SA56004X Datasheet, PDF (11/36 Pages) NXP Semiconductors – 1 Degrees Celcious accurate, SMBus-compatible, 8-pin, remote/local digital temperature sensor with over temperature alarms

NXP Semiconductors
SA56004X
Digital temperature sensor with overtemperature alarms
Table 13. TH - T_CRIT hysteresis register
Byte
Single high byte (read/write address 21h)^[1]
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Value
-
-
-
16
8
4
2
1
[1] POR default TH = 0Ah (10 °C).
7.8.7 Programmable offset register (remote only)
Table 14. RTOHB, RTOLB - Remote temperature offset registers
Byte High byte (read/write address 11h)^[1]
Low byte (read/write address 12h)^[2]
Bit
D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0
Value sign 64 32 16 8
4
2
1 0.5 0.25 0.125 0
0
0
0
0
[1] POR default RTOHB = RTOLB = 00h.
[2] POR default RTOLB = 00h.
7.8.8 ALERT mode register (AM)
Table 15. AM - ALERT mode register
Read and write address BFh.
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Value
0
0
0
0
0
0
0
ALERT mode
D[7:1] is not defined and defaults to logic 0.
D0: The ALERT output is in interrupt mode when this bit is LOW. The ALERT output is in
comparator mode when this bit is HIGH.
7.8.9 Other registers
The Manufacturers ID register has a default value A1h (1010 0001) and a read address
FEh.
The Die Revision Code register has a default value 00h (0000 0000) and read address
FFh. This register will increment by 1 every time there is a revision to the die.
7.8.10 One-shot register
The one-shot register is used to initiate a single conversion and comparison cycle when
the device is in the standby mode; upon completion of the single conversion cycle, the
device returns to the standby mode. It is not a data register; it is the write operation that
causes the one-shot conversion. The data written to this register is not stored; an FFh
value will always be read from this register. To initiate a one-shot operation, send a
standard write command with the command byte of 0Fh (One-Shot Write Address).
SA56004X_5
Product data sheet
Rev. 05 — 22 May 2008
© NXP B.V. 2008. All rights reserved.
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