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AT29LV1024 の電気的特性と機能

AT29LV1024のメーカーはATMEL Corporationです、この部品の機能は「1 Megabit 64K x 16 3-volt Only CMOS Flash Memory」です。


製品の詳細 ( Datasheet PDF )

部品番号 AT29LV1024
部品説明 1 Megabit 64K x 16 3-volt Only CMOS Flash Memory
メーカ ATMEL Corporation
ロゴ ATMEL Corporation ロゴ 




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AT29LV1024 Datasheet, AT29LV1024 PDF,ピン配置, 機能
AT29LV1024
Features
Single Voltage, Range 3V to 3.6V Supply
3-Volt-Only Read and Write Operation
Software Protected Programming
Fast Read Access Time - 150 ns
•• Low Power Dissipation
15 mA Active Current
50 µA CMOS Standby Current
Sector Program Operation
Single Cycle Reprogram (Erase and Program)
512 Sectors (128 words/sector)
Internal Address and Data Latches for 128 Words
Fast Sector Program Cycle Time - 20 ms
Internal Program Control and Timer
DATA Polling for End of Program Detection
Typical Endurance > 10,000 Cycles
CMOS and TTL Compatible Inputs and Outputs
•• Commercial and Industrial Temperature Ranges
Description
The AT29LV1024 is a 3-volt-only in-system Flash programmable and erasable read
only memory (PEROM). Its 1 megabit of memory is organized as 65,536 words by 16
bits. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device
offers access times to 150 ns with power dissipation of just 54 mW. When the device
is deselected, the CMOS standby current is less than 50 µA. The device endurance
is such that any sector can typically be written to in excess of 10,000 times.
To allow for simple in-system reprogrammability, the AT29LV1024 does not require
high input voltages for programming. Three-volt-only cowmwwm.DataaSnhedets4U.dcoemtermine the opera-
tion of the device. Reading data out of the device is similar to reading from an
Pin Configurations
(continued)
Pin Name
A0 - A15
CE
OE
WE
I/O0 - I/O15
NC
DC
Function
Addresses
Chip Enable
Output Enable
Write Enable
Data
Inputs/Outputs
No Connect
Don’t Connect
PLCC Top View
TSOP Top View
Type 1
1 Megabit
(64K x 16)
3-volt Only
CMOS Flash
Memory
AT29LV1024
0564A
4-63

1 Page





AT29LV1024 pdf, ピン配列
AT29LV1024
Device Operation (Continued)
ration of tWC, a read operation will effectively be a polling
operation.
HARDWARE DATA PROTECTION: Hardware features
protect against inadvertent programs to the AT29LV1024
in the following ways: (a) VCC sense— if VCC is below 1.8V
(typical), the program function is inhibited. (b) VCC power
on delay— once VCC has reached the VCC sense level,
the device will automatically time out 10 ms (typical) be-
fore programming. (c) Program inhibit— holding any one
of OE low, CE high or WE high inhibits program cycles. (d)
Noise filter— pulses of less than 15 ns (typical) on the WE
or CE inputs will not initiate a program cycle.
INPUT LEVELS: While operating with a 3.3V ±10%
power supply, the address inputs and control inputs (OE,
CE and WE) may be driven from 0 to 5.5V without ad-
versely affecting the operation of the device. The I/O lines
can be driven from 0 to 3.6V.
PRODUCT IDENTIFICATION: The product identifica-
tion mode identifies the device and manufacturer as At-
mel. It may be accessed by hardware or software opera-
tion. The hardware operation mode can be used by an ex-
ternal programmer to identify the correct programming al-
gorithm for the Atmel product. In addition, users may wish
to use the software product identification mode to identify
the part (i.e. using the device code), and have the system
software use the appropriate sector size for program op-
erations. In this manner, the user can have a common
board design for various Flash densities and, with each
density’s sector size in a memory map, have the system
software apply the appropriate sector size.
For details, see Operating Modes (for hardware operation)
or Software Product Identification. The manufacturer and
device code is the same for both modes.
DATA POLLING: The AT29LV1024 features DATA
polling to indicate the end of a program cycle. During a
program cycle an attempted read of the last word loaded
will result in the complement of the loaded data on I/O7
and I/O15. Once the program cycle has been completed,
true data is valid on all outputs and the next cycle may
begin. DATA polling may begin at any time during the pro-
gram cycle.
TOGGLE BIT: I n a d d i t i o n t o DATA p o l l i n g t h e
AT29LV1024 provides another method for determining
the end of a program or erase cycle. During a program or
erase operation, successive attempts to read data from
the device will result in I/O6 and I/O14 toggling between
one and zero. Once the program cycle has completed,
I/O6 and I/O14 will stop toggling and valid data will be
read. Examining the toggle bit may begin at any time dur-
ing a program cycle.
OPTIONAL CHIP ERASE MODE: The entire device
can be erased by using a 6-byte software code. Please
see Software Chip Erase application note for details.
Absolute Maximum Ratings*
Temperature Under Bias................. -55°C to +125°C
Storage Temperature...................... -65°C to +150°C
All Input Voltages
(including NC Pins)
with Respect to Ground ................... -0.6V to +6.25V
All Output Voltages
with Respect to Ground .............-0.6V to VCC + 0.6V
Voltage on OE
with Respect to Ground ................... -0.6V to +13.5V
*NOTICE: Stresses beyond those listed under “Absolute Maxi-
mum Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the
device at these or any other conditions beyond those indi-
cated in the operational sections of this specification is not
implied. Exposure to absolute maximum rating conditions
for extended periods may affect device reliability.
4-65


3Pages


AT29LV1024 電子部品, 半導体
AC Word Load Characteristics
Symbol
Parameter
tAS, tOES
Address, OE Set-up Time
tAH Address Hold Time
tCS Chip Select Set-up Time
tCH Chip Select Hold Time
tWP Write Pulse Width (WE or CE)
tDS Data Set-up Time
tDH, tOEH
Data, OE Hold Time
tWPH
Write Pulse Width High
AC Word Load Waveforms (1, 2)
WE Controlled
Min
0
100
0
0
200
100
0
200
Max Units
ns
ns
ns
ns
ns
ns
ns
ns
CE Controlled
Notes: 1. The software data protection commands must be
applied prior to word loads.
4-68 AT29LV1024
2. A complete sector (128 words) should be loaded using
these waveforms as shown in the Software Protected
Word Load waveforms (see next page).

6 Page



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部品番号部品説明メーカ
AT29LV1024

1 Megabit 64K x 16 3-volt Only CMOS Flash Memory

ATMEL Corporation
ATMEL Corporation


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