pc87591l National Semiconductor Corporation, pc87591l Datasheet - Page 49

• Manufacturer Part Number: pc87591l
• Description: Lpc Mobile Embedded Controllers
• Manufacturer: National Semiconductor Corporation

Revision 1.07
2.0 Signal/Pin Description and Configuration
2.2.8
2.2.9
Interrupt and Wake-Up Inputs (ICU and MIWU)
Power and Ground
AGND
AV
GND
V
V
V
EXWINT20
EXWINT21
EXWINT22
EXWINT23
EXWINT24
EXWINT40
EXWINT45
EXWINT46
PFAIL
SWIN
BAT
CC
DD
CC
Signal
Signal
128-Pin
72
71
15, 36,
90,
101,
117
119
35,
91,100,
115
14
128-Pin
22
23
128
2
24
34
20
21
123
4
LQFP
LQFP
96
95
17, 35,
46,122,
137,
159,167
161
34, 45,
123,136,
157,166
16
176-Pin
26
29
172
176
30
44
24
25
165
2
176-Pin
LQFP
LQFP
I/O
I/O
I
I
I
I
I
I
I
I
I
Buffer
Buffer
IN
Type
PWR
PWR
PWR
GND
GND
Type
IN
IN
IN
ULR
TS
CS
CS
Power
Well
Power
Well
V
V
V
49
CC
CC
CC
Analog Ground. Used as ground for the Analog
to Digital Converter (ADC) and the Digital to
Analog Converter (DAC).
Analog 3.3V Power supply. Used as power
supply for the Analog to Digital Converter (ADC)
and the Digital to Analog Converter (DAC).
Ground. Serves for both on-chip logic, output
drivers and back-up battery circuit. See “Power
Connection and Layout Guidelines” on page 63
for details on connections with AGND.
Battery Power Supply. Provides battery backup
to the Mobile System Wake-Up Control registers,
to the RTC and to the 32 KHz crystal oscillator
when V
internal logic through a series resistor for UL
protection.
Standby Digital 3.3V Power Supply. Used for
all core-domain digital logic and all associated
I/O pins.
Digital 3.3V Power Supply. Serves as power
supply for the LPC interface and some of the
host-controlled functions.
(Continued)
External Wake-up/Interrupt Inputs. Fed into
the Multi-Input Wake-up Unit (MIWU) for wake-
up or interrupt. Can be used as external
source for wake-up or interrupt. For details on
interrupt and wake-up event assignment, see
Table 17 on page 105.
Power Fail. Non-maskable external interrupt
source. This assigned interrupt is non-
maskable only after being enabled by software
after reset.
Power Switch Input. Indicates a user request
to turn the power on or off. This signal is
connected to the Multi-Input Wake-up Unit
(MIWU) for wake-up of the core domain and
interrupt generation to the core for handling.
For details on interrupt and wake-up event
assignment, see Table 17 on page 105.
CC
is lost. The pin is connected to the
Description
Description
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