MBM29LV016T-80 データシートの表示（PDF） - Fujitsu

部品番号

コンポーネント説明

メーカー

MBM29LV016T-80

FLASH MEMORY CMOS 16M (2M × 8) BIT

Fujitsu 

MBM29LV016T-80/-90/-12/MBM29LV016B-80/-90/-12

The manufacturer and device codes may also be read via the command register, for instances when the

MBM29LV016T/B are erased or programmed in a system without access to high voltage on the A9 pin. The

command sequence is illustrated in Table 6. (Refer to Autoselect Command section.)

Byte 0 (A0 = VIL) represents the manufacture’s code (Fujitsu = 04H) and A0 = VIH represents the device identifier

code (MBM29LV016T = C7H, MBM29LV016B = 4CH). All identifiers for manufactures and device will exhibit odd

parity with DQ7 defined as the parity bit. In order to read the proper device codes when executing the autoselect,

A1 must be VIL. (See Tables 3.1 and 3.2.)

The device code is C7H (for top boot block) or 4CH (for bottom boot block).

In order to determine which sectors are write protected, A1 must be at VIH while running through the sector

addresses; if the selected sector is protected, a logical ‘1’ will be output on DQ0 (DQ0 = 1).

Table 3.1 MBM29LV016T/B Sector Protection Verify Autoselect Code

Type

A13 to A20

A10

A6

A1

A0

Manufacture’s Code

X

VIL

VIL

VIL

VIL

MBM29LV016T

X

Device Code

MBM29LV016B

X

VIL

VIL

VIL

VIH

VIL

VIL

VIL

VIH

Sector Protection

Sector

Addresses

VIL

VIL

VIH

VIL

Code (HEX)

04H

C7H

4CH

01H*1

*1: Outputs 01H at protected sector addresses and outputs 00H at unprotected sector addresses.

Table 3.2 Expanded Autoselect Code Table

Type

Code DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0

Manufacture’s Code

04H

0

0

0

0

0

1

0

0

MBM29LV016T C7H 1

1

0

0

0

1

1

1

Device Code

MBM29LV016B 4CH 0

1

0

0

1

1

0

0

Sector Protection

01H

0

0

0

0

0

0

0

1

11

Share Link: