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AS39513 Fiches technique(PDF) 40 Page - ams AG

No de pièce AS39513
Description  NFC Sensor Tag and Data Logger IC
PDF  108 Pages
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Fabricant  AMSCO [ams AG]
Site Internet  http://www.ams.com
Logo AMSCO - ams AG

AS39513 Fiches technique(HTML) 40 Page - ams AG

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[v1-10] 2018-Apr-25
AS39513 − Detailed Description
GPIO
When the SPI is not used (CE open or low), the DIN and DOUT
pins can be used as general purpose IOs (unless the SPI direct
command “Set IO Mode” has locked the device in SPI mode).
The functions of the DIN can be programmed as follows
according to the System parameter DIMD[1:0] stored in the
“Logging Control Parameters” address 0x439 (bits 1- 0) in the
EEPROM:
Figure 28:
DIN Functional Options (GPIO)
Bit 1
Bit 0
I/O
Structure
Function
0
0
Input
Pull-down
CMOS input, non-inverting 100k ohm pull down to ground
enabled.
0
1
Input
Pull-up
Pull-up current is supplied to DIN only during a logging event.
1
0
Input
Pull-up
When in the WAIT state, a pull-up current is supplied to DIN. A
falling edge on DIN manually causes a transition from WAIT
mode to ACTIVE mode. If TMSRT is also 1, the event that happens
first (delay or DIN input) causes the transition from WAIT mode
to ACTIVE mode.
1
1
Input
Pull-up
During ACTIVE mode, a pull-up current is supplied to DIN. A
falling edge on DIN generates a logging event.



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