AM29LV320DT90EI AMD (ADVANCED MICRO DEVICES), AM29LV320DT90EI Datasheet - Page 4

• Manufacturer Part Number: AM29LV320DT90EI
• Description: Flash Memory IC
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of AM29LV320DT90EI

• Memory Configuration: 4M X 8 / 2M X 16 Bit
• Package/case: 48-TSOP
• Supply Voltage Max: 3.6V
• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No
• Access Time, Tacc: 90nS
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

GENERAL DESCRIPTION
T h e A m 2 9 LV 3 2 0 D i s a 3 2 m e g a b i t , 3 . 0
volt-only flash memory device, organized as
2,097,152 words of 16 bits each or 4,194,304
bytes of 8 bits each. Word mode data appears
on DQ0–DQ15; byte mode data appears on
DQ0–DQ7. The device is designed to be pro-
grammed in-system with the standard 3.0 volt
V
standard EPROM programmers.
The device is available with an access time of
90 or 120 ns. The devices are offered in 48-pin
TSOP and 48-ball FBGA packages. Standard
control pins—chip enable (CE#), write enable
(WE#), and output enable (OE#)—control nor-
mal read and write operations, and avoid bus
contention issues.
The device requires only a single 3.0 volt
power supply for both read and write func-
tions. Internally generated and regulated volt-
ages are provided for the program and erase
operations.
Am29LV320D Features
The SecSi
extra sector capable of being permanently
locked by AMD or customers. The SecSi Indi-
cator Bit (DQ7) is permanently set to a 1 if the
part is factory locked, and set to a 0 if cus-
tomer lockable. This way, customer lockable
parts can never be used to replace a factory
locked part. Note that the Am29LV320D has
a SecSi Sector size of 64 Kbytes. AMD de-
vices designated as replacements or sub-
stitutes, such as the Am29LV320M, have
256 bytes. This should be considered dur-
ing system design.
Factory locked parts provide several options.
The SecSi Sector may store a secure, random
16 byte ESN (Electronic Serial Number), cus-
4
CC
supply, and can also be programmed in
TM
Sector (Secured Silicon) is an
Am29LV320D
tomer code (programmed through AMD’s Ex-
p r e s s F l a s h s e r v i c e ) , o r b o t h . C u s t o m e r
Lockable parts may utilize the SecSi Sector as
bonus space, reading and writing like any other
flash sector, or may permanently lock their own
code there.
The device offers complete compatibility with
the JEDEC single-power-supply Flash com-
mand set standard. Commands are written to
the command register using standard micro-
processor write timings. Reading data out of
the device is similar to reading from other Flash
or EPROM devices.
The host system can detect whether a program
or erase operation is complete by using the de-
vice status bits: RY/BY# pin, DQ7 (Data# Poll-
i n g ) a n d D Q 6 /D Q 2 ( t og g l e b i t s ). A f t e r a
program or erase cycle is completed, the device
automatically returns to the read mode.
The sector erase architecture allows mem-
ory sectors to be erased and reprogrammed
without affecting the data contents of other
s e c to rs . T h e d e v i c e i s fu l l y e ra s e d w h en
shipped from the factory.
Hardware data protection measures include
a low V
write operations during power transitions. The
hardware sector protection feature disables
both program and erase operations in any com-
bination of the sectors of memory. This can be
achieved in-system or via programming equip-
ment.
The device offers two power-saving features.
When addresses are stable for a specified
amount of time, the device enters the auto-
matic sleep mode. The system can also place
the device into the standby mode. Power con-
sumption is greatly reduced in both modes.
CC
detector that automatically inhibits
November 15, 2004