at32uc3b0512-z2ues ATMEL Corporation, at32uc3b0512-z2ues Datasheet - Page 99

• Manufacturer Part Number: at32uc3b0512-z2ues
• Description: 32-bit Avr Microcontroller
• Manufacturer: ATMEL Corporation

13.3
Figure 13-1. EIC Block Diagram
13.4
13.5
13.5.1
32059J–12/2010
Block Diagram
I/O Lines Description
Product Dependencies
I/O Lines
E X T I N T n
N M I
C L K _ S Y N C
C L K _ R C S Y S
E n a b le
C T R L
D I S
E N
Table 13-1.
In order to use this module, other parts of the system must be configured correctly, as described
below.
The external interrupt pins (EXTINTn and NMI) are multiplexed with I/O lines. To generate an
external interrupt from an external source the source pin must be configured as an input pins by
the I/O Controller. It is also possible to trigger the interrupt by driving these pins from registers in
the I/O Controller, or another peripheral output connected to the same pin.
Pin Name
NMI
EXTINTn
SCANm
P r e s c a le r
F I L T E R
F ilt e r
P o la r it y
c o n t r o l
L E V E L
M O D E
E D G E
I/O Lines Description
Pin Description
Non-Maskable Interrupt
External Interrupt
Keypad scan pin m
P R E S C
E d g e / L e v e l
D e t e c t o r
L E V E L
M O D E
E D G E
A s y n c h r o n u s
d e t e c t o r
S h if t e r
A S Y N C
S C A N
E N
Type
Input
Input
Output
P I N
I N T n
C T R L
I C R
I S R
d e t e c t
W a k e
S C A N m
M a s k
I D R
I M R
I E R
AT32UC3B
E I C _ W A K E
I R Q n
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