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AS8515 Datenblatt(PDF) 26 Page - ams AG

Teilenummer AS8515
Bauteilbeschribung  Data Acquisition System with Power Management and LIN Transceiver for 12V Battery Sensor Applications
PDF  65 Pages
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Hersteller  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS8515 Datenblatt(HTML) 26 Page - ams AG

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Revision 0.7
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AS8515
Datasheet - AS8515 To p Die Overview
7.17.1 Tx Timeout Watchdog
7.17.2 Temperature Limiter
7.18 Top Die Registers
The serial interface can be used for communication between AS8515 and an external microcontroller. The device is only a slave and the
microcontroller has to initiate the communication. The device can be configured by writing into the control registers and the diagnostic
information can be read out from the diagnostic registers. Pin CST is used as chip select for SPI communication.
A total of 32 registers, each of 8-bits which include configuration, diagnostic, and backup are available. The registers can be accessed using the
4-wire serial interface. Table 28 provides a description of all AS8515
Top die registers.
Table 26. Tx Timeout Watchdog
Symbol
Parameter
Conditions
Min
Typ
Max
Units
tlin_wdog
Timeout period for the dominant state
0.5
1
2
s
Table 27. Temperature Limiter
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Tsd
Shut down temperature
Junction temperature
155
170
185
ºC
Totset
Over-temperature warning
142
157
172
ºC
Tret
Return temperature
125
140
155
ºC
Table 28. AS8515 Top Die Registers
Address Register Name Default Value
R/W
Description
Configuration and Control Registers
0x00
Reserved
0x01
Reserved
0x02
Reserved
0x03
Device
Configuration
Register
On POR_VCC
0000_1100
R/W
D0 Reserved
D1 Voltage Attenuator Enable Bit.
0 Disabled, 1 Enabled
D2 Enable/Disable Over Temperature Monitor
0 Disabled, 1 Enabled
D3 Enable/Disable LIN Transceiver
0 Disabled, 1 Enabled
D4 Reserved
D5-D7 Reserved
0x04
Device Control
Register
On POR_VSUP
0000_0001
R/W
D0 High-slew / Low-slew control
1 High-slew, 0 Low-slew
D1-D7 Reserved
0x05
Temporary
Shutdown
Register
On POR_VCC
0000_0000
R/W
D0 Temporary shutdown control bit
1 Enter temporary shutdown
D1-D7 Reserved
0x06
Window Watch
Dog Trigger
Register
On POR_VCC
0000_0000
W
D0 Window Watchdog trigger bit
D1 Timeout Watchdog trigger bit
Upon a trigger, the bit will be cleared within 2 internal clock cycles.
D2-D7 Reserved
0x07
Reserved
0x0A
Reserved
0x0B
Reserved



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