24AA32A-E/MS MICROCHIP [Microchip Technology], 24AA32A-E/MS Datasheet - Page 12

• Manufacturer Part Number: 24AA32A-E/MS
• Description: 32KIC Serial EEPROM
• Manufacturer: MICROCHIP [Microchip Technology]

24AA32A/24LC32A
7.0
The descriptions of the pins are listed in Table 7-1.
TABLE 7-1:
7.1
The A0, A1, A2 inputs are used by the 24XX32A for
multiple device operation. The levels on these inputs
are compared with the corresponding bits in the slave
address. The chip is selected if the compare is true.
Up to eight devices may be connected to the same bus
by using different Chip Select bit combinations. These
inputs must be connected to either V
7.2
SDA 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)
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.
DS21713D-page 12
Name
SDA
SCL
V
V
WP
A0
A1
A2
CC
SS
PIN DESCRIPTIONS
A0, A1, A2 Chip Address Inputs
Serial Data (SDA)
CC
(typical 10 k
PDIP
PIN FUNCTION TABLE
1
2
3
4
5
6
7
8
SOIC
1
2
3
4
5
6
7
8
for 100 kHz, 2 k
CC
or V
TSSOP
SS
1
2
3
4
6
7
8
5
.
for
MSOP
1
2
3
4
5
6
7
8
7.3
The SCL input is used to synchronize the data transfer
to and from the device.
7.4
The WP pin can be connected to either V
floating. An internal pull-down resistor on this pin will
keep the device in the unprotected state if left floating.
If tied to V
is enabled (read/write the entire memory 000-FFF).
If tied to V
operations are not affected.
ROTATED
TSSOP
Serial Clock (SCL)
Write-Protect (WP)
SS
3
4
5
6
7
8
1
2
CC
, or left floating, normal memory operation
, write operations are inhibited. Read
Chip Address Input
Chip Address Input
Chip Address Input
Ground
Serial Address/Data I/O
Serial Clock
Write-Protect Input
+1.8V to 5.5V Power Supply
 2003 Microchip Technology Inc.
Description
SS
, V
CC
or left