AS39513 datasheet(25/108 Pages) AMSCO

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[v1-10] 2018-Apr-25

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AS39513 − Detailed Description

Data Log Functions

The AS39513 device supports various flexible data log formats.

The data log format depends on the Logging form. The data log

formats are defined in Figure below. The Logging form is set

with the logging mode LOGMD[1:0] System parameter stored

in the Logging Control Parameters address 0x43B (bits 4-5) in

the EEPROM.

Figure 13:

Supported Logging Formats

Storage Mode

The storage mode defines what happens when the logging area

in the EEPROM is full.

The storage mode is set with the storage mode STRMD System

parameter, stored in the Logging Control Parameters address

0x40E (bit 6) in the EEPROM.

Figure 14:

Storage Mode

Bit 5

Bit 4

Logging Form

Description

Dense

Logging will occur for all logging events. No measurement count or

real-time clock values will be logged.

Interrupt

Interrupt mode. Logging will occur for all logging events. Sensors are

always logged to 10-bit accuracy. The real-time clock value and

interrupt source are logged.

The interrupt source is a two-bit value:

2’b01 = external sensor interrupt, and 2’b10 = DIN interrupt.

Normal limit

Enable logging if any of the limit check conditions are met. Sensors are

always logged to 10-bit accuracy. If a measurement is logged, the value

of the measurement counter is also logged.

Limit crossing

Enable logging only if one of the limit check conditions is different

than that from the previous logging event. Sensors are always logged

to 10-bit accuracy. If a measurement is logged, the value of the

measurement counter is also logged.

Bit

Storage Mode

Description

0Normal

When the logging area in the EEPROM is full, the chip does not store any

new sensor data to the EEPROM, additional logging values will be lost.

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