24AA01T MICROCHIP [Microchip Technology], 24AA01T Datasheet - Page 11

• Manufacturer Part Number: 24AA01T
• Description: 1K I2C Serial EEPROM
• Manufacturer: MICROCHIP [Microchip Technology]

8.0
The descriptions of the pins are listed in Table 8-1.
TABLE 8-1:
8.1
The A0, A1 and A2 pins are not used by the 24XX01.
They may be left floating or tied to either V
8.2
The SDA input 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
2 k
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.
 2003 Microchip Technology Inc.
Name
SDA
SCL
V
V
WP
A0
A1
A2
SS
CC
for 400 kHz).
PIN DESCRIPTIONS
A0, A1, A2
Serial Address/Data Input/Output
(SDA)
PDIP
1
2
3
4
5
6
7
8
PIN FUNCTION TABLE
SOIC
CC
1
2
3
4
5
6
7
8
(typical 10 k
TSSOP
1
2
3
4
5
6
7
8
MSOP SOT23
for 100 kHz,
1
2
3
4
5
6
7
8
SS
or V
CC
—
—
—
2
3
1
5
4
.
Not Connected
Not Connected
Not Connected
Ground
Serial Address/Data I/O
Serial Clock
Write-Protect Input
+1.8V to 5.5V Power Supply
8.3
The SCL input is used to synchronize the data transfer
to and from the device.
8.4
This pin must be connected to either V
If tied to V
(read/write the entire memory
If tied to V
memory will be write-protected. Read operations are
not affected.
This feature allows the user to use the 24XX01 as a
serial ROM when WP is enabled (tied to V
Description
24AA01/24LC01B
Serial Clock (SCL)
Write-Protect (WP)
CC
SS
, write operations are inhibited. The entire
normal memory operation is enabled
00-7F
DS21711C-page 11
).
SS
or V
CC
).
CC
.