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PDF AT49BV6416 Data sheet ( Hoja de datos )
| Número de pieza | AT49BV6416 | |
| Descripción | Flash Memory | |
| Fabricantes | ATMEL Corporation | |
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Features
• 64-megabit (4M x 16) Flash Memory
• 2.7V - 3.6V Read/Write
• High Performance
– Asynchronous Access Time – 70 ns
– Page Mode Read Time – 20 ns
• Sector Erase Architecture
– Eight 4K Word Sectors with Individual Write Lockout
– One Hundred Twenty-seven 32K Word Main Sectors with Individual Write Lockout
• Typical Sector Erase Time: 32K Word Sectors – 700 ms; 4K Word Sectors – 200 ms
• Four Plane Organization, Permitting Concurrent Read in Any of Three Planes not Being
Programmed/Erased
– Memory Plane A: 16M of Memory Including Eight 4K Word Sectors
– Memory Plane B: 16M of Memory Consisting of 32K Word Sectors
– Memory Plane C: 16M of Memory Consisting of 32K Word Sectors
– Memory Plane D: 16M of Memory Consisting of 32K Word Sectors
• Suspend/Resume Feature for Erase and Program
– Supports Reading and Programming Data from Any Sector by Suspending Erase
of a Different Sector
– Supports Reading Any Word by Suspending Programming of Any Other Word
• Low-power Operation
– 30 mA Active
– 35 µA Standby
• 2.2V I/O Option Reduces Overall System Power
• Data Polling and Toggle Bit for End of Program Detection
• VPP Pin for Write Protection and Accelerated Program Operations
• RESET Input for Device Initialization
• TSOP Package
• Top or Bottom Boot Block Configuration Available
• 128-bit Protection Register
• Common Flash Interface (CFI)
• Green (Pb/Halide-free) Packaging Option
64-megabit
(4M x 16)
Page Mode
2.7-volt Flash
Memory
AT49BV6416
AT49BV6416T
1. Description
The AT49BV6416(T) is a 2.7-volt 64-megabit Flash memory. The memory is divided
into multiple sectors and planes for erase operations. The device can be read or
reprogrammed off a single 2.7V power supply, making it ideally suited for in-system
programming. The output voltage can be separately controlled down to 2.2V through
the VCCQ supply pin. The device can operate in the asynchronous or page read
mode.
The AT49BV6416(T) is divided into four memory planes. A read operation can occur
in any of the three planes which is not being programmed or erased. This concurrent
operation allows improved system performance by not requiring the system to wait for
a program or erase operation to complete before a read is performed. To further
increase the flexibility of the device, it contains an Erase Suspend and Program Sus-
pend feature. This feature will put the erase or program on hold for any amount of time
and let the user read data from or program data to any of the remaining sectors. There
is no reason to suspend the erase or program operation if the data to be read is in
another memory plane. The end of program or erase is detected by Data Polling or
toggle bit.
3451C–FLASH–2/05
1 page  
AT49BV6416(T)
Table 3-1.
VPP
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VIL
Hardlock and Softlock Protection Configurations in Conjunction with WP
Erase/
Hard-
Soft-
Prog
WP
lock
lock
Allowed? Comments
000
Yes No sector is locked
001
No Sector is Softlocked. The Unlock command can unlock the sector.
011
No
Hardlock protection mode is enabled. The sector cannot be
unlocked.
100
Yes No sector is locked.
101
No Sector is Softlocked. The Unlock command can unlock the sector.
110
Yes Hardlock protection mode is overridden and the sector is not locked.
111
No
Hardlock protection mode is overridden and the sector can be
unlocked via the Unlock command.
xxx
No Erase and Program Operations cannot be performed.
