SL900A-ASWB datasheet(49/90 Pages) AMSCO

49 / 90 page

ams Datasheet: 2014-May-06 [v1-01]

SL900A – 49

SPI Dir e c t C o mmand s

Figure 40:

SPI Direct Commands

Command Code

Command

Comment

0x00

Reset command - same

effect as POR

All calibration registers are refreshed from the EEPROM

0x01

Get temperature

After SDATAO signal goes high send additional 16 clock

pulses for conversion data read-out

0x02

Get battery

After SDATAO signal goes high send additional 16 clock

pulses for conversion data read-out

0x03

Get Ext. sensor 1

After SDATAO signal goes high send additional 16 clock

pulses for conversion data read-out

0x04

Get Ext. sensor 2

After SDATAO signal goes high send additional 16 clock

pulses for conversion data read-out

0x05

Start Logging

Starts the timer or IRQ mode - generates the sta_log

pulse signal - the start time has to be written before with

the SPI Write mode

0x06

Stop Logging

Stops the timer or IRQ mode - generates the end_log

pulse signal

0x07

Read FIFO status

Read the FIFO status byte (8-bit)

0x08

Read Remaining shelf life

Reads the remaining shelf life (24-bit)

0x20

Read FIFO

Reads up to 8 bytes from the FIFO

0x21

Write FIFO

Writes up to 8 bytes to the FIFO

SPI Direct Commands

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