at49lw040 ATMEL Corporation, at49lw040 Datasheet - Page 23

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

A/A Mux Mode Interface DC Input/Output Specifications
Notes:
Reset Operations
Notes:
AC Waveforms for Reset Operations
3342A–FLASH–6/03
Symbol
V
V
I
V
V
C
C
L
Symbol
t
t
IL
PLPH
PLRH
PIN
OH
OL
IH
IL
IN
CLK
(4)
(3)
(3)
(2)
1. Input leakage currents include high-Z output leakage for all bi-directional buffers with tri-state outputs.
2. Refer to PCI spec.
3. Inputs are not “5-volt safe.”
4. I
1. If RST is asserted when the WSM is not busy (RY/BY = 1), the reset will complete within 100 ns.
2. A reset time, t
IL
RY/BY
may be changed on IC and ID pins (up to 200 µA) if pulled against internal pull-downs. Refer to the pin descriptions.
RST
Parameter
Input High Voltage
Input Low Voltage
Input Leakage Current
Output High Voltage
Output Low Voltage
Input Pin Capacitance
CLK Pin Capacitance
Recommended Pin Inductance
Parameter
RST Pulse Low Time (If RST is tied to V
applicable.)
RST Low to Reset during Sector Erase or Program
V
V
V
V
IH
IH
IL
IL
PHAV
, is required from the latter of RY/BY or RST going high until outputs are valid.
ELECTRICAL CHARACTERISTICS IN A/A MUX MODE: Certain specifications differ
from the previous sections, when programming in A/A Mux Mode. The following subsec-
tions provide this data. Any information that is not shown here is not specific to A/A Mux
Mode and uses the FWH Mode specifications.
When the V
ID are enabled, but programming and erase functions are disabled. Placing V
V
PP
enables successful sector erase and program operations.
t
PLPH
PP
t
voltage is V
PLRH
Conditions
V
V
V
CC
CC
CC
CC
= V
= V
V
= V
, this specification is not
V
out
CC
CC
CC
CC
= V
min, I
min, I
= V
min, I
PPLK
CC
CC
(1)(2)
or GND
OH
OH
, read operations from memory or reading the Product
max,
OL
= -2.5 mA
= -100 µA
= 2 mA
0.85 V
V
0.5 V
CC
Min
-0.5
3
= 0.4
CC
Min
100
CC
min
V
AT49LW040
CC
Max
Max
+10
0.8
0.4
13
12
20
20
+ 0.5
Unit
Unit
ns
PPH1
µA
pF
pF
nH
µs
V
V
V
V
V
on
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