AM29PDS322D datasheet(25/51 Pages) SPANSION

部件名	AM29PDS322D

功能描述	32 Megabit (2 M x 16-Bit) CMOS 1.8 Volt-only (1.8 V to 2.2 V) Simultaneous Read/Write Page-Mode Boot Sector Flash Memory

PDF	51 Pages

Scroll/Zoom	100%

制造商	SPANSION [SPANSION]

网页	http://www.spansion.com

标志

25 / 51 page

December 4, 2006 23569A5

Am29PDS322D

D A TA

SH EET

cycles, followed by a set-up command. Two additional

unlock write cycles are then followed by the chip erase

command, which in turn invokes the Embedded Erase

algorithm. The device does not require the system to

preprogram prior to erase. The Embedded Erase algo-

rithm automatically preprograms and verifies the entire

memory for an all zero data pattern prior to electrical

erase. The system is not required to provide any con-

trols or timings during these operations. Table 10

shows the address and data requirements for the chip

erase command sequence.

Start

555h/AAh

2AAh/55h

XXXh/A0h

555h/20h

Verify Byte?

Program Address/Program Data

Data# Polling Device

Last Address

Programming Completed

(BA) XXXh/90h

XXXh/F0h

Increment

Address

Yes

Set

Unlock

Bypass

Mode

Unlock

Bypass

Program

Reset

Unlock

Bypass

Mode

Figure 4.

Unlock Bypass Algorithm

START

Write Program

Command Sequence

Data Poll

from System

Verify Data?

Yes

Last Address?

Yes

Programming

Completed

Increment Address

Embedded

Program

algorithm

in progress

Note: See Table 10 for program command sequence.

Figure 5.

Program Operation

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