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L99PM60J Datasheet(PDF) 51 Page - STMicroelectronics

Part # L99PM60J
Description  Power management IC with LIN transceiver
PDF  75 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L99PM60J Datasheet(HTML) 51 Page - STMicroelectronics

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L99PM60J
ST SPI
Doc ID 18309 Rev 6
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7.1.6
Address mapping
The RAM memory area consists of 8 bit registers.
For the device information (ROM memory area) the eight bits of the memory cell are used.
All unused RAM and ROM addresses are 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 failsafe 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
failsafe state.
7.1.7
Write operation
The write operation starts with a Command Byte followed by 1 data byte.
Table 39.
Addressing mapping
RAM
Address
Description
Access
ROM
Address
Description
Access
3FH
<Configuration>
R/W
3FH
Reserved
N/A
14H
Status register 4
R
3EH
<SPI frame ID>
Includes frame width and availability of
watchdog
R
13H
Status register 3
R
12H
Status register 2
R
…
Unused
N/A
11H
Status register 1
R
03H
<product code 2>
Unique product identifier
N/A
02H
Control register 2
R/W
01H
Control register 1
R/W
02H
<product code 1>
Unique product identifier
R
00H
Reserved
R/W
01H
<silicon version>
Indicates Design Version
R
00H
<ID Header>
Device family, max address of device
information
R
Table 40.
Write command format
MSB
LSB
Command byte
Op Code
Address
0
0
A5
A4
A3
A2
A1
A0
Data byte
D7
D6
D5
D4
D3
D2
D1
D0



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