LM32 National Semiconductor Corporation, LM32 Datasheet - Page 20

• Manufacturer Part Number: LM32
• Description: Dual Thermal Diode Temperature Sensor With SensorPath™ Bus
• Manufacturer: National Semiconductor Corporation

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001 010
2.0 Register Set
2.9.4 Temperature Control (Addr: 001 010; 0Ah)
This register is set to the reset value by a Device Reset.
2.10 CONVERSION RATE (Addr: 100 000; 20h)
Reg Add
Add
Reg
100 000
15-4
1-0
7-2
Bit
Bit
0
1
2
3
LowPwr
Register
Name
Temperature
Control
0
1
Type
Type
R/W ATE (Attention Enable). When set, this bit enables an Attention Request signal to be generated by the
R/W EN0 (Enable Sensor 0). When this bit is set, the Local Temperature Sensor is enabled for temperature
R/W EN1 (Enable Sensor 1). When this bit is set, the Remote Thermal Diode 1 Temperature Sensor is enabled
R/W EN2 (Enable Sensor 2). When this bit is set, the Remote Thermal Diode 2 Temperature Sensor is enabled
RO
RO
RO
Register Name
Conversion Rate
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)
measurements.
0: Temperature Sensor disabled (default)
1: Temperature Sensor enabled
for temperature measurements.
0: Temperature Sensor disabled (default)
1: Temperature Sensor enabled
for temperature measurements.
0: Temperature Sensor disabled (default)
1: Temperature Sensor enabled
Reserved. Will always read "0".
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.
Reserved. Will always read "0".
Temperature
-255.5 ˚C
-256 ˚C
- 40 ˚C
R/
W
R/
W
Val
(Continued)
0h
O
R
P
MSb
Bit
15
0
R/
W
R/
W
[CR1:CR0]
Bit
14
0
Temperature Data Format (Continued)
00
00
Val
2h
P
O
R
Bit
13
0
Conversion Rate Control
Bit
12
0
Bit 7
0
Bit
11
0
10 0000 0001
10 0000 0000
11 1011 0000
20
Description
Bit 6
Description
Reserved
Bit
Binary
10
0
0
Bit
9
0
Bit 5
0
Reserved
Bit
8
0
Bit
Typical Conversion Rate (ms)
Bit 4
7
0
0
Fastest*: continuous
Bit
6
0
Bit 3
Bit
0
5
0
91
Bit
4
0
Bit 2
0
EN2 EN1 EN0 ATE
3B0h
201h
200h
Bit
Hex
3
Bit 1
CR1
Bit
2
Bit
1
Bit 0
CR0
LSb
LSb
Bit
0