Rainbow-electronics LM32 Uživatelský manuál stáhnout pdf (Strana 20)

2.0 Register Set (Continued)

Temperature Data Format (Continued)

Temperature Binary Hex

- 40 ˚C 11 1011 0000 3B0h

-255.5 ˚C 10 0000 0001 201h

-256 ˚C 10 0000 0000 200h

2.9.4 Temperature Control (Addr: 001 010; 0Ah)

This register is set to the reset value by a Device Reset.

Reg

Add

Name

Val

Bit

MSb

Bit

LSb

001 010

Temperature

Control

Reserved

EN2 EN1 EN0 ATE

000000000000

Bit Type Description

0 R/W ATE (Attention Enable). When set, this bit enables an Attention Request signal to be generated by the

LM32, if the EN0, EN1 or EN2 bits of this register are set.

0: Attention Request disabled (from enabled Temperature Sensor- default)

1: Attention Request enabled (from enabled Temperature Sensor)

1 R/W EN0 (Enable Sensor 0). When this bit is set, the Local Temperature Sensor is enabled for temperature

measurements.

0: Temperature Sensor disabled (default)

1: Temperature Sensor enabled

2 R/W EN1 (Enable Sensor 1). When this bit is set, the Remote Thermal Diode 1 Temperature Sensor is enabled

for temperature measurements.

0: Temperature Sensor disabled (default)

1: Temperature Sensor enabled

3 R/W EN2 (Enable Sensor 2). When this bit is set, the Remote Thermal Diode 2 Temperature Sensor is enabled

for temperature measurements.

0: Temperature Sensor disabled (default)

1: Temperature Sensor enabled

15-4 RO Reserved. Will always read "0".

2.10 CONVERSION RATE (Addr: 100 000; 20h)

Reg Add Register Name

Val

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1

Bit 0

LSb

100 000 Conversion Rate

Reserved

CR1 CR0

000000

Bit Type Description

1-0 RO CR0 and CR1 (Conversion Rate bits 0 and 1) These bits control the conversion rate of the LM32 for

more details see Table Conversion Rate Control and desciption below.

7-2 RO Reserved. Will always read "0".

Conversion Rate Control

LowPwr [CR1:CR0] Typical Conversion Rate (ms)

0 00 Fastest*: continuous

100 91

LM32

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