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參數(shù)資料
| 型號(hào)： | A29L004ATW-90F |
| 廠商： | AMIC Technology Corporation |
| 英文描述： | 512K X 8 Bit CMOS 3.0 Volt-only, Boot Sector Flash Memory |
| 中文描述： | 為512k × 8位CMOS 3.0伏只，引導(dǎo)扇區(qū)閃存 |
| 文件頁數(shù)： | 17/39頁 |
| 文件大小： | 528K |
| 代理商： | A29L004ATW-90F |
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A29L004A Series
PRELIMINARY
(March, 2005, Version 0.0)
16
AMIC Technology, Corp.
I/O
3
: Sector Erase Timer
After writing a sector erase command sequence, the system
may read I/O
3
to determine whether or not an erase
operation has begun. (The sector erase timer does not apply
to the chip erase command.) If additional sectors are
selected for erasure, the entire time-out also applies after
each additional sector erase command. When the time-out
is complete, I/O
3
switches from "0" to "1." The system may
ignore I/O
3
if the system can guarantee that the time
between additional sector erase commands will always be
less than 50
μ
s. See also the "Sector Erase Command
Sequence" section.
After the sector erase command sequence is written, the
system should read the status on I/O
7
(
Data
Polling) or I/O
6
(Toggle Bit I) to ensure the device has accepted the
command sequence, and then read I/O
3
. If I/O
3
is "1", the
internally controlled erase cycle has begun; all further
commands (other than Erase Suspend) are ignored until the
erase operation is complete. If I/O
3
is "0", the device will
accept additional sector erase commands. To ensure the
command has been accepted, the system software should
check the status of I/O
3
prior to and following each
subsequent sector erase command. If I/O
3
is high on the
second status check, the last command might not have been
accepted. Table 6 shows the outputs for I/O
3
.
START
Read I/O
7
-I/O
0
Toggle Bit
= Toggle
Program/Erase
Operation Not
Commplete, Write
Reset Command
Yes
Notes :
1. Read toggle bit twice to determine whether or not it is
toggling. See text.
2. Recheck toggle bit because it may stop toggling as I/O
5
changes to "1". See text.
No
Read I/O
7
- I/O
0
Twice
I/O
5
= 1
Toggle Bit
= Toggle
Yes
Yes
Program/Erase
Operation Complete
No
No
Read I/O
7
-I/O
0
(Notes 1,2)
Figure 6. Toggle Bit Algorithm
(Note 1)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| A29L004A | 512K X 8 Bit CMOS 3.0 Volt-only, Boot Sector Flash Memory |
| A29L004AL | 512K X 8 Bit CMOS 3.0 Volt-only, Boot Sector Flash Memory |
| A29L004ATL-0F | 512K X 8 Bit CMOS 3.0 Volt-only, Boot Sector Flash Memory |
| A29L004ATL-70 | 512K X 8 Bit CMOS 3.0 Volt-only, Boot Sector Flash Memory |
| A29L004ATL-90 | 512K X 8 Bit CMOS 3.0 Volt-only, Boot Sector Flash Memory |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A29L004ATX-70 | 制造商:AMICC 制造商全稱:AMIC Technology 功能描述:512K X 8 Bit CMOS 3.0 Volt-only, Boot Sector Flash Memory |
| A29L004ATX-70F | 制造商:AMICC 制造商全稱:AMIC Technology 功能描述:512K X 8 Bit CMOS 3.0 Volt-only, Boot Sector Flash Memory |
| A29L004ATX-90 | 制造商:AMICC 制造商全稱:AMIC Technology 功能描述:512K X 8 Bit CMOS 3.0 Volt-only, Boot Sector Flash Memory |
| A29L004ATX-90F | 制造商:AMICC 制造商全稱:AMIC Technology 功能描述:512K X 8 Bit CMOS 3.0 Volt-only, Boot Sector Flash Memory |
| A29L004ATY-70 | 制造商:AMICC 制造商全稱:AMIC Technology 功能描述:512K X 8 Bit CMOS 3.0 Volt-only, Boot Sector Flash Memory |
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