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AT91SAM7A2-AI датащи(PDF) 5 Page - ATMEL Corporation

номер детали AT91SAM7A2-AI
подробное описание детали  ARM Thumb - based Microcontrollers
PDF  15 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT91SAM7A2-AI датащи(HTML) 5 Page - ATMEL Corporation

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AT91SAM7A2 - Summary
6021AS–ATARM–03/04
Signal Description
Table 2. Signal Description
Module
Name
Function
Type
Active
Level Comments
EBI
ADD[19:1]
External address bus
O
(Z)(1)
The EBI is tri-stated when NRESET is at a
logical low level.
Internal pull-downs on data bus bits
ADD0/NLB
External address line line/
Lower byte enable
OL (Z)
ADD20/CS3
External address line/ Chip select
O
H (Z)
D[15:0]
External data bus
I/O
(Z)
NOE
Output enable
O
L (Z)
NWR0/NWE
Write enable
O
L (Z)
NCS[2:0]
Chip select lines
O
L (Z)
NWR1/NUB
Upper byte enable
O
L (Z)
NWAIT
External Wait
I
L
Disable at reset, multiplexed with UPIO30
CORECLK
Core CLock
O
Disable at reset, multiplexed with UPIO31
GIC
IRQ[1:0]
External interrupt lines
I
FIQ
Fast interrupt line
I
Power-on
Reset
NRESET
Hardware reset input
I
L
Schmitt input with internal filter
Master Clock
MCKI
Master clock input
I
Connected to external crystal (4 to 6 Mhz)
MCKO
Master clock output
O
PLLRC
PLL RC network input
I
32.768 kHz
clock
RTCKI
32.768 KHz clock input
I
Connected to external 32.768 Khz crystal
RTCKO
32.768 KHz clock output
O
PIO
UPIO[31:0]
General purpose I/O
I/O
(Z)
USART0
SCK0/MPIO
USART0 clock line
I/O
(Z)
Multiplexed with general purpose I/O
RXD0/MPIO
USART0 receive line
I/O
(Z)
Multiplexed with general purpose I/O
TXD0/MPIO
USART0 transmit line
I/O
(Z)
Multiplexed with general purpose I/O
USART1
SCK1/MPIO
USART1 clock line
I/O
(Z)
Multiplexed with general purpose I/O
RXD1/MPIO
USART1 receive line
I/O
(Z)
Multiplexed with general purpose I/O
TXD1/MPIO
USART1 transmit line
I/O
(Z)
Multiplexed with general purpose I/O
Capture0
CAPT0
Capture input
I
Capture1
CAPT1
Capture input
I
PWM
PWM[3:0]
Pulse Width Modulation output
O
(L)
Timer T0
T0TIOA[2:0]/MPIO Capture/waveform I/O
I/O
(Z)
Multiplexed with a general purpose I/O
T0TIOB[2:0]/MPIO Trigger/waveform I/O
I/O
(Z)
Multiplexed with a general purpose I/O
T0TIOCLK[2:0]/MP
IO
External clock/trigger/input
I/O
(Z)
Multiplexed with a general purpose I/O



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