ID246PXX データシートの表示（PDF） - Sharp Electronics

部品番号

コンポーネント説明

メーカー

ID246PXX

Flash Memory Card

Sharp Electronics 

SHARI=

ID246 SERIES PRODUCT OVERVIEW

7

6. Functions

6.1 Common Memory

6. 1. 1 Common Memory Architecture

Figure 2 shows common memory architecture of ID246 series flash memory card. Device pair is consisted of two

pieces of flash memory devices. Each device has individually erasable and lockable blocks. All blocks are divided

into odd bytes and even bytes.

Each device pair and block is selected by address bits. Table 3 shows definitions of address bits.

DEVICE PAIR 5

DEVll

1 DEVIO

=

=

=

DEVICi PAIR 2

DEVS

1 DEV4

DEVIti PAIR 1

DEV3

1 DEV2

I

DEVICE PAIR 0

LH28FO32SKD LH28FO32SKD

- jGx-8&-

- - -4;I z 8jjii

DEVl

DEVO

//

Bank1

-

Bank0

/’ Blodc63

/

/1

I

/

I

I

‘‘WI

‘I

I

I

1I

Bank1

Bank0

1

ODD

EVEN

Word Mode

Odd-Byte Mode

I\1

D15-D8

yte Mode

Word Mode

Byte Mode

D7-DO

F1076E4)’

Figure 2. Common Memory Architecture

Table 3. Address Difinitions

Address Pifinitions

Select Even / Odd byte in the byte access

mode.

Select address in the block.

Select a block.

Select a bank

Select a device pair.

32MB ,4OMB ,48MB

A0

A16-Al (64KJ3/Block)

A21 -A17 (32blocks/bank)

A22 (2banks/device)

A25 -A23

T1173E-01

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