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TN0897 Datasheet(PDF) 2 Page - STMicroelectronics

Part # TN0897
Description  The document describes a standardized SPI protocol
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TN0897 Datasheet(HTML) 2 Page - STMicroelectronics

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Contents
TN0897
2/28
Doc ID 023176 Rev 2
Contents
1
General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1
Feature list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2
Signal description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2
SPI communication flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1
General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2
Command byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.1
Operating code definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3
Global status register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.1
Global error flag definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.4
Configuration register (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3
Address mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1
RAM address range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2
ROM address range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4
Write operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1
Write command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2
Format of data shifted out at SDO during write cycle . . . . . . . . . . . . . . . . 18
5
Read operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.1
Read command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.2
Format of data shifted out at SDO during Read cycle . . . . . . . . . . . . . . . 20
6
Read and clear status operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.1
Read and clear status command format . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.2
Format of data shifted out at SDO during read and clear status operation 22
7
Read device information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.1
ID-Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.2
Silicon version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.3
Product code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.4
SPI-Frame-ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24


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