AT24C01A_07 Datasheet, PDF (3/20 Pages) ATMEL Corporation – Two-wire Automotive Temperature Serial EEPROM

AT24C01A/02/04/08A/16A
The AT24C08A only uses the A2 input for hardwire addressing and a total of two 8K
devices may be addressed on a single bus system. The A0 and A1 pins are no
connects.
The AT24C16A does not use the device address pins, which limits the number of
devices on a single bus to one. The A0, A1 and A2 pins are no connects.
WRITE PROTECT (WP): The AT24C01A/02/04/08A/16A has a Write Protect pin that
provides hardware data protection. The Write Protect pin allows normal read/write oper-
ations when connected to ground (GND). When the Write Protect pin is connected to
V_CC, the write protection feature is enabled and operates as shown in the following
table.
Table 2. Write Protect
WP Pin
Status
At V_CC
At GND
Part of the Array Protected
24C01A
24C02
24C04
24C08A
Full (1K) Array Full (2K) Array Full (4K) Array Full (8K) Array
Normal Read/Write Operations
24C16A
Full (16K) Array
Memory Organization AT24C01A, 1K SERIAL EEPROM: Internally organized with 16 pages of 8 bytes each,
the 1K requires a 7-bit data word address for random word addressing.
AT24C02, 2K SERIAL EEPROM: Internally organized with 32 pages of 8 bytes each,
the 2K requires an 8-bit data word address for random word addressing.
AT24C04, 4K SERIAL EEPROM: Internally organized with 32 pages of 16 bytes each,
the 4K requires a 9-bit data word address for random word addressing.
AT24C08A, 8K SERIAL EEPROM: Internally organized with 64 pages of 16 bytes
each, the 8K requires a 10-bit data word address for random word addressing.
AT24C16A, 16K SERIAL EEPROM: Internally organized with 128 pages of 16 bytes
each, the 16K requires an 11-bit data word address for random word addressing.
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5092C–SEEPR–2/07