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R1EX24512BTAS0I Datasheet(PDF) 7 Page - Renesas Technology Corp |
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R1EX24512BTAS0I Datasheet(HTML) 7 Page - Renesas Technology Corp |
7 / 19 page R1EX24512BSAS0I/R1EX24512BTAS0I R10DS0026EJ0400 Rev.4.00 Page 7 of 17 Sep, 20, 2013 Device Address (A0, A1, A2) Eight devices can be wired for one common data bus line as maximum. Device address pins are used to distinguish each device and device address pins should be connected to VCC or VSS. When device address code provided from SDA pin matches corresponding hard-wired device address pins A0 to A2, that one device can be activated. Pin Connections for A0 to A2 Pin connection Memory size Max connect number A2 A1 A0 Note 512k bit 8 VCC/VSS * 1 VCC/VSS * 1 VCC/VSS * 1 Note: 1. During floating, "VCC/VSS" are fixed to VSS, Because they are pulled down in the devise. 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. Also, acknowledgment "0" is outputted after inputting device address and memory address. After inputting write data, acknowledgment "1"(NO ACK) is outputted. 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. Write Protect Area Write protect area WP pin status 512k bit VIH Full (512k bit) VIL Normal read/write operation |
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