DS620 Datasheet, PDF (2/15 Pages) Dallas Semiconductor – Low-Voltage, +-0.5°C Accuracy Digital Thermometer and Thermostat

DS620 Digital Thermometer and Thermostat
PIN DESCRIPTION
PIN
NAME
FUNCTION
1
SDA
Data Input/Output Pin for serial communication. Open drain. (No diode connection to VDD).
2
SCL
Clock Input Pin for 2-wire serial communication.
3
PO
Programmable Output Pin. Open drain. (No diode connection to VDD).
4
GND
Ground Pin.
5
A2
Address Input Pin.
6
A1
Address Input Pin. Also serves as an input to trigger one-shot conversions during standalone use.
7
A0
Address Input Pin.
8
VDD
Supply Voltage Pin. +1.7V to +3.5V power supply pin.
Figure 1. Block Diagram
DS620
Temp. Core
Digital Control
Bandgap
POR
ADC
Conversion Control
Address/Command
Decode
Address Counter
SCL
SDA
2-Wire Interface
Memory Array
Configuration Register
TH, TL Registers
Digital Comparator
Temperature Register
Temperature Counter
User EEPROM Registers
Memory Interface Logic
A2
A0
A1
PO Pin
PO
Control
Charge Pump
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