Legacy-Free Keyboard/Embedded Controller with SPI and LPC Docking Interface
Table 28.3 Power Consumption in Various States
SUPPLY CURRENT (AMPS)
VCC2
VCC1
8051
CLOCK
(VDC)
(VDC)
STATE
STATE
MIN
TYP
MAX
COMMENTS
3.3
3.3
Run
Ring OSC
I
I
>1ma
8 ma
2 ma
PLL On
2
CC2
CC1
I C/SMBus Off
PLL Off
10 ma
Idle
I
I
>1ma
5ma
2 ma
7 ma
CC2
CC1
32 Mhz
I
I
TBD
TBD
Flash program cycle
PLL Off
CC2
CC1
0
Run
Idle
Ring OSC
I
I
CC2
CC1
2
I C/SMBus Off
8 ma
6 ma
10ma
8ma
I
I
PLL Off
CC2
CC1
2
I C/SMBus Off
Sleep
Stop
I
I
160 µa XOSEL=1
CC1
CC1
50 µa
40µa
80 µa
60 µa
XOSEL=0
0
ICC0
2.0 < Vcc0 < 4 VDC,
XOSEL=1,
ICC0
0.4µa
1.5 µa
2.0 < Vcc0 < 4 VDC, XOSEL = 0
Note: When a single-ended 32.768kHz clock source is selected (see Section 23.10, "32kHz Clock
Input". The LPC47N350 uses the XOSEL pin to select either a 32.768kHz input clock or a
32.768kHz crystal to drive the Real Time Clock Interface (Table 2.2 on page 4). When XOSEL
= ‘0’, The RTC uses a 32.768kHz crystal connected between the XTAL1 and XTAL2 pins. When
XOSEL = ‘1’, the RTC is driven by a 32.768kHz single-ended clock source connected to the
XTAL2 pin.
28.2
AC Specifications
AC Test Conditions
CAPACITANCE T = 25°C; fc = 1MHz; V = 3.3 VDC
A
cc
LIMITS
TYP
PARAMETER
SYMBOL
MIN
MAX
UNIT
TEST CONDITION
Clock Input Capacitance
Input Capacitance
CIN
CIN
20
10
20
pF
All pins except pin under
test tied to AC ground
Output Capacitance
COUT
Revision 1.1 (01-14-03)
292
SMSC LPC47N350
DATASHEET
SMSC [ SMSC CORPORATION ]