Figure 3-1. Sector Locking State Diagram
UNLOCKED
LOCKED
[000]
WP = VIL = 0
A
C
B
[001]
C
Power-Up/Reset
Default
[011]
Hardlocked
WP = VIH = 1
[110]
[100]
A
A
B
C
B
[111]
Hardlocked is disabled by
WP = VIH
C Power-Up/Reset
Default
[101]
A = Unlock Command
B = Softlock Command
C = Hardlock Command
Note: 1. The notation [X, Y, Z] denotes the locking state of a sector. The current locking state of a sector is defined by the state of WP
and the two bits of the sector-lock status D[1:0].
3.7.3
Sector Protection Detection
A software method is available to determine if the sector protection Softlock or Hardlock features
are enabled. When the device is in the software product identification mode a read from the I/O0
and I/O1 at address location 00002H within a sector will show if the sector is unlocked, soft-
locked, or hardlocked.
3451C–FLASH–2/05
5
5 Page 
AT49BV6416(T)
4. Status Bit Table
Configuration
Register:
Read Address
In
While
I/O7
00/01
00/01
00/01
00/01
Plane A Plane B Plane C Plane D
00/01
Plane A
I/O6
00/01
Plane B
00/01
Plane C
00/01
Plane D
00/01
Plane A
I/O2
00/01
Plane B
00/01
Plane C
00/01
Plane D
Programming
in Plane A
Programming
in Plane B
Programming
in Plane C
Programming
in Plane D
Erasing in
Plane A
Erasing in
Plane B
Erasing in
Plane C
Erasing in
Plane D
Erase
Suspended &
Read Erasing
Sector
Erase
Suspended &
Read Non-
erasing Sector
Erase
Suspended &
Program Non-
erasing Sector
in Plane A
Erase
Suspended &
Program Non-
erasing Sector
in Plane B
Erase
Suspended &
Program Non-
erasing Sector
in Plane C
Erase
Suspended &
Program Non-
erasing Sector
in Plane D
Erase
Suspended &
Program
Suspended &
Read from
Non-
suspended
Sectors
I/O7/0
DATA
DATA
DATA
0/0
DATA
DATA
DATA
1
DATA
I/O7/0
DATA
DATA
DATA
DATA
DATA
I/O7/0
DATA
DATA
DATA
0/0
DATA
DATA
1
DATA
DATA
I/O7/0
DATA
DATA
DATA
DATA
DATA
I/O7/0
DATA
DATA
DATA
0/0
DATA
1
DATA
DATA
DATA
I/O7/0
DATA
DATA
DATA TOGGLE
DATA
DATA
DATA
1
DATA
DATA
DATA
DATA
DATA
TOGGLE
DATA
DATA
DATA
1
DATA
DATA
DATA
DATA
DATA
TOGGLE
DATA
DATA
DATA
1
DATA
I/O7/0
DATA
DATA
DATA
TOGGLE
DATA
DATA
DATA
1
DATA TOGGLE
DATA
DATA
DATA
TOGGLE
DATA
DATA
DATA
DATA
DATA
TOGGLE
DATA
DATA
DATA
TOGGLE
DATA
DATA
DATA
DATA
DATA
TOGGLE
DATA
DATA
DATA
TOGGLE
DATA
0/0
DATA
DATA
DATA
TOGGLE
DATA
DATA
DATA
TOGGLE
1 1 1 1 1 TOGGLE TOGGLE TOGGLE TOGGLE
DATA
DATA
DATA
DATA
DATA
DATA
DATA
DATA
DATA
DATA TOGGLE
DATA
DATA
DATA
TOGGLE
DATA
DATA
DATA
DATA
DATA
TOGGLE
DATA
DATA
DATA
TOGGLE
DATA
DATA
DATA
DATA
DATA
TOGGLE
DATA
DATA
DATA
TOGGLE
DATA
I/O7/0
DATA
DATA
DATA
TOGGLE
DATA
DATA
DATA
TOGGLE
DATA
DATA
DATA
DATA
DATA
DATA
DATA
DATA
DATA
3451C–FLASH–2/05
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AT49BV6416.PDF ] | |
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