lm41cimtx National Semiconductor Corporation, lm41cimtx Datasheet - Page 23
lm41cimtx
Manufacturer Part Number
lm41cimtx
Description
Hardware Monitor With Thermal Diode Inputs And Sensorpath? Bus
Manufacturer
National Semiconductor Corporation
Datasheet
1.LM41CIMTX.pdf
(27 pages)
010 010
2.0 Register Set
2.10.4 Voltage Control (Addr: 010 010; 12h)
This register is set to the reset value by a Device Reset.
2.11 CONVERSION RATE (Addr: 100 000; 20h)
Reg Add
Reg
Add
100 000
Sensor
Number
(SNUM)
0
1
2
3
4
15-11
10-7
Bit
4-0
5
6
Register
Name
Voltage
Control
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 Voltage Sensor 0 is enabled for voltage measurements.
R/W EN1-EN4 (Enable Sensor 1-4). Same as EN0 for Voltage sensors 1-4.
RO
RO
Register Name
Conversion Rate
Low Rate Function This function is not supported by the LM41 and therefore this field is read only.
LM41, if one or more EN0-EN4 bits of this register are set.
0: Attention Request disabled (from enabled Temperature Sensor- default)
1: Attention Request enabled
0: Voltage Sensor disabled (default)
1: Voltage Sensor enabled
0: Voltage Sensor disabled (default)
1: Voltage Sensor enabled
Reserved. Will always read "0".
Voltage Input
+2.5V
+1.2V
+3.3V_SBY
(V+)
+5V
+12V
R/
R/
W
W
1Fh
Val
(Continued)
O
P
R
Input Voltage
for Nominal
Reading
(code 384 or
180h)
2.5V
1.2V
3.3V
5V
12V
MSb
Bit
15
0
R/
R/
W
W
Bit
14
0
Reserved
Val
2h
O
P
R
Analog Input Voltage Mapping
Bit
13
Maximum
Input Voltage
Range (V for
code 510.5 to
Max V
pin)
3.32V to 6V
1.6V to 6V
4.39V to 6V
6.65V
15.95V to 16V 1FFh
0
Bit
12
0
IN
Bit 7
for
0
Bit
11
0
23
Register
Reading at
Maximum
Voltage
Range
1FFh
1FFh
1FFh
1FFh
EN4 EN3 EN2 EN1 EN0 ATE
Description
Bit 6
Bit
10
0
Bit
9
Bit 5
0
Reserved
Bit
8
Minimum
Input Voltage
-0.5V to
3.26mV
-0.5V to
2.63mV
3.0V
-0.5V to
6.51mV
-0.5V to
15.63mV
Bit
Bit 4
7
0
Bit
6
Bit 3
Bit
0
Register
Reading at
Minimum
Voltage
00h
00h
15Dh
00h
00h
5
Bit
4
1
Bit 2
0
Low Rate Function
Bit
3
1
(Read Only)
Resolution
6.51mV
5.86mV
8.59mV
13.02mV
31.25mV
Bit 1
CR1
Bit
2
1
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Bit
1
1
Bit 0
CR0
LSb
LSb
Bit
0
1