AT24C04A ATMEL [ATMEL Corporation], AT24C04A Datasheet - Page 3

• Manufacturer Part Number: AT24C04A
• Description: Two-wire Serial EEPROM Extended Temperature
• Manufacturer: ATMEL [ATMEL Corporation]

Memory Organization
Table 2. Pin Capacitance
Applicable over recommended operating range from T
Note:
5083A–SEEPR–9/04
Symbol
C
C
I/O
IN
This parameter is characterized and is not 100% tested.
Test Condition
Input/Output Capacitance (SDA)
Input Capacitance (A
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 AT24C02A/04A/08A/16A have a WP pin that provides
hardware data protection. The WP pin allows normal read/write operations when con-
nected to ground (GND). When the WP pin is connected to V
feature is enabled and operates as shown. (See Table 1. )
Table 1. Write Protect
AT24C02A, 2K SERIAL EEPROM: The 2K is internally organized with 32 pages of 8
bytes each. Random word addressing requires an 8-bit data word address.
AT24C04A, 4K SERIAL EEPROM: The 4K is internally organized with 32 pages of 16
bytes each. Random word addressing requires a 9-bit data word address.
AT24C08A, 8K SERIAL EEPROM: The 8K is internally organized with 64 pages of 16
bytes each. Random word addressing requires a 10-bit data word address.
AT24C16A, 16K SERIAL EEPROM: The 16K is internally organized with 128 pages of
16 bytes each. Random word addressing requires an 11-bit data word address.
0
, A
WP Pin Status
At V
At GND
1
, A
CC
2
, SCL)
A
= 25 C, f = 1.0 MHz, V
Normal Read/Write Operations
Upper Half
(1K) Array
24C02A
Max
Upper Half
(2K) Array
24C04A
8
6
Part of the Array Protected
AT24C02A/04A/08A/16A
cc
= +2.7V
Units
pF
pF
Full (8K)
24C08A
Array
CC
, the write protection
Conditions
V
V
I/O
IN
Full (16K)
24C16A
= 0V
Array
= 0V
3