A29002 AMIC Technology, A29002 Datasheet - Page 25

• Manufacturer Part Number: A29002
• Description: 256K X 8 Bit CMOS 5.0 Volt-only/ Boot Sector Flash Memory
• Manufacturer: AMIC Technology

Notes:
1. Typical program and erase times assume the following conditions: 25 C, 5.0V VCC, 100,000 cycles. Additionally,
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
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
6. The device has a guaranteed minimum erase and program cycle endurance of 100,000 cycles.
Timing Waveforms for Alternate CE Controlled Write Operation (
Erase and Programming Performance
(February, 2002, Version 1.0)
Sector Erase Time
Chip Erase Time
Byte Programming Time
Chip Programming Time (Note 3)
programming typically assumes checkerboard pattern.
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
Table 4 for further information on command definitions.
Addresses
Data
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.
WE
OE
CE
Parameter
t
RH
t
t
WS
GHEL
555 for program
2AA for erase
A0 for program
55 for erase
t
5
WC
= 1. See the section on I/O
t
t
CP
DS
Typ. (Note 1)
PA for program
SA for sector erase
555 for chip erase
t
t
t
DH
WH
CPH
t
3.6
35
AS
1
8
PD for program
30 for sector erase
10 for chip erase
Max. (Note 2)
5
t
AH
for further information.
25
t
BUSY
10.8
300
64
8
Data Polling
t
WHWH1 or 2
7
RESET
= Complement of Data Input, D
Unit
sec
sec
sec
s
A29002/A290021 Series
=V
PA
IH
on A29002)
AMIC Technology, Inc.
Excludes 00h programming
prior to erasure (Note 4)
Excludes system-level
overhead (Note 5)
I/O
7
Comments
OUT
D
OUT
= Array Data.