24lc04b Microchip Technology Inc., 24lc04b Datasheet - Page 11

• Manufacturer Part Number: 24lc04b
• Description: 2 4k I C Serial Eeprom
• Manufacturer: Microchip Technology Inc.

8.0
The descriptions of the pins are listed in Table 8-1.
TABLE 8-1:
8.1
SDA is a bidirectional pin used to transfer addresses
and data into and out of the device. Since it is an open-
drain terminal, the SDA bus requires a pull-up resistor
to V
For normal data transfer, SDA is allowed to change
only during SCL low. Changes during SCL high are
reserved for indicating Start and Stop conditions.
8.2
The SCL input is used to synchronize the data transfer
to and from the device.
© 2007 Microchip Technology Inc.
Name
SDA
SCL
CC
V
V
WP
A0
A1
A2
CC
SS
(typical 10 kΩ for 100 kHz, 2 kΩ for 400 kHz).
PIN DESCRIPTIONS
Serial Address/Data Input/Output
(SDA)
Serial Clock (SCL)
PDIP
1
2
3
4
5
6
7
8
PIN FUNCTION TABLE
SOIC
1
2
3
4
5
6
7
8
TSSOP
1
2
3
4
5
6
7
8
DFN
1
2
3
4
5
6
7
8
MSOP
8.3
The WP pin must be connected to either V
If tied to V
(read/write the entire memory 000-1FF).
If tied to V
memory will be write-protected. Read operations are
not affected.
This feature allows the user to use the 24XX04 as a
serial ROM when WP is enabled (tied to V
8.4
The A0, A1 and A2 pins are not used by the 24XX04.
They may be left floating or tied to either V
1
2
3
4
5
6
7
8
24AA04/24LC04B
Write-Protect (WP)
A0, A1, A2
CC
SS
SOT23
, write operations are inhibited. The entire
, normal memory operation is enabled
—
—
—
2
3
1
5
4
Not Connected
Not Connected
Not Connected
Ground
Serial Address/Data I/O
Serial Clock
Write-Protect Input
+1.7V to 5.5V Power Supply
Description
DS21708G-page 11
CC
SS
SS
).
or V
or V
CC
CC
.
.