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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 Table 10.1, “USB2244/USB2244i GPIO Usage (ROM Rev 0x00),” on
page 22.
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.
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 CONDITIONMIN TYP MAX
Clock Input Capacitance C
XTAL
2 pF All pins (except USB pins
and pins under test) are tied
to AC ground.
Input Capacitance C
IN
10 pF
Output Capacitance C
OUT
20 pF