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IS24C08A Datasheet(PDF) 3 Page - Integrated Silicon Solution, Inc |
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IS24C08A Datasheet(HTML) 3 Page - Integrated Silicon Solution, Inc |
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3 / 21 page  Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 3 Rev. F 01/09/06 IS24C02A IS24C04A IS24C08A IS24C16A ISSI® PIN DESCRIPTIONS A0-A2 Address Inputs SDA Serial Address/Data I/O SCL Serial Clock Input WP Write Protect Input Vcc Power Supply GND Ground SCL This input clock pin is used to synchronize the data transfer to and from the device. SDA TheSDAisaBi-directionalpinusedtotransferaddressesanddata intoandoutofthedevice. TheSDApinisanopendrainoutputand 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. PIN CONFIGURATION 8-Pin DIP, SOIC, DFN, TSSOP, MSOP 1 2 3 4 8 7 6 5 A0 A1 A2 GND VCC WP SCL SDA 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. PIN CONFIGURATION 8-pad DFN 1 2 3 4 8 7 6 5 A0 A1 A2 GND VCC WP SCL SDA (Top View) |
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