at49lw040 ATMEL Corporation, at49lw040 Datasheet - Page 22

• Manufacturer Part Number: at49lw040
• Description: At49lw040 4-megabit Firmware Hub Flash Memory
• Manufacturer: ATMEL Corporation

Interface Measurement Condition Parameters
Note:
Reset Operations
Note:
AC Waveform for Reset Operation
Sector Programming Times
Notes:
22
Symbol
V
V
V
V
Input Signal Edge Rate
Symbol
t
Parameter
Byte Program Time
Sector Program Time
Sector Erase Time
PLPH
TH
TL
TEST
MAX
(1)
(1)
(1)
(1)
1. The input test environment is done with 0.1 V
1. A reset latency of 20 µs will occur if a reset procedure is performed during a programming or erase operation.
1. Typical values measured at T
2. Excludes system-level overhead.
AT49LW040
overdrive than this. V
testing may use different voltage values, but must correlate results back to these parameters.
(2)
Parameter
RST or INIT Pulse Low Time (If RST or INIT is tied to V
specification is not applicable)
(2)
(2)
RST
MAX
V
V
IH
IL
specifies the maximum peak-to-peak waveform allowed for measuring the input timing. Production
A
= +25 C and nominal voltages.
t
PLPH
CC
of overdrive over V
Typ
30.0
2.0
0.8
(1)
CC
, this
3.3V V
IH
and V
PP
IL
0.6 V
0.2 V
0.4 V
0.4 V
Value
. Timing parameters must be met with no more
CC
CC
CC
CC
Max
20.0
300
1.0
Min
100
1 V/ns
Max
Units
3342A–FLASH–6/03
V
V
V
V
Unit
sec
sec
µs
Unit
ns