HN58X25128I View Datasheet(PDF) - Renesas Electronics

Part Name

Description

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HN58X25128I

Serial Peripheral Interface 128k EEPROM (16-kword × 8-bit) 256k EEPROM (32-kword × 8-bit) Electrically Erasable and Programmable Read Only Memory

Renesas Electronics 

HN58X25128I/HN58X25256I

Byte Write (WRITE) Sequence (Page)

VIH

5

VIL

9

VIH

VIL

VIH

C

VIL

VIH

D

VIL

Q

0 1 2 3 4 5 6 7 8 9 10 20 21 22 23 24 25 26 27 28 29 30 31

Instruction

16-Bit Address

Data Byte 1

15 14 13 3 2 1 0 7 6 5 4 3 2 1 0

High-Z

VIH

5

VIL

9

VIH

VIL

VIH

C

VIL

D

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

Data Byte 2

Data Byte 3

Data Byte N

765432107 6543210

6543210

Q

High-Z

Note: 1. Depending on the memory size, as shown in Address Range Bits table, the most significant

address bits are don’t care.

Data Protect

The protection features of the device are summarized in the following table. When the Status Register Write

Disable (SRWD) bit of the Status Register is 0 (its initial delivery state), it is possible to write to the Status

Register provided that the Write Enable Latch (WEL) bit has previously been set by a Write Enable (WREN)

instruction, regardless weather write protect (W) is driven high or low.

Rev.1.00, Jun.20.2003, page 21 of 27

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