SMSC USB2244 Manual De Usuario
Ultra Fast USB 2.0 SD/MMC Flash Media Controller
Datasheet
SMSC USB2244/USB2244i
19
Revision 1.0 (05-27-08)
DATASHEET
the settings listed in
.
Note 7.9
The 3.3V supply should be at least at 75% of its operating condition before the 1.8V supply
is allowed to ramp up.
is allowed to ramp up.
7.4
Capacitance
T
A
= 25°C; fc = 1MHz; V
DD,
V
DDP
= 1.8V
Table 7.1 Pin Capacitance
PARAMETER
SYMBOL
LIMITS
UNIT
TEST CONDITION
MIN
TYP
MAX
Clock Input Capacitance
C
XTAL
2
pF
All pins (except USB pins
and pins under test) are tied
to AC ground.
and pins under test) are tied
to AC ground.
Input Capacitance
C
IN
10
pF
Output Capacitance
C
OUT
20
pF