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参数资料
| 型号： | A29400SERIES |
| 英文描述： | 512K X 8 Bit / 256K X 16 Bit CMOS 5.0 Volt-only. Boot Sector Flash Memory |
| 中文描述： | 为512k × 8位/ 256 × 16位的CMOS 5.0伏特只。引导扇区闪存 |
| 文件页数： | 11/33页 |
| 文件大小： | 331K |
| 代理商： | A29400SERIES |
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A29400 Series
PRELIMINARY (December, 2002, Version 0.2)
11
AMIC Technology, Corp.
START
Write Erase
Command
Sequence
Data Poll
from System
Data = FFh
Erasure Completed
Yes
Embedded
Erase
algorithm in
progress
Note :
1. See the appropriate Command Definitions table for erase
command sequences.
2. See "I/O
3
: Sector Erase Timer" for more information.
No
Figure 3. Erase Operation
Figure 3 illustrates the algorithm for the erase operation.
Refer to the Erase/Program Operations tables in the "AC
Characteristics" section for parameters, and to the Sector
Erase Operations Timing diagram for timing waveforms.
Erase Suspend/Erase Resume Commands
The Erase Suspend command allows the system to interrupt
a sector erase operation and then read data from, or program
data to, any sector not selected for erasure. This command is
valid only during the sector erase operation, including the
50
μ
s time-out period during the sector erase command
sequence. The Erase Suspend command is ignored if written
during the chip erase operation or Embedded Program
algorithm. Writing the Erase Suspend command during the
Sector Erase time-out immediately terminates the time-out
period and suspends the erase operation. Addresses are
"don't cares" when writing the Erase Suspend command.
When the Erase Suspend command is written during a sector
erase operation, the device requires a maximum of 20
μ
s to
suspend the erase operation. However, when the Erase
Suspend command is written during the sector erase time-
out, the device immediately terminates the time-out period
and suspends the erase operation.
After the erase operation has been suspended, the system
can read array data from or program data to any sector not
selected for erasure. (The device "erase suspends" all
sectors selected for erasure.) Normal read and write timings
and command definitions apply. Reading at any address
within erase-suspended sectors produces status data on I/O
7
- I/O
0
. The system can use I/O
7
, or I/O
6
and I/O
2
together, to
determine if a sector is actively erasing or is erase-
suspended. See "Write Operation Status" for information on
these status bits.
After an erase-suspended program operation is complete, the
system can once again read array data within non-suspended
sectors. The system can determine the status of the program
operation using the I/O
7
or I/O
6
status bits, just as in the
standard program operation. See "Write Operation Status" for
more information.
The system may also write the autoselect command
sequence when the device is in the Erase Suspend mode.
The device allows reading autoselect codes even at
addresses within erasing sectors, since the codes are not
stored in the memory array. When the device exits the
autoselect mode, the device reverts to the Erase Suspend
mode, and is ready for another valid operation. See
"Autoselect Command Sequence" for more information.
The system must write the Erase Resume command (address
bits are "don't care") to exit the erase suspend mode and
continue the sector erase operation. Further writes of the
Resume command are ignored. Another Erase Suspend
command can be written after the device has resumed
erasing.
相关PDF资料 |
PDF描述 |
|---|---|
| A29800SERIES | 1024K X 8 Bit / 512K X 16 Bit CMOS 5.0 Volt-only. Boot Sector Flash Memory |
| A2982ELW | Octal Peripheral Driver |
| A2982SLWTR | Octal Peripheral Driver |
| A2982 | 8-CHANNEL SOURCE DRIVERS |
| A2982SLW | 8-CHANNEL SOURCE DRIVERS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| A29400TM-55 | 制造商:AMICC 制造商全称:AMIC Technology 功能描述:512K X 8 Bit / 256K X 16 Bit CMOS 5.0 Volt-only, Boot Sector Flash Memory |
| A29400TM-70 | 制造商:AMICC 制造商全称:AMIC Technology 功能描述:512K X 8 Bit / 256K X 16 Bit CMOS 5.0 Volt-only, Boot Sector Flash Memory |
| A29400TM-90 | 制造商:AMICC 制造商全称:AMIC Technology 功能描述:512K X 8 Bit / 256K X 16 Bit CMOS 5.0 Volt-only, Boot Sector Flash Memory |
| A29400TV-55 | 制造商:AMICC 制造商全称:AMIC Technology 功能描述:512K X 8 Bit / 256K X 16 Bit CMOS 5.0 Volt-only, Boot Sector Flash Memory |
| A29400TV-70 | 制造商:AMICC 制造商全称:AMIC Technology 功能描述:512K X 8 Bit / 256K X 16 Bit CMOS 5.0 Volt-only, Boot Sector Flash Memory |
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