DIA1412

Version 1.0, Jul 2024

www.dioo.com

© 2024 DIOO MICROCIRCUITS CO., LTD.

16

13h

R/W

External channel

High Limit low byte

Stores the fractional data of the High Limit for external channel

00h

14h

R/W

External channel

Low Limit low byte

Stores the fractional data of the Low Limit for external channel

00h

19h

R/W

External channel

Therm Limit

Stores the 8-bit temperature thermal limit for external channel

55h

(85°C)

1Bh

R-C

External fault

Stores status bits indicating which external channel(s) detected a

fault

00h

1Fh

R/W

Channel mask

Controls the masking of individual channels

00h

20h

R/W

Internal Therm Limit

Stores the 8-bit temperature thermal limit for the internal BJT

55h

(85°C)

21h

R/W

Therm Hysteresis

Stores the 8-bit hysteresis value that applies to all Therm Limit

0Ah

(10°C)

22h

R/W

Consecutive ALERT

Controls the number of out-of-limit conditions that must occur before

an interrupt is asserted

70h

25h

R/W

External channel beta

configuration

Stores the beta compensation circuitry settings for external channel

08h

27h

R/W

External channel

ideality factor

Stores the ideality factor for external channel

12h

(1.008)

29h

R

Internal data low byte

Stores the fractional data for the internal BJT

00h

35h

R-C

High Limit status

Status bits for the High Limit

00h

36h

R-C

Low Limit status

Status bits for the Low Limit

00h

37h

R

Therm Limit status

Status bits for the Therm Limit

00h

FDh

R

Product ID (DIA1412)

Stores a fixed value that identifies the device

B3h

FEh

R

Manufacturer ID

Stores a fixed value that identifies DIOO

DAh

FFh

R

Revision

Stores a fixed value that represents the revision number

05h

Note: R = Read, W = Write, R-C = Read then Clear.

12.1. Temperature data register

The measured temperatures of all channels are stored as a 12-bit value with the high byte representing the

integer data and the low byte representing the fractional data as shown in the following register table.

It should be noted that when any channel’s temperature high byte register is read, the corresponding low byte is

copied into an internal “shadow” register. The user is free to read the low byte at any time. No matter the low

byte is read or not, reading from the same high byte register again will automatically refresh this stored low byte

data.