AT24MAC402-SSHM-T Atmel, AT24MAC402-SSHM-T Datasheet - Page 4

• Manufacturer Part Number: AT24MAC402-SSHM-T
• Description: EEPROM 2-Kbit Serial EEPROM
• Manufacturer: Atmel

Specifications of AT24MAC402-SSHM-T

• Rohs: yes
• Memory Size: 2 Kbit
• Organization: 256 B x 8
• Data Retention: 100 yr
• Maximum Clock Frequency: 1000 KHz
• Maximum Operating Current: 6 uA
• Operating Supply Voltage: 1.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8

2.
Pin Description
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 Addresses (A
AT24MAC402/602. As many as eight 2K devices may be addressed on a single bus system. Device addressing is
discussed in detail under
Write Protect (WP): The AT24MAC402/602 has a Write Protect pin that provides hardware data protection. When the
Write Protect pin is connected to ground (GND), normal Read/Write operations to the full array are possible. When the
Write Protect pin is connected to V
possible. However, due to capacitive coupling that may appear during customer applications, Atmel recommends always
connecting the WP pins to a known state. When using a pull-up resistor, Atmel recommends using 10k or less. The
write protection operation is summarized in
Table 2-1.
Table 2-2.
Note:
Symbol
C
C
I/O
IN
GND or Floating
GND or Floating
GND or Floating
WP Pin Status
1.
V
Atmel AT24MAC402/602 Write Protection Modes
Pin Capacitance
This parameter is characterized and is not 100% tested.
CC
Test Condition
Input/Output Capacitance (SDA)
Input Capacitance (A
0
, A
“Device Addressing” on page
1
, A
(1)
2
Permanent Write Protect
): The A
CC
Not Programmed
0
, all write operations to the memory are inhibited, but read operations are still
Programmed
, A
Register
0
, A
1
, A
—
—
1
2
, and A
Table 2-1
, SCL)
2
Atmel AT24MAC402/602 [PRELIMINARY DATASHEET]
pins are device address inputs that are hard wired for the
below.
10.
Reversible Write Protect
Not Programmed
Programmed
Register
—
—
Max
8
6
Part of the Array Write
Units
Normal Read/Write
pF
pF
First-half of Array
First-half of Array
8807B–SEEPR–9/2012
Full Array (2K)
Protected
Conditions
V
V
I/O
IN
= 0V
= 0V
4