
DS1957
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DS1957 FUNCTIONAL BLOCK DIAGRAM Figure 1
1-WIRE FUNCTION
CONTROL
64-BIT LASERED
ROM
128-BYTE
INTERMEDIATE
PRODUCT
REGISTER
DATA TRANSFER
AND CONTROL
FUNCTION
CONTROL
16-BIT CRC
GENERATOR
2 X 8-BYTE
I/O BUFFER
STATUS REGISTER
TRUE TIME CLOCK
ARITHMETIC
ACCELERATOR
MICROCOMPUTER
TEMP. SENSOR
134K BYTE
SRAM
64K BYTE
ROM
3 VOLT LITHIUM
CLOCK AND MEMORY BACKUP
DATA
INT VDD
DATA
LID
CONTACT
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