LPC47M112 SMSC Corporation, LPC47M112 Datasheet - Page 182

• Manufacturer Part Number: LPC47M112
• Description: ENHANCED SUPER I/O CONTROLLER WITH LPC INTERFACE
• Manufacturer: SMSC Corporation

Enhanced Super I/O Controller with LPC Interface
Datasheet
Note 1: Internal write-protection period after Vcc passes 2.7 volts on power-up
SMSC DS – LPC47M112
NAME
NAME
t1
t2
t1
t2
A l l H o s t
A c c e s s e s
t1
t2
t3
CLOCKI
V c c
Clock Cycle Time for 14.318MHz
Clock High Time/Low Time for 14.318MHz
Clock Cycle Time for 32kHz
Clock High Time/Low Time for 32kHz
Clock Rise Time/Fall Time (not shown)
Vcc Slew from 2.7V to 0V
Vcc Slew from 0V to 2.7V
All Host Accesses After Powerup (Note 1)
DESCRIPTION
DESCRIPTION
FIGURE 9A - INPUT CLOCK TIMING
t 1
FIGURE 8 - POWER-UP TIMING
Page 182
t1
t2
MIN
125
300
100
MIN
t 2
20
TYP
t2
69.84
31.25
16.53
TYP
35
t 3
MAX
500
MAX
5
UNITS
UNITS
µs
µs
µs
Rev. 02/02/2005
ns
ns
µs
µs
ns