AS1542-BTSU ams, AS1542-BTSU Datasheet - Page 19

• Manufacturer Part Number: AS1542-BTSU
• Description: Analog to Digital Converters - ADC
• Manufacturer: ams

Specifications of AS1542-BTSU

• Rohs: yes
• Number Of Channels: 16/8
• Architecture: SAR
• Conversion Rate: 1 MSPs
• Resolution: 12 bit
• Input Type: Single-Ended/Differential
• Snr: 71 dB
• Interface Type: QSPI, SPI
• Operating Supply Voltage: 2.7 V to 5.25 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-28
• Maximum Power Dissipation: 18.4 mW
• Minimum Operating Temperature: - 40 C
• Number Of Converters: 1

AS1542
Data Sheet - D e t a i l e d D e s c r i p t i o n
Shadow Register Conversion (SEQ = 0, SHADOW = 1)
Figure 29
this mode of operation and revert back to the normal mode of operation of a multi-channel ADC (as outlined in
Figure
Note: If all 0s are written into the Shadow Register
Figure 29. Bit SEQ = 0, Bit SHADOW = 1 Flowchart
www.austriamicrosystems.com
Exit this flow whenever WRITE = 1 and NOT (SEQ = 1, SHADOW = 0)
CSN Falling
Edge
28), verify bit
CSN Falling
shows how to program the AS1542 to continuously convert from a particular sequence of channels. To exit
Edge
Bit WRITE = 0
CSN Falling
previously selected ADDR3:ADDR0
Edge
Continuously Convert the selected
WRITE (page 14)
DOUT: Conversion Result from
sequence of Channels
DOUT: Conversion Result from previously selected ADDR3:ADDR0 Channel;
Channel
DIN: Write to Shadow Register
Select Channel ADDR3:ADDR0
Bit WRITE = 0
= 1 and bits SEQ and SHADOW = 0 on the next serial transfer.
DOUT: Dummy Conversion Result
Selecting Channels for Conversion*
Select Coding, Range, SE/FDN,
WEAK/TRIN and Power Mode;
DIN: Write to Control Register;
Bit SEQ = 0, Bit SHADOW = 1
page 14)
Bit WRITE = 1;
CSN Falling
Bit SHADOW = 0
Bit WRITE = 1
Bit WRITE = 0
Power On
Edge
Bit SEQ = 1
for Conversion
(see Table 11 on page 18)
Revision 1.00
(see Table 11 on page 18)
(see Table 5 on
Bit WRITE = 1, Bit SEQ = 1, Bit SHADOW = 0
previously selected ADDR3:ADDR0 Chan-
sequence of Channels and allow Changes
to Control Register without Conversion
Continuously Convert the selected
DOUT: Conversion Result from
Interruption
channel 15 will be chosen by default.
nel
* Need not be consecutive channels.
Bit SHADOW = 0
Bit WRITE = 1
Bit SEQ = 1,
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