SA56004AD NXP Semiconductors, SA56004AD Datasheet - Page 15

• Manufacturer Part Number: SA56004AD
• Description: Board Mount Temperature Sensors I2C LOC +/- 2OC AND REM +/- 1OC TS
• Manufacturer: NXP Semiconductors

Specifications of SA56004AD

• Full Temp Accuracy: +/- 1 C, +/- 3 C
• Package / Case: SOT-96
• Digital Output - Bus Interface: I2C
• Digital Output - Number Of Bits: 11 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Output Type: Digital
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: SA56004AD,112

NXP Semiconductors
SA56004X_5
Product data sheet
7.9.2 T_CRIT output
Table 16.
The T_CRIT output is LOW when any temperature reading is greater than the preset limit
in the corresponding critical temperature setpoint register. When one of the T_CRIT
setpoint temperatures is exceeded, the appropriate status register bit, 1 (RCRIT) or 0
(LCRIT), is set.
After every local and remote temperature conversion the status register flags and the
T_CRIT output are updated.
T_CRIT output, Status bit 1 (RCRIT) and the remote critical temperature setpoint (RCS),
and critical temperature hysteresis (TH) with remote temperature changes. Note that the
T_CRIT output is de-activated only after the remote temperature is below the remote
temperature setpoint, RCS minus the hysteresis, TH. In the interrupt mode only, the
Status register flags are reset after the Status register is read.
ALERT response bit
7 (MSB)
6
5
4
3
2
1
0
Fig 7.
Event A: T_CRIT goes LOW and Status bit 1 (RCRIT) is set HIGH when Remote
Temperature exceeds RCS, Remote T_CRIT Setpoint.
Event B: Remote Temperature goes below RCS
Status register remains unchanged.
T_CRIT temperature response timing
Status register bit 1
ALERT response bit assignment
T_CRIT output
RCS
(RCRIT)
RCS
TH
Rev. 05 — 22 May 2008
Device address bit
ADD6
ADD5
ADD4
ADD3
ADD2
ADD1
ADD0
1
Figure 7
Digital temperature sensor with overtemperature alarms
A
is a timing diagram showing the relationship of
Function
address bit 6 (MSB) of alerted device
address bit 5 of alerted device
address bit 4 of alerted device
address bit 3 of alerted device
address bit 2 of alerted device
address bit 1 of alerted device
address bit 0 of alerted device
always logic 1
B
TH. T_CRIT is de-activated, but
C
remote temperature
SA56004X
002aad217
© NXP B.V. 2008. All rights reserved.
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