hn58x2464stie Renesas Electronics Corporation., hn58x2464stie Datasheet - Page 8

• Manufacturer Part Number: hn58x2464stie
• Description: Two-wire Serial Interface 32k Eeprom 4-kword X 8-bit /64k Eeprom 8-kword X 8-bit
• Manufacturer: Renesas Electronics Corporation.

HN58X2432SI/HN58X2464SI
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 V
code provided from SDA pin matches corresponding hard-wired device address pins A0 to A2, that one
device can be activated. These pins are internally pulled-down to V
if unconnected.
Pin Connections for A0 to A2
Memory size
32k bit
64k bit
Notes: 1. × = Don’t care (Open is also approval).
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. WP pin
should be fixed high or low status from start condition input to stop condition input. When left
unconnected, write operation for all memory arrays are allowed because the WP pin is internally pulled
down to V
Write Protect Area
WP pin status
V
V
Rev.2.00, Jan.11.2005, page 8 of 20
IH
IL
SS
. The read operation is always activated irrespective of the WP pin status.
Max connect
number
8
8
Pin connection
A2
×*
×*
1
1
Write protect area
All memory
Normal read/write operation
A1
×*
×*
1
1
A0
×*
×*
1
1
Notes
SS
. The device read these pins as Low
CC
or V
SS
. When device address