Changhong Electric PF29GA18A, Руководство по обслуживанию, Страница: 28 / 33

SERVICE MANUAL
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 table 14.
Table 1
3
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.
16
7) Refer to Table 21 about Functions and Data of the IC’s Pins.
3 5