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AT49BV001T-12PC 데이터시트 PDF




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부품번호 AT49BV001T-12PC 기능
기능 1-Megabit 128K x 8 Single 2.7-Volt Battery-Voltage Flash Memory
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AT49BV001T-12PC 데이터시트, 핀배열, 회로
Features
Single Supply for Read and Write: 2.7V to 3.6 (BV), 3.0 to 3.6V (LV)
Fast Read Access Time - 70 ns
Internal Program Control and Timer
Sector Architecture
– One 16K Byte Boot Block with Programming Lockout
– Two 8K Byte Parameter Blocks
– Two Main Memory Blocks (32K, 64K) Bytes
Fast Erase Cycle Time - 10 seconds
Byte By Byte Programming - 30 µs/Byte Typical
Hardware Data Protection
DATA Polling For End Of Program Detection
Low Power Dissipation
– 25 mA Active Current
– 50 µA CMOS Standby Current
Typical 10,000 Write Cycles
Description
The AT49BV/LV001(N)(T) is a 3-volt-only in-system reprogrammable Flash Memory.
Its 1 megabit of memory is organized as 131,072 words by 8 bits. Manufactured with
Atmel’s advanced nonvolatile CMOS technology, the device offers access times to 70
ns with power dissipation of just 90 mW over the commercial temperature range.
When the device is deselected, the CMOS standby current is less than 50 µA. For the
(continued)
Pin Configurations
DIP Top View
Pin Name
A0 - A16
CE
OE
WE
RESET
I/O0 - I/O7
DC
NC
Function
Addresses
Chip Enable
Output Enable
Write Enable
RESET
Data Inputs/Outputs
Don’t Connect
No Connect
PLCC Top View
*RESET
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32 VCC
31 WE
30 NC
29 A14
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CE
21 I/O7
20 I/O6
19 I/O5
18 I/O4
17 I/O3
VSOP Top View (8 x 14mm) or
TSOP Top View (8 x 20mm)
Type 1
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
5
6
7
8
9
10
11
12
13
29 A14
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CE
21 I/O7
A11
A9
A8
A13
A14
NC
WE
VCC
*RESET
A16
A15
A12
A7
A6
A5
A4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32 OE
31 A10
30 CE
29 I/O7
28 I/O6
27 I/O5
26 I/O4
25 I/O3
24 GND
23 I/O2
22 I/O1
21 I/O0
20 A0
19 A1
18 A2
17 A3
*Note: This pin is a DC on the AT49BV001N(T) and AT49LV001N(T).
1-Megabit
(128K x 8)
Single 2.7-Volt
Battery-Voltage
Flash Memory
AT49BV001
AT49LV001
AT49BV001N
AT49LV001N
AT49BV001T
AT49LV001T
AT49BV001NT
AT49LV001NT
Rev. 1110A–07/98
1




AT49BV001T-12PC pdf, 반도체, 판매, 대치품
address range of the boot block is 1C000 to 1FFFF for the
AT49BV/LV001(N)T.
Once the feature is enabled, the data in the boot block can
no longer be erased or programmed with input voltage level
of 5.5V or less. Data in the main memory block can still be
changed through the regular programming method. To acti-
vate the lockout feature, a series of six program commands
to specific addresses with specific data must be performed.
Please refer to the Command Definitions table.
BOOT BLOCK LOCKOUT DETECTION: A software
method is available to determine if programming of the boot
block section is locked out. When the device is in the soft-
ware product identification mode (see Software Product
Identification Entry and Exit sections) a read from address
location 00002H will show if programming the boot block is
locked out for the AT49BV/LV001(N) and a read from
address 1C002H will show if programming the boot block is
locked out for the AT49BV/LV001(N)T. If the data on I/O0
is low, the boot block can be programmed; if the data on
I/O0 is high, the program lockout feature has been acti-
vated and the block cannot be programmed. The software
product identification code should be used to return to stan-
dard operation.
BOOT BLOCK PROGRAMMING LOCKOUT OVERRIDE:
The user can override the boot block programming lockout
by taking the RESET pin to 12 volts during the entire chip
erase, sector erase or byte programming operation. When
the RESET pin is brought back to TTL levels the boot block
programming lockout feature is again active. This feature is
not available on the AT49BV/LV001N(T).
PRODUCT IDENTIFICATION: The product identification
mode identifies the device and manufacturer as Atmel. It
may be accessed by hardware or software operation. The
hardware operation mode can be used by an external pro-
grammer to identify the correct programming algorithm for
the Atmel product.
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 AT49BV/LV001(N)(T) features
DATA polling to indicate the end of a program cycle. During
a program cycle an attempted read of the last byte loaded
will result in the complement of the loaded data on I/O7.
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 program cycle.
TOGGLE BIT: In addition to DATA polling the
AT49BV/LV001(N)(T) provides another method for deter-
mining the end of a program or erase cycle. During a pro-
gram or erase operation, successive attempts to read data
from the device will result in I/O6 toggling between one and
zero. Once the program cycle has completed, I/O6 will stop
toggling and valid data will be read. Examining the toggle
bit may begin at any time during a program cycle.
HARDWARE DATA PROTECTION: Hardware features
protect against inadvertent programs to the
AT49BV/LV001(N)(T) in the following ways: (a) VCC sense:
if VCC is below 1.8V (typical), the program function is inhib-
ited. (b) Program inhibit: holding any one of OE low, CE
high or WE high inhibits program cycles. (c) Noise filter:
pulses of less than 15 ns (typical) on the WE or CE inputs
will not initiate a program cycle.
4 AT49BV/LV001(N)(T)

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AT49BV001T-12PC 전자부품, 판매, 대치품
AT49BV/LV001(N)(T)
AC Read Characteristics
Symbol
tACC
tCE(1)
tOE(2)
tDF(3)(4)
tOH
Parameter
Address to Output Delay
CE to Output Delay
OE to Output Delay
CE or OE to Output Float
Output Hold from OE, CE or
Address, whichever occurred first
AT49LV001(N)(T)-70
Min Max
70
70
0 35
0 25
0
AT49BV/LV001(N)(T)-90
Min Max
90
90
0 40
0 25
0
AT49BV/LV001(N)(T)-12
Min Max
120
120
0 50
0 30
0
Units
ns
ns
ns
ns
ns
AC Read Waveforms (1)(2)(3)(4)
ADDRESS
CE
ADDRESS VALID
OE
OUTPUT
tCE
tOE
tACC
HIGH Z
t DF
tOH
OUTPUT
VALID
Notes: 1. CE may be delayed up to tACC - tCE after the address transition without impact on tACC.
2. OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE or by tACC - tOE after an address change
without impact on tACC.
3. tDF is specified from OE or CE whichever occurs first (CL = 5 pF).
4. This parameter is characterized and is not 100% tested.
Input Test Waveform and Measurement Level Output Load Test
AC
DRIVING
LEVELS
tR, tF < 5 ns
2.4V
0.4V
1.5V
AC
MEASUREMENT
LEVEL
3.0V
1.8K
1.3K
OUTPUT
PIN
30 pF
Pin Capacitance
(f = 1 MHz, T = 25°C)(1)
Typ
CIN
COUT
Note:
4
8
1. This parameter is characterized and is not 100% tested.
Max
6
12
Units
pF
pF
Conditions
VIN = 0V
VOUT = 0V
7

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관련 데이터시트

부품번호상세설명 및 기능제조사
AT49BV001T-12PC

1-Megabit 128K x 8 Single 2.7-Volt Battery-Voltage Flash Memory

ATMEL Corporation
ATMEL Corporation

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