D A T A S H E E T
AC CHARACTERISTICS
Power-up
V
CC
Parameter
tVCS
Description
VCC Setup Time
Test Setup
Speed
50
Unit
µs
Min
Min
Min
tVIOS
VIO Setup Time
50
µs
tRSTH
RESET# Low Hold Time
50
µs
tVCS
VCC
f
tVIOS
VIOf
tRSTH
RESET#
Figure 14.
V
Power-up Diagram
CC
Notes:
1.
V
≥ V –100 mV and V ramp rate exceeds 1 V/100 µs.
IO CC
CC
2. If the V ramp rate is less than 1 V /100 µs, a hardware reset will be required.
CC
CLK Characterization
Parameter
fCLK
tCLK
tCH
Description
CLK Frequency
66 MHz
66
54 MHz
54
Unit
Max
Min
MHz
ns
CLK Period
CLK High Time
CLK Low Time
CLK Rise Time
CLK Fall Time
15
18.5
Min
6.0
3
7.4
3
ns
ns
tCL
tCR
Max
tCF
t
CLK
t
t
CL
CH
CLK
t
t
CF
CR
Figure 15. CLK Characterization
Am29BDS128H/Am29BDS640H
56
27024B3 May 10, 2006