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ADM1021AARQZ-R Fiches technique(PDF) 2 Page - ON Semiconductor

No de pièce ADM1021AARQZ-R
Description  Low Cost Microprocessor System Temperature Monitor Microcomputer
PDF  16 Pages
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Fabricant  ONSEMI [ON Semiconductor]
Site Internet  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

ADM1021AARQZ-R Fiches technique(HTML) 2 Page - ON Semiconductor

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ADM1021A
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2
Figure 1. Functional Block Diagram
ON-CHIP
TEMPERATURE
SENSOR
ANALOG
MUX
BUSY
A-TO-D
CONVERTER
LOCAL TEMPERATURE
VALUE REGISTER
RUN/STANDBY
EXTERNAL DIODE OPEN-CIRCUIT
STATUS REGISTER
SMBus INTERFACE
INTERRUPT
MASKING
ADD0
ADD1
6
10
CONVERTION RATE
REGISTER
LOCAL TEMPERATURE
LOW LIMIT REGISTER
LOCAL TEMPERATURE
HIGH LIMIT REGISTER
REMOTE TEMPERATURE
LOW LIMIT REGISTER
REMOTE TEMPERATURE
HIGH LIMIT REGISTER
CONFIGURATION
REGISTER
GND
7
VDD
2
ADM1021A
D+
ALERT
3
D− 4
REMOTE TEMPERATURE
VALUE REGISTER
ONE-SHOT
REGISTER
SCLK
14
SDATA
12
15 STBY
ADDRESS POINTER
REGISTER
LOCAL TEMPERATURE
LOW LIMIT COMPARATOR
LOCAL TEMPERATURE
HIGH LIMIT COMPARATOR
REMOTE TEMPERATURE
LOW LIMIT COMPARATOR
REMOTE TEMPERATURE
HIGH LIMIT COMPARATOR
11
NC
1
NC
5
GND
8
NC
9
NC
13
NC
16
NC = NO CONNECT
Table 1. PIN ASSIGNMENT
Pin No.
Mnemonic
Description
1
NC
No Connect
2
VDD
Positive Supply, 3.0 V to 5.5 V
3
D+
Positive Connection to Remote Temperature Sensor
4
D−
Negative Connection to Remote Temperature Sensor
5
NC
No Connect
6
ADD1
Three-state Logic Input, Higher Bit of Device Address
7
GND
Supply 0 V Connection
8
GND
Supply 0 V Connection
9
NC
No Connect
10
ADD0
Three-state Logic Input, Lower Bit of Device Address
11
ALERT
Open-drain Logic Output Used as Interrupt or SMBus ALERT
12
SDATA
Logic Input/Output, SMBus Serial Data. Open-drain Output
13
NC
No Connect
14
SCLK
Logic Input, SMBus Serial Clock
15
STBY
Logic Input Selecting Normal Operation (High) or Standby Mode (Low)
16
NC
No Connect



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