DS1624 반도체 회로 부품 판매점
Digital Thermometer and Memory
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 Dallas |
www.dalsemi.com
DS1624
Digital Thermometer and Memory
FEATURES
§ Temperature measurements require no
external components
§ Measures temperatures from -55°C to +125°C
in 0.03125°C increments. Fahrenheit
equivalent is -67°F to +257°F in 0.05625°F
increments
§ Temperature is read as a 13-bit value (two
byte transfer)
§ Converts temperature to digital word in 1
second (max)
§ 256 bytes of E2 memory on board for storing
information such as frequency compensation
coefficients
§ Data is read from/written via a 2-wire serial
interface (open drain I/O lines)
§ Applications include temperature-
compensated crystal oscillators for test
equipment and radio systems
§ 8-pin DIP or SOIC packages
PIN ASSIGNMENT
SDA
SCL
NC
GND
1
2
3
4
8 VDD
7 A0
6 A1
5 A2
DS1624S 8-PIN SOIC (208 MIL)
See Mech Drawings Section
SDA
SCL
NC
GND
1
2
3
4
8 VDD
7 A0
6 A1
5 A2
DS1624 8-PIN DIP (300 MIL)
See Mech Drawings Section
PIN DESCRIPTION
SDA - 2-Wire Serial Data Input/Output
SCL - 2-Wire Serial Clock
GND - Ground
A0 - Chip Address Input
A1 - Chip Address Input
A2 - Chip Address Input
VDD - Digital Power Supply (+3V - +5V)
NC - No Connection
DESCRIPTION
The DS1624 consists of a digital thermometer and 256 bytes of E2 memory. The thermometer provides
13-bit temperature readings which indicate the temperature of the device. The E2 memory allows a user to
store frequency compensation coefficients for digital correction of crystal frequency due to temperature.
Any other type of information may also reside in this user space.
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072099
DETAILED PIN DESCRIPTION Table 1
PIN SYMBOL DESCRIPTION
1
SDA
Data input/output pin for 2-wire serial communication port.
2 SCL Clock input/output pin for 2-wire serial communication port.
3 NC No connect. No Internal Connection.
4
GND
Ground pin.
5 A2 Address input pin.
6 A1 Address input pin.
7 A0 Address input pin.
8 VDD Supply Voltage 2.7V to 5.5V input power pin.
DS1624
OVERVIEW
A block diagram of the DS1624 is shown in Figure 1. The DS1624 consists of two separate functional
units: 1) a 256–byte nonvolatile E2 memory, and 2) a direct–to–digital temperature sensor.
The nonvolatile memory is made up of 256 bytes of E2 memory. This memory may be used to store any
type of information the user wishes; for example, frequency compensation coefficients may be placed in
this memory to allow for compensation of measured frequency depending upon the temperature at which
the measurement is made. These memory locations are accessed through the 2–wire serial bus.
The direct to digital temperature sensor allows the DS1624 to measure the ambient temperature and
report the temperature value in a 13–bit word, with 0.03125°C resolution. The temperature sensor and its
related registers are accessed through the 2–wire serial interface.
DS1624 FUNCTIONAL BLOCK DIAGRAM Figure 1
VDD STATUS REGISTER &
CONTROL LOGIC
SCL ADDRESS
AND
I/O CONTROL
SDA
A0
A1
A2
GND
TEMPERATURE SENSOR
EEPROM MEMORY (256 BYTES)
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제조업체: Dallas
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DS1624 data
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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