AT52BC1661A(T) [Preliminary]
Program Cycle Characteristics
Symbol
Parameter
Min
tBP
Word Programming Time
tBPD
Word Programming Time in Dual Programming Mode
tAS
Address Setup Time
0
tAH
Address Hold Time
35
tDS
Data Setup Time
35
tDH
Data Hold Time
0
tWP
Write Pulse Width
35
tWPH
Write Pulse Width High
35
tWC
Write Cycle Time
70
tRP
Reset Pulse Width
500
tEC
Chip Erase Cycle Time
tSEC1
Sector Erase Cycle Time (4K Word Sectors)
tSEC2
Sector Erase Cycle Time (32K Word Sectors)
tES
Erase Suspend Time
tPS
Program Suspend Time
Program Cycle Waveforms
OE
PROGRAM CYCLE
CE
tWP
tWPH
tBP
WE
tAS
tAH
tDH
A0 - A19
DATA
555
tWC
AAA
tDS
AA
55
555
ADDRESS
A0
INPUT
DATA
Typ
12
6
25
555
AA
Max
200
100
3.0
5.0
15
10
Units
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
seconds
seconds
seconds
µs
µs
Sector or Chip Erase Cycle Waveforms
OE (1)
CE
WE
tAS
tWP
tAH
tDH
tWPH
A0-A19
DATA
555
AAA
555
555
AAA
Note 2
tWC
tDS
tEC
AA
WORD 0
55
WORD 1
80
WORD 2
AA
WORD 3
55
WORD 4
Note 3
WORD 5
Notes:
1. OE must be high only when WE and CE are both low.
2. For chip erase, the address should be 555. For sector erase, the address depends on what sector is to be erased.
(See note 3 under “Command Definitions in Hex” on page 13.)
3. For chip erase, the data should be 10H, and for sector erase, the data should be 30H.
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3455A–STKD–11/04