4 temperature control (addr: 001 010; 0ah), 10 conversion rate (addr: 100 000; 20h), Conversion rate control – Rainbow Electronics LM32 User Manual
Page 20: 0 register set
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
Register
Name
R/
W
P
O
R
Val
Bit
15
MSb
Bit
14
Bit
13
Bit
12
Bit
11
Bit
10
Bit
9
Bit
8
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
LSb
001 010
Temperature
Control
R/
W
0h
Reserved
EN2 EN1 EN0 ATE
0
0
0
0
0
0
0
0
0
0
0
0
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
R/
W
P
O
R
Val
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
LSb
100 000
Conversion Rate
R/
W
2h
Reserved
CR1
CR0
0
0
0
0
0
0
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
1
00
91
LM32
www.national.com
20