ADM1021A(2012) View Datasheet(PDF) - ON Semiconductor
Part Name
Description
Manufacturer
ADM1021A Datasheet PDF : 16 Pages
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ADM1021A
ON-CHIP
TEMPERATURE
SENSOR
LOCAL TEMPERATURE
VALUE REGISTER
D+ 3
D− 4
ANALOG
MUX
A-TO-D
CONVERTER
BUSY RUN/STANDBY
REMOTE TEMPERATURE
VALUE REGISTER
EXTERNAL DIODE OPEN-CIRCUIT
ADM1021A
LOCAL TEMPERATURE
LOW LIMIT COMPARATOR
LOCAL TEMPERATURE
HIGH LIMIT COMPARATOR
REMOTE TEMPERATURE
LOW LIMIT COMPARATOR
REMOTE TEMPERATURE
HIGH LIMIT COMPARATOR
STATUS REGISTER
ADDRESS POINTER
REGISTER
ONE-SHOT
REGISTER
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
INTERRUPT
MASKING
SMBus INTERFACE
15 STBY
11 ALERT
1
2
5
7
8
9
13
16
NC VDD NC GND GND NC
NC
NC
12
SDATA
14
SCLK
Figure 1. Functional Block Diagram
10
ADD0
6
ADD1
NC = NO CONNECT
Table 1. PIN ASSIGNMENT
Pin No.
1
Mnemonic
NC
2
VDD
3
D+
4
D−
5
NC
6
ADD1
7
GND
8
GND
9
NC
10
ADD0
11
ALERT
12
SDATA
13
NC
14
SCLK
15
STBY
16
NC
Description
No Connect
Positive Supply, 3.0 V to 5.5 V
Positive Connection to Remote Temperature Sensor
Negative Connection to Remote Temperature Sensor
No Connect
Three-state Logic Input, Higher Bit of Device Address
Supply 0 V Connection
Supply 0 V Connection
No Connect
Three-state Logic Input, Lower Bit of Device Address
Open-drain Logic Output Used as Interrupt or SMBus ALERT
Logic Input/Output, SMBus Serial Data. Open-drain Output
No Connect
Logic Input, SMBus Serial Clock
Logic Input Selecting Normal Operation (High) or Standby Mode (Low)
No Connect
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