AT24HC04BN-SH-T Atmel, AT24HC04BN-SH-T Datasheet - Page 3

• Manufacturer Part Number: AT24HC04BN-SH-T
• Description: IC EEPROM 4KBIT 1MHZ 8SOIC
• Manufacturer: Atmel

Specifications of AT24HC04BN-SH-T

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 4K (512 x 8)
• Speed: 400kHz, 1MHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (3.9mm Width)
• Density: 4Kb
• Interface Type: Serial (2-Wire)
• Organization: 512x8
• Access Time (max): 900ns
• Frequency (max): 400KHz
• Write Protection: Yes
• Data Retention: 100Year
• Operating Supply Voltage (typ): 2.5/3.3/5V
• Package Type: SOIC
• Operating Temp Range: -40C to 85C
• Supply Current: 3mA
• Operating Supply Voltage (min): 1.8V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1. Pin Description
5227E–SEEPR–11/08
SERIAL CLOCK (SCL): The SCL input is used to positive edge clock data into each EEPROM
device and negative edge clock data out of each device.
SERIAL DATA (SDA): The SDA pin is bidirectional for serial data transfer. This pin is open-
drain driven and may be wire-ORed with any number of other open-drain or open collector
devices.
DEVICE/PAGE ADDRESSES (A2, A1, A0): The A2 and A1 pins are device address inputs that
must be hardwired for the AT24HC04B. As many as four 4K devices may be addressed on a
single bus system. The A0 pin is a no-connect. (Device addressing and Page addressing are
discussed in detail under Device Addressing and Page Addressing,
WRITE PROTECT (WP): The AT24HC04B has a WP pin that provides hardware data protec-
tion. The WP pin allows normal read/write operations when connected to ground (GND). When
the WP pin is connected to V
Table 1-1.
WP Pin Status
At V
At GND
CC
Write Protect
CC
, the write protection feature is enabled and operates as shown.
Normal Read/Write Operations
Part of the Array Protected
Upper Half (2K) Array
24HC04B
page
AT24HC04B
8).
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