24AA01T MICROCHIP [Microchip Technology], 24AA01T Datasheet - Page 11
24AA01T
Manufacturer Part Number
24AA01T
Description
1K I2C Serial EEPROM
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.24AA01T.pdf
(24 pages)
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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
.