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EMC1187 数据表(PDF) 28 Page - Microchip Technology

部件名 EMC1187
功能描述  Triple Channel 1째C Temperature Sensor with Hardware
PDF  47 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

EMC1187 数据表(HTML) 28 Page - Microchip Technology

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Triple Channel 1°C Temperature Sensor with Hardware Thermal Shutdown and 1.8V SMBus Communications
Datasheet
Revision 1.0 (07-11-13)
28
SMSC EMC1187
DATASHEET
6.1
Data Read Interlock
When any temperature channel high byte register is read, the corresponding low byte is copied into
an internal ‘shadow’ register. The user is free to read the low byte at any time and be guaranteed that
it will correspond to the previously read high byte. Regardless if the low byte is read or not, reading
from the same high byte register again will automatically refresh this stored low byte data.
6.2
Temperature Data Registers
As shown in Table 6.2, all temperatures are stored as an 11-bit value with the high byte representing
the integer value and the low byte representing the fractional value left justified to occupy the MSBits.
6.3
Status Register 02h
The Status Register reports general error conditions. To identify specific channels, refer to Section 6.9,
Section 6.16, Section 6.17, and Section 6.18. The individual Status Register bits are cleared when the
appropriate High Limit, Low Limit, or Therm Limit register has been read or cleared.
Bit 7 - BUSY - This bit indicates that the ADC is currently converting. This bit does not cause either
the ALERT or THERM pin to be asserted.
Table 6.2 Temperature Data Registers
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
00h
R
Internal Diode
High Byte
128
64
32
16
8
4
2
1
00h
29h
R
Internal Diode
Low Byte
0.5
0.25
0.125
-
-
-
-
-
00h
01h
R
External Diode
High Byte
128
64
32
16
8
4
2
1
00h
10h
R
External Diode
Low Byte
0.5
0.25
0.125
-
-
-
-
-
00h
23h
R
External Diode
2 High Byte
128
64
32
16
8
4
2
1
00h
24h
R
External Diode
2 Low Byte
0.5
0.25
0.125
-
-
-
-
-
00h
2Ah
R
External Diode
3 High Byte
128
64
32
16
8
4
2
1
00h
2Bh
R
External Diode
3 Low Byte
0.5
0.25
0.125
-
-
-
-
-
00h
Table 6.3 Status Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
02h
R
Status
BUSY
-
-
HIGH
LOW
FAULT
THERM
HWSD
00h



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