DS24B33G+T&R

The DS24B33G+T&R is an 1-wire 4Kb EEPROM in 2 pin SFN package. This 4096bit, 1-wire EEPROM is organized as 16 memory pages of 256bit each. Data is written to a 32byte scratchpad, verified and then copied to the EEPROM memory. The DS24B33 communicates over a single conductor 1-wire bus. The communication follows the standard 1-wire protocol. Each device has its own unalterable and unique 64bit registration number that is factory programmed into the chip which ensures error free device selection and absolute part identity. The registration number is used to address the device in a multidrop 1-wire net environment. The DS24B33 is software compatible to the DS2433. Typical applications include storage of calibration constants, board identification and storage of product revision status.

• 2.8V to 5.25V 1-wire pull-up voltage, 0.3 to 2.2Kohm 1-wire pull-up resistance
• Operating temperature range from -40°C to +85°C
• 4096bit of non-volatile EEPROM partitioned into sixteen 256bit pages
• Read and write access is highly backward compatible to the DS2433
• 256bit scratchpad with strict read/write protocols ensures integrity of data transfer
• Switchpoint hysteresis to optimize performance in the presence of noise
• Communicates to host at 15.4Kbps or 125Kbps using 1-wire protocol
• IEC 1000-4-2 level 4 ESD protection (±8KV contact, ±15kV air, typical) for IO pin
• 2000pF input capacitance, 5µA maximum input load current, 200000 write/erase cycles at +25°C
• Programming current of 2mA, programming time of 5ms, data retention of 40 years

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Embedded Design & Development

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