AS29F200 Datasheet, PDF (1/20 Pages) Alliance Semiconductor Corporation – 5V 256K x 8/128K x 8 CMOS FLASH EEPROM

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• Organization: 256K×8 or 128K×16
• Sector architecture
- One 16K; two 8K; one 32K; and three 64K byte sectors
- Boot code sector architecture—T (top) or B (bottom)
- Erase any combination of sectors or full chip
• Single 5.0±0.5V power supply for read/write operations
• Sector protection
• High speed 55/70/90/120 ns address access time
• Automated on-chip programming algorithm
- Automatically programs/verifies data at specified ad-
dress
• Automated on-chip erase algorith
- Automatically preprograms/erases chip or specified sec-
tors
• 10,000 write/erase cycle endurance
• Hardware RESET pin
- Resets internal state machine to read mode
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V_CC
V_SS
RESET
RY/BY
WE
BYTE
Program/erase
control
Command
register
CE
OE
A-1
Sector protect
switches
Erase voltage
generator
Program voltage
generator
Chip enable
Output enable
Logic
DQ0–DQ15
Input/output
buffers
STB _{Data latch}
STB
V_CC detector
Timer
A0–A16
Y decoder
X decoder
Y gating
Cell matrix
• Low power consumption
- 20 mA typical read current
- 30 mA typical program current
- 300 µA typical standby current
- 1 µA typical standby current (RESET = 0)
• JEDEC standard software, packages and pinouts
- 48-pin TSOP
- 44-pin SO
• Detection of program/erase cycle completion
- DQ7 DATA polling
- DQ6 toggle bit
- RY/BY output
• Erase suspend/resume
- Supports reading data from a sector not being erased
• Low V_CC write lock-out below 2.8V
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48-pin TSOP
AS29F200
44-pin SO
NC
1
RY/BY
2
NC
3
A7
4
A6
5
A5
6
A4
7
A3
8
A2
9
A1
10
A0
11
CE
12
V_SS
13
OE
14
DQ0
15
DQ8
16
DQ1
17
DQ9
18
DQ2
19
DQ10
20
DQ3
21
DQ11
22
44
RESET
43
WE
42
A8
41
A9
40
A10
39
A11
38
A12
37
A13
36
A14
35
A15
34
A16
33
BYTE
32
V_SS
31
DQ15/A-1
30
DQ7
29
DQ14
28
DQ6
27
DQ13
26
DQ5
25
DQ12
24
DQ4
23
V_CC
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Maximum access time
t_AA
Maximum chip enable access time
t_CE
Maximum output enable access time
t_OE
29F200-55
55
55
25
29F200-70
70
70
30
29F200-90
90
90
35
29F200-120 Unit
120
ns
120
ns
50
ns
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Copyright ©1998 Alliance Semiconductor. All rights reserved.