HN58X24512I 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HN58X24512I

Two-wire serial interface 512k EEPROM (64-kword × 8-bit)

Hitachi -> Renesas Electronics 

HN58X24512I

Device Address (A0, A1)

Up to four devices can be addressed on the same bus by setting the levels on these pins to different

combinations. The levels on these pins are compared with the device address code which are inputted

thought the SDA pin. These device is selected if the compare is successfully done. These pins are

internally pulled down to VSS. The device read these pins as low if unconnected.

Pin Connections for A0, A1

Pin connection

Max connect

Memory size number

A1

A0

Note

512k bit

4

VCC/V SS * 1

VCC/VSS

Note: 1. “VCC/VSS” means that device address pin should be connected to VCC or VSS. The A1 and A0 are

read as VSS, if left unconnected.

Write Protect (WP)

When the Write Protect pin (WP) is high, the write protection feature is enabled and operates as shown in

the following table. When the WP is low, write operation for all memory arrays are allowed. The read

operation is always activated irrespective of the WP pin status. When left unconnected, the WP input is

read as VIL because the WP pin is internally pulled down to VSS.

Write Protect Area

WP pin status

VIH

VIL

Write protect area

Full (512k bit)

Normal read/write operation

8

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