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: 28/33页
文件大小: 331K
代理商: A29400SERIES
A29400 Series
PRELIMINARY (December, 2002, Version 0.2)
28
AMIC Technology, Corp.
Timing Waveforms for Alternate
CE
Controlled Write Operation (
RESET
=V
IH
on A29400)
Addresses
WE
OE
CE
Data
555 for program
2AA for erase
PA
D
OUT
~
~
I/O
7
~
~
~
Data Polling
Note :
1. PA = Program Address, PD = Program Data, SA = Sector Address, I/O
2. Figure indicates the last two bus cycles of the command sequence.
7
= Complement of Data Input, D
OUT
= Array Data.
PD for program
30 for sector erase
10 for chip erase
~
t
BUSY
t
WHWH1 or 2
t
AH
t
AS
t
WC
t
WH
t
GHEL
t
CP
t
WS
t
CPH
PA for program
SA for sector erase
555 for chip erase
A0 for program
55 for erase
t
RH
t
DS
t
DH
~
~
RESET
RY/BY
Erase and Programming Performance
Parameter
Typ. (Note 1)
Max. (Note 2)
Unit
Comments
Sector Erase Time
Chip Erase Time
Byte Programming Time
1.0
11
35
8
sec
sec
Excludes 00h programming
prior to erasure
300
μ
s
μ
s
sec
Word Programming Time
12
500
Byte Mode
3.6
10.8
Chip Programming Time
(Note 3)
Word Mode
3.1
9.3
sec
Excludes system-level
overhead (Note 5)
Notes:
1. Typical program and erase times assume the following conditions: 25
°
C, 5.0V VCC, 10,000 cycles. Additionally,
programming typically assumes checkerboard pattern.
2. Under worst case conditions of 90
°
C, VCC = 4.5V (4.75V for -55), 100,000 cycles.
3. The typical chip programming time is considerably less than the maximum chip programming time listed, since most bytes
program faster than the maximum byte program time listed. If the maximum byte program time given is exceeded, only
then does the device set I/O
5
= 1. See the section on I/O
5
for further information.
4. In the pre-programming step of the Embedded Erase algorithm, all bytes are programmed to 00h before erasure.
5. System-level overhead is the time required to execute the four-bus-cycle command sequence for programming. See
Table 4 for further information on command definitions.
6. The device has a guaranteed minimum erase and program cycle endurance of 10,000 cycles.
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