13
Atmel AT30TSE002B [DATASHEET]
8711GSEEPR5/12
11. Register Descriptions
This section describes all the temperature sensor registers that are used in AT30TSE002B. The AT30TSE002B has
several registers that are user accessible and or programmable and used for latching temperature readings, storing high
and low temperature limits, configuring the hysteresis threshold and reporting status.
These registers include the Capability Register, Upper Alarm Trip Register, Lower Alarm Trip Register, Critical Alarm Trip
Register, Temperature Register, Manufacturer Identification Register, Device Identification Register, and SMBus
Register. The AT30TSE002B uses an 8-bit Pointer Register to access these registers and all other registers contain
16-bits.
Table 11-1 indicates the write/read access capability of each register. Reading from a write only register will result in
reading zero data and writing to read-only register will have no impact even though the write sequence was
acknowledged by the device.
Table 11-1. Register Summary
Note: 1. Write operations to reserve registers should be avoided as it may cause undesirable results.
Register
Power-up Default
Register Data (hex)
Address (hex)
Read / Write
Register Name
Section
n/a
W
Address Pointer
11.1
00h
00h
R
Capability
11.2
00F7h
01h
R / W
Configuration
11.3
0000h
02h
R / W
Upper Alarm Trip
11.4
0000h
03h
R / W
Lower Alarm Trip
11.5
0000h
04h
R / W
Critical Alarm Trip
11.6
0000h
05h
R
Temperature Data
11.7
n/a
06h
R
Manufacturer I.D.
11.8
001Fh
07h
R
Device I.D. / Device Revision
11.9
8201h
08h to 21h
R / W
Reserved
(1)
n/a
0000h
22h
R / W
SMBus Timeout
11.10
0000h
23h to FFh
R / W
Reserved
(1)
n/a
0000h
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