reserved bit
Reserved bit
Watchdog status bit
Watchdog information bits
Parity bit
Bit
Name
Description
7
RES
Reserved
6
RES
5
RES
4
WDGSTATUS
Watchdog status bit. This bit is set if the watchdog has been successfully disabled. This bit is reset if the watchdog
is enabled.
3
WDGINF[2]
Watchdog information bits. These bits represent the three least significant bits of the latest write command
performed on the same register. For example, they will return ”101" after first trigger WDGTRDIS[15:1]=5555h,
then ”010" after second trigger WDGR[15:1]=2AAAh.
It will return "”111" after writing the second key WDGR[15:1]=1097h. Since no other SPI transfer should fall
between the two words that form the key during the procedure to disable the watchdog, ”011" shall not be read
after first part of the key write command WDGR[15:1]=2F6Bh, otherwise the disabling procedure will be aborted
generating a watchdog fault.
2
WDGINF[1]
1
WDGINF[0]
0
P
Parity bit
Table 66. Reserved bits RESVDO (0x0B) MSB
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
0 (R/W)
0 (R/W)
0 (R/W)
0 (R/W)
0 (R/W)
0 (R/W)
0 (R/W)
0 (R/W)
RES_RW_14
RES_RW_13
RES_RW_12
RES_RW_11
RES_RW_10
RES_RW_9
RES_RW_8
RES_RW_7
Reserved bit
Reserved bit
Reserved bit
Reserved bit
Reserved bit
Reserved bit
Reserved bit
Reserved bit
Bit
Name
Description
15
RES_RW_14
Reserved
14
RES_RW_13
13
RES_RW_12
12
RES_RW_11
11
RES_RW_10
L99H92
Control registers
DS14069 - Rev 4
page 62/77



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