Datasheet > A290021

A290021

更新时间： 2022-12-11 20:49:56

品牌	Logo	应用领域
联笙电子 - AMICC		闪存
页数	文件大小	规格书
32页	314K
描述
256K X 8 Bit CMOS 5.0 Volt-only, Boot Sector Flash Memory

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A290021 数据手册

A29002/A290021 Series

Table 2. A29002/A290021 Top Boot Block Sector Address Table

Sector

A17

A16

A15

A14

A13

Sector Size

(Kbytes)

Address Range

SA0

SA1

SA2

SA3

SA4

SA5

SA6

00000h - 0FFFFh

10000h - 1FFFFh

20000h - 2FFFFh

30000h - 37FFFh

38000h - 39FFFh

3A000h - 3BFFFh

3C000h - 3FFFFh

Table 3. A29002/A290021 Bottom Boot Block Sector Address Table

Sector

A17

A16

A15

A14

A13

Sector Size

(Kbytes)

Address Range

SA0

SA1

SA2

SA3

SA4

SA5

SA6

00000h - 03FFFh

04000h - 05FFFh

06000h - 07FFFh

08000h - 0FFFFh

10000h - 1FFFFh

20000h - 2FFFFh

30000h - 3FFFFh

Codes (High Voltage Method) table. In addition, when

verifying sector protection, the sector address must appear

on the appropriate highest order address bits. Refer to the

corresponding Sector Address Tables. The Command

Definitions table shows the remaining address bits that are

don't care. When all necessary bits have been set as

required, the programming equipment may then read the

corresponding identifier code on I/O7 - I/O0.To access the

autoselect codes in-system, the host system can issue the

autoselect command via the command register, as shown

in the Command Definitions table. This method does not

require VID. See "Command Definitions" for details on

using the autoselect mode.

Autoselect Mode

The autoselect mode provides manufacturer and device

identification, and sector protection verification, through

identifier codes output on I/O7 - I/O0. This mode is primarily

intended for programming equipment to automatically

match a device to be programmed with its corresponding

programming algorithm. However, the autoselect codes

can also be accessed in-system through the command

When using programming equipment, the autoselect mode

requires VID (11.5V to 12.5 V) on address pinA9. Address

pins A6, A1, and AO must be as shown in Autoselect

Table 4. A29002/A290021 Autoselect Codes (High Voltage Method)

Identifier Code on

I/O7 - I/O0

Description

A17 - A13 A12 - A10 A9

A8 - A7 A6 A5 - A2 A1

Manufacturer ID: AMIC

VID

VIL

VIH

37h

Device ID: A29002/

A290021

Top Boot Block: 8Ch

Bottom Boot Block: 0Dh

01h (protected)

Sector Protection

Verification

Sector

Address

VID

VIL

VIH

VIL

VIH

00h (unprotected)

7Fh

Continuation ID

VID

Note:

=VIL,

=VIL and

=VIH when Autoselect Mode

(February, 2002, Version 1.0)

AMIC Technology, Inc.

1...3 4 567 8 9...32

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