SA56004(2013) Просмотр технического описания (PDF) - NXP Semiconductors.

Номер в каталоге

Компоненты Описание

производитель

SA56004
(Rev.:2013)

SMBus-compatible, 8-pin, remote/local digital temperature sensor with overtemperature alarms

NXP Semiconductors. 

NXP Semiconductors

SA56004X

Digital temperature sensor with overtemperature alarms

Table 17. ALERT response bit assignment

ALERT response bit

Device address bit

7 (MSB)

ADD6

6

ADD5

5

ADD4

4

ADD3

3

ADD2

2

ADD1

1

ADD0

0

1

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

7.9.2 T_CRIT output

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. Figure 7 is a timing diagram showing the relationship of

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.

RCS

RCS − TH

Status register bit 1

(RCRIT)

remote temperature

SA56004X

Product data sheet

T_CRIT output

A

BC

002aad217

Fig 7. T_CRIT temperature response timing

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  TH. T_CRIT is de-activated, but

Status register remains unchanged.

All information provided in this document is subject to legal disclaimers.

Rev. 7 — 25 February 2013

© NXP B.V. 2013. All rights reserved.

17 of 43

Share Link: