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L99PM62XP Datasheet(PDF) 69 Page - STMicroelectronics

Part # L99PM62XP
Description  Power management IC with LIN and high speed CAN
PDF  98 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L99PM62XP Datasheet(HTML) 69 Page - STMicroelectronics

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L99PM62XP
ST SPI
Doc ID 16363 Rev 3
69/98
6.1.5
Address mapping
The RAM memory area consists of 16 bit registers.
For the device information (ROM memory area) the eight most significant bits of the memory
cell are used. The remaining 8 are zero.
All unused RAM and ROM addresses is read as ‘0’.
Note:
1
The register definition for RAM address 00H is unused. A register value of all 0 must cause
the device to enter a fail-safe state (interpreted as ‘SDI stuck to GND’ failure).
2
ROM address 3FH is unused. An attempt to access this address must be recognized as a
communication error (‘SDI stuck to VCC’ failure) and must cause the device to enter a fail-
safe state.
6.1.6
Write operation
The write operation starts with a command byte followed by 2 data bytes. The number of
data bytes is specified in the
<SPI-frame-ID>.
Write command format
Table 45.
Address mapping
RAM
adress
Description
Access
ROM
adress
Description
Access
3FH
<Configuration>
R/W
3FH
Reserved
N/A
13H
Status register 3
R
3EH
<SPI frame ID>
R
12H
Status register 2
R
11H
Status register 1
R
…
Unused
N/A
06H
Control register 6
R/W
03H
<product code 2>
N/A
05H
Control register 5
R/W
04H
Control register 4
R/W
02H
<product code 1>
R
03H
Control register 3
R/W
02H
Control register 2
R/W
01H
<silicon version>
R
01H
Control register 1
R/W
00H
Reserved
R/W
00H
<ID Header>
R
Table 46.
Write command format: command byte
MSB
LSB
Op Code
Address
0
0
A5
A4
A3
A2
A1
A0



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