Datasheet

AT30TSE004A [DATASHEET]
Atmel-8868C-DTS-AT30TSE004A-Datasheet_122013
18
6.2.4 Upper Limit Register (16-bit Read/Write, Address = 02h)
The Upper Limit Register holds the user programmed upper temperature boundary trip point in 2’s complement
format (0.125C resolution) that can be utilized to monitor the temperature in an operating window between the
Upper Limit Register and the Lower Limit Register settings (see Table 6-7 and Table 6-9). When the
temperature increases above this trip point, drops below, or is equal to the trip point (minus any hysteresis set),
then the EVENT pin is asserted (if enabled). This register is read-only if the Alarm Window Lock (WINLOCK) bit
six in the Configuration Register is set to a Logic 1.
Table 6-7. Upper Limit Register Bit Distribution
Table 6-8. Upper Limit Register Bit Description
Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8
Symbol RFU SIGN ALMWINH
Default Value 0 0 0 0 0 0 0 0
R/W Access R R R R/W R/W R/W R/W R/W
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Symbol ALMWINH RFU
Default Value 0 0 0 0 0 0 0 0
R/W Access R/W R/W R/W R/W R/W R/W R R
Bit Symbol Description
15:13 RFU Reserved for Future Use. Read as Logic 0.
12 SIGN
Sign bit:
0 = The temperature is greater than or equal to 0°C.
1= The temperature is less than 0°C.
11:2 ALMWINH
Upper Limit temperature bits:
Represented in 2’s complement format.
Read-only access if Alarm Window is locked (Configuration Register bit 6 high).
R/W access if the Alarm Window is unlocked.
0:1 RFU Reserved for Future Use. Read as Logic 0.