Rainbow-electronics LM85 Manual do Utilizador descarregar pdf (Página 2)

Connection Diagram

24 Pin QSOP

20035302

NS Package MQA24

Top View

LM85BIMQ or LM85CIMQ (55 units per rail), or

LM85BIMQX or LM85CIMQX (2500 units per tape and reel)

Information on the differences between the LM85BIMQ and LM85CIMQ can be found in Section 6.0. It is highly recommended

that all new designs use the LM85BIMQ.

Pin Descriptions

Symbol Pin Typ Name and Function/Connection

SMBus

SMBDAT 1 Digital I/O

(Open-Drain)

System Management Bus Data. Open-drain output. 5V tolerant,

SMBus 2.0 compliant.

SMBCLK 2 Digital Input System Management Bus Clock. Tied to Open-drain output. 5V

tolerant, SMBus 2.0 compliant.

Processor

VID Lines

VID0 5 Digital Input Voltage identification signal from the processor. This value is read

in the VID0–VID4 Status Register.

VID1 6 Digital Input Voltage identification signal from the processor. This value is read

in the VID0–VID4 Status Register.

VID2 7 Digital Input Voltage identification signal from the processor. This value is read

in the VID0–VID4 Status Register.

VID3 8 Digital Input Voltage identification signal from the processor. This value is read

in the VID0–VID4 Status Register.

VID4 19 Digital Input Voltage identification signal from the processor. This value is read

in the VID0–VID4 Status Register.

Power

3.3V 4 POWER +3.3V pin. Can be powered by +3.3V Standby power if monitoring

in low power states is required. This pin also serves as the analog

input to monitor the 3.3V supply. This pin should be bypassed

with a 0.1µf capacitor in parallel with 100pf. A bulk capacitance of

approximately 10µf needs to be in the near vicinity of the LM85.

GND 3 GROUND Ground for all analog and digital circuitry.

Voltage

Inputs

5V 20 Analog Input Analog input for +5V monitoring.

12V 21 Analog Input Analog input for +12V monitoring.

2.5V 22 Analog Input Analog input for +2.5V monitoring.

V

CCP

23 Analog Input Analog input for +V

CCP

(processor voltage) monitoring.

LM85

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