at49lw040 ATMEL Corporation, at49lw040 Datasheet - Page 21

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

Signal Timing Parameters
Notes:
Output Timing Parameters
Input Timing Parameters
3342A–FLASH–6/03
Symbol
t
t
t
t
t
t
t
t
t
t
CHQX
CHQX
CHQZ
AVCH
DVCH
CHAX
CHDX
VSPL
CSPL
PLQZ
1. Minimum and maximum times have different loads. See PCI spec.
2. For purposes of Active/Float timing measurements, the high-Z or “off” state is defined to be when the total current delivered
3. This parameter applies to any input type (excluding CLK).
through the component pin is less than or equal to the leakage current specification.
PCI Symbol
t
t
t
t
t
t
t
t
VAL
ON
OFF
SU
H
RST
RST-CLK
RST-OFF
(Valid Input Data)
FWH[3:0]
(Float Output Data)
Parameter
CLK to Data Out
CLK to Active (Float to Active Delay)
CLK to Inactive (Active to Float Delay)
Input Set-up Time
Input Hold Time
Reset Active Time after Power Stable
Reset Active Time after CLK Stable
Reset Active to Output Float Delay
(Valid Output Data)
CLK
FWH[3:0]
FWH[3:0]
(3)
(1)
CLK
(3)
V
TEST
Inputs Valid
t
VAL
(2)
t
t
OFF
SU
(2)
(2)
t
ON
V
TEST
t
H
V
V
TH
TL
Min
100
2
2
7
0
1
V
V
V
TH
TL
MAX
AT49LW040
Max
11
28
48
Units
ms
ns
ns
ns
µs
ns
ns
ns
21