24AA04-I/SNG Microchip Technology, 24AA04-I/SNG Datasheet - Page 9

• Manufacturer Part Number: 24AA04-I/SNG
• Description: EEPROM Serial-I2C 4K-Bit 2Block x 256 x 8 1.8V/2.5V/3.3V/5V 8-Pin SOIC N Tube
• Manufacturer: Microchip Technology

Specifications of 24AA04-I/SNG

• Package: 8SOIC N
• Interface Type: Serial-I2C
• Density: 4 Kb
• Maximum Operating Frequency: 0.4 MHz
• Maximum Random Access Time: 900 ns
• Typical Operating Supply Voltage: 1.8|2.5|3.3|5 V
• Organization: 2Blockx256x8
• Data Retention: 200(Min) Year
• Operating Temperature: -40 to 85 °C

3.0
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
3.1
The A0, A1 and A2 pins are not used by the 24XX01
through 24XX16 devices.
The A0, A1 and A2 inputs are used by the 24C01C,
24C02C, 24XX014, 24XX024, 24XX025 and the
24XX32 through 24XX1025 for multiple device opera-
tions. The levels on these inputs are compared with the
corresponding bits in the slave address. The chip is
selected if the compare is true.
For the 24XX128 and 24XX256 in the MSOP package
only, pins A0 and A1 are not connected.
Up to eight devices (two for the 24XX128 and
24XX256 MSOP package) may be connected to the
same bus by using different Chip Select bit
combinations.
In most applications, the chip address inputs A0, A1
and A2 are hard-wired to logic ‘0’ or logic ‘1’. For
applications in which these pins are controlled by a
microcontroller or other programmable device, the chip
address pins must be driven to logic ‘0’ or logic ‘1’
before normal device operation can proceed.
© 2007 Microchip Technology Inc.
A0
A1
A2
V
SDA
SCL
(NC)
WP
V
Note 1:
Pin Name
SS
CC
Note:
2:
3:
4:
PIN DESCRIPTIONS
A0, A1, A2 Chip Address Inputs
Pins 1 and 2 are not connected for the 24XX128 and 24XX256 MSOP packages.
Pin 7 is not used for 24XX00, 24XX025 and 24C01C.
Pins A0, A1 and A2 are not used by some devices (no internal connections). See Table 1-1 for details.
Pin A2 should be tied to a Logic High in the 24XX1025 for proper operation.
In the 24XX1025, the A2 pin is not config-
urable, it must be tied to V
this device to operate properly.
8-Pin PDIP
and SOIC
7
—
1
2
3
4
5
6
8
(2)
PIN FUNCTION TABLE
TSSOP and
MSOP
8-Pin
1
2
7
—
3
4
5
6
8
(1)
(1)
(2)
5-Pin SOT-23
CC
24XX00
in order for
—
—
—
—
2
3
1
4
5
24AAXX/24LCXX/24FCXX
5-Pin SOT-23
All except
24XX00
—
—
—
—
2
3
1
5
4
3.2
This is a bidirectional pin used to transfer addresses
and data into and out of the device. It is an open drain
terminal. Therefore, the SDA bus requires a pull-up
resistor to V
400 kHz and 1 MHz).
For normal data transfer, SDA is allowed to change
only during SCL low. Changes during SCL high are
reserved for indicating the Start and Stop conditions.
3.3
This input is used to synchronize the data transfer to
and from the device.
3.4
This pin must be connected to either V
to V
write operations are inhibited but read operations are
not affected. See Table 1-1 for the write-protect
scheme of each device.
3.5
A V
disables the internal erase/write logic if V
1.5V at nominal conditions. For the 24C00, 24C01C
and 24C02C devices, the erase/write logic is disabled
below 3.8V at nominal conditions.
5x6 DFN and
SS
CC
2x3 DFN
, write operations are enabled. If tied to V
8-Pin
—
threshold detect circuit is employed which
1
2
3
4
5
6
7
8
Serial Data (SDA)
Serial Clock (SCL)
Write-Protect (WP)
Power Supply (V
CC
(typical 10 kΩ for 100 kHz, 2 kΩ for
User configurable Chip Select
User configurable Chip Select
User configurable Chip Select
Ground
Serial Data
Serial Clock
Not Connected
Write-Protect Input
Power Supply
CC
Function
)
DS21930C-page 9
SS
or V
CC
(3)(4)
(3)(4)
(3)(4)
CC
is below
. If tied
CC
,