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19-6288 Rev 12/13
 
 
FEATURES
"   Temperature Measurements Require No
External Components
"   Measures Temperatures from -55癈 to
+125癈 in 0.0625癈 Increments
"   Temperature is Read as a 12-Bit Value
(2-Byte Transfer)
"   Converts Temperature to Digital Word in
200ms (max)
"   256 Bytes of E
2
 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)
"   8-Pin PDIP or SO Packages
PIN CONFIGURATIONS 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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
V
DD
    - Power Supply (+2.7V to +5.5V)
N.C.    - No Connection
 
DESCRIPTION
The DS1624 consists of two separate functional units: 1) a 256-byte nonvolatile E
2
 memory and 2) a
direct-to-digital temperature sensor.
 
The nonvolatile memory is made up of 256 bytes of E
2
 memory. This memory can be used to store any
type of information the user wishes. 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 in a 12-bit word with 0.0625癈 resolution. The temperature sensor and its related
registers are accessed through the 2-wire serial interface. Figure 1 shows a block diagram of the DS1624.
DS1624
Di  ital Thermometer and Memor
6
3
1
2
4
7
5
DA
A
A1
A2
SO (208 mils)
6
3
1
2
4
7
5
DA
A
A1
A2
PDIP (300 mils)
 
 
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