6004A View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
Manufacturer
6004A Datasheet PDF : 36 Pages
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NXP Semiconductors
SA56004X
Digital temperature sensor with overtemperature alarms
Table 4. Register assignments
Register
name
Command byte
Read
Write
address address
LTHB
00h
n/a
RTHB
01h
n/a
SR
02h
n/a
CON
03h
09h
CR
04h
0Ah
LHS
05h
0Bh
LLS
06h
0Ch
RHSHB 07h
0Dh
RLSHB 08h
0Eh
One Shot n/a
0Fh
RTLB
10h
n/a
RTOHB 11h
11h
RTOLB
12h
12h
RHSLB 13h
13h
RLSLB
14h
14h
RCS
19h
19h
LCS
20h
20h
TH
21h
21h
ATLB
22h
n/a
AM
BFh
BFh
RMID
FEh
n/a
RDR
FFh
n/a
POR state
0000 0000
0000 0000
0000 0000
0000 0000
1000
0100 0110
0000 0000
0100 0110
0000 0000
-
0000 00
0000 0000
000
000
000
0101 0101
0101 0101
0 1010
0000 0000
0
1010 0001
0000 0000
Function
Bits
Access
local temperature high byte
8
R
remote temperature high byte
8
R
status register
8
R
configuration register
8
R/W
conversion rate
4
R/W
local high setpoint
8
R/W
local low setpoint
8
R/W
remote high setpoint high byte
8
R/W
remote low setpoint high byte
8
R/W
writing register initiates a one shot conversion 0
W
remote temperature low byte
6 (MSBs) R
remote temperature offset high byte
8
R/W
remote temperature offset low byte
3 (MSBs) R/W
remote high setpoint low byte
3 (MSBs) R/W
remote low setpoint low byte
3 (MSBs) R/W
remote T_CRIT setpoint
8
R/W
local T_CRIT setpoint
8
R/W
T_CRIT hysteresis
5
R/W
local temperature low byte
3 (MSBs) R
Alert mode
1
R/W
read manufacturer’s ID
8
R
read stepping or die revision
8
R
7.4 Power-on reset
When power is applied to the SA56004X, the device will enter into its Power-On Reset
(POR) state and its registers are reset to their default values. The configuration, status,
and temperature-reading registers remain in these states until after the first conversion.
As shown in Table 4 this results in:
1. Command register set to 00h.
2. Local Temperature register (LTHB and LTLB) set to 0 °C.
3. Remote Diode Temperature register (RTHB and RTLB) set to 0 °C until the end of the
first conversion.
4. Status register (SR) set to 00h.
5. Configuration register (CON) set to 00h; interrupt latches are cleared, the ALERT and
T_CRIT output drivers are off and the ALERT and T_CRIT pins are pulled HIGH by
the external pull-up resistors.
6. Local T_CRIT temperature setpoints (LCS) and Remote T_CRIT temperature
setpoints (RCS) at 85 °C.
7. Local HIGH setpoint (LHS) and remote HIGH temperature setpoint (RHSHB) at 70 °C.
SA56004X_5
Product data sheet
Rev. 05 — 22 May 2008
© NXP B.V. 2008. All rights reserved.
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