IS24C02A データシートの表示（PDF） - Integrated Silicon Solution
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IS24C02A Datasheet PDF : 21 Pages
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IS24C02A IS24C04A IS24C08A IS24C16A
PIN CONFIGURATION
8-Pin DIP, SOIC, DFN, TSSOP, MSOP
PIN CONFIGURATION
8-pad DFN
ISSI ®
A0 1
A1 2
A2 3
GND 4
8 VCC
7 WP
6 SCL
5 SDA
A0 1
A1 2
A2 3
GND 4
8 VCC
7 WP
6 SCL
5 SDA
(Top View)
PIN DESCRIPTIONS
A0-A2
SDA
SCL
WP
Vcc
GND
Address Inputs
Serial Address/Data I/O
Serial Clock Input
Write Protect Input
Power Supply
Ground
SCL
This input clock pin is used to synchronize the data
transfer to and from the device.
SDA
The SDA is a Bi-directional pin used to transfer addresses and data
into and out of the device. The SDA pin is an open drain output and
can be wire-Or'ed with other open drain or open collector
outputs. The SDA bus requires a pullup resistor to Vcc.
A0, A1, A2
The A0, A1 and A2 are the device address inputs. The
IS24C02A uses the A0, A1, and A2 for hardware addressing
and a total of 8 devices may be used on a single bus system.
When the A0, A1, or A2 inputs are left floating, the input
internally defaults to zero.
The IS24C04A uses A1 and A2 pins for hardwire addressing
and a total of four devices may be addressed on a single bus
system. The A0 pin is a no connect in the IS24C04A. When
the A1 or A2 input is left floating, the input internally defaults
to zero.
The IS24C08A only uses the A2 input for hardwire addressing
and a total of two devices may be addressed on a single bus
system. The A0 and A1 pins are no connects in the
IS24C08A. When the A2 input is left floating, the input
internally defaults to zero.
These pins are not used by IS24C16A . The A0, A1, and A2 pins
are no connects in the IS24C16A.
WP
WP is the Write Protect pin. If the WP pin is tied to VCC on
the IS24C02A, IS24C04A, IS24C08A and IS24C016A, the
entire array becomes Write Protected (Read only). When WP
is tied to GND or left floating normal read/write operations are
allowed to the device.
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
3
Rev. F
01/09/06
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