AM29F400AT datasheet(35/35 Pages) AMD

35 / 35 page

Am29F400AT/Am29F400AB

PRELIMINARY

REVISION SUMMARY

Distinctive Characteristics:

High Performance: The fastest speed option available

is now 60 ns.

Enhanced power management for standby mode:

Changed typical standby current to 1

µA.

General Description:

First paragraph, ﬁrst sentence should read, “...orga-

nized as 512 Kbytes of 8 bits each or 256

Kwords of 16

bits each.” Added 60 ns speed option.

Product Selector Guide:

Added -65 column (60 ns,

±5% V

CC). Added -70 (70 ns,

±10% V

CC) and deleted -75 speed option.

Ordering Information, Standard Products:

The -65 speed option is now listed in the example.

Valid Combinations: Added -65 and -70, and deleted -

75 speed options.

Tables 1 and 2, User Bus Operations:

Corrected WE for read operations; was don’t care (X),

is now H.

Standby Mode:

Corrected standby mode current; was 100

µA, is now

µA.

Table 5, Sector Address Tables (Am29F400AB):

Corrected x16 starting address for SA5; was 1C000h,

is now 28000h.

Erase Suspend:

Third paragraph, third sentence: Deleted the word “NOT.”

Operating Ranges:

VCC Supply Voltages: Added -65 and deleted -75 speed

options in the list. Changed A9 maximum to +13.0 V.

DC Characteristics:

CMOS Compatible: Revised ICC speciﬁcations. Added

Note 4 (refers to ICC3).

AC Characteristics:

Read Only Operations Characteristics: Added the -65

column and test conditions.

Replaced -75 column with -70 column.

Test Conditions, Figure 7:

Changed speed option in ﬁrst CL statement from -75

to -65.

AC Characteristics:

Write/Erase/Program Operations, Alternate CE Con-

trolled Writes: Added the -65 column. Replaced -75

column with -70 column. Revised sector erase and

programming speciﬁcations.

Erase and Programming Performance:

Revised speciﬁcations in table. Clariﬁed table and notes.

Table 7, Command Deﬁnitions

Revised Note 5 to cover all upper address bits that are

don’t care.

Deleted Note 6.

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