R1EX24008ASA00A Datasheet, PDF (8/22 Pages) Renesas Technology Corp – Two-wire serial interface 8k EEPROM (1-kword × 8-bit)

R1EX24008Axx00A
Device Address (A0, A1, A2)
Two 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 V_CC or V_SS. 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
Max connect
Memory size number
A2
A1
A0
8k bit
Note:
2
V /V
CC SS
×*²
×*²
1. During floating, “V_CC/V_SS” are fixed to V_SS.
2. Floating state can be possible.
Note
Use A0,A1 for memory address a8and a9
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.
Write Protect Area
WP pin status
V_IH
V_IL
Write protect area
8k bit
Upper 1/2 (4k bit)
Normal read/write operation
REJ03C0351-0001 Rev.0.01 Dec. 28, 2007
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