Datasheet

Atmel AT30TSE002B [DATASHEET]

8711G–SEEPR–5/12

11.7 Temperature Register (16-bit Read-only, Address = 05h)

The Temperature Register holds the internal temperature measurement data represented in 11-bit twos complement

word format allowing for resolution equal to 0.125°C (least significant bit). The upper three bits (15, 14, and 13) of the

temperature register indicates the trip status of the current temperature and most important, are not affected by the

status of the output of the

EVENT pin (See Table 11-13 and Table 11-14).

Table 11-13. Temperature Register Bit Distribution

Table 11-14. Temperature Register Bit Description

Bit 15 14 13 12 11 10 9 8

Symbol CRITHIGH ALMHIGH ALMLOW SIGN 128°C 64°C 32°C 16°C

Default Value 0 0 0 0 0 0 0 0

R / W access R R R R R R R R

Bit 7 6 5 4 3 2 1 0

Symbol 8°C 4°C 2°C 1°C 0.5°C 0.25°C 0.125°C RFU

Default Value 0 0 0 0 0 0 0 0

R / W access R R R R R R R R

Bit Symbol Description

15 CRITHIGH

0 = Ambient temperature is less than the Critical Alarm Trip Register setting.

1 = Ambient temperature is greater than or equal to Critical Alarm Trip Register setting.

When this bit is set one, it will automatically clear once the measured temperature decreases below

or is equal to the trip point minus any hysteresis set.

14 ALMHIGH

0 = Ambient temperature is below the Upper Alarm Trip register setting.

1 = Ambient temperature is above the Upper Alarm Trip register setting.

When the bit is set one, it will automatically clear once the measured temperature decreases below

or is equal to the trip point minus any hysteresis set.

13 ALMLOW

0 = Ambient temperature is above the Lower Alarm Trip register setting.

1 = Ambient temperature is below the Lower Alarm Trip register setting.

When the bit is set one, it will automatically clear once the measured temperature increases above or

is to equal to the trip point.

12 SIGN

Sign bit:

0 = Ambient temperature is greater than or equal to 0°C.

1 = Ambient temperature is less than 0°C.

11:1 TEMP

Ambient Temperature bits:

Represented in twos complement format.

The encoding of bits B11 through B2 is the same as in the Alarm Trip Registers.

0 RFU Reserved for Future Use. Read as zero.