Akai 29CT24FS, Руководство по обслуживанию

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SERVICE MANUAL
WRITE PROTECT (WP): The AT24C01A/02/04/16 has a Write Protect pin that provides hardware
data protection. The Write Protect pin allows normal read/write operations when connected to
ground (GND). When the Write Protect pin is connected to Vcc, the write protection feature is
enabled and operates as shown in the following table.
Table 10
Part of the Array Protected WP Pin
Status
24C01A 24C02 24C04 24C08 24C16
At Vcc Full (1K)
Array Full (2K)
Array Full (4K)
Array Normal
Read/
Write
Operation Upper
Half
(8K)
Array
At GND Normal Read/Write Operations
5) 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.
·
AT24C08, 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.
·
AT24C16, 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.
6) Block Diagram
Fig. 15 Block diagram
7) Refer to Table 16 about Functions and Data of the IC’s Pins.
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