SAM3A ATMEL [ATMEL Corporation], SAM3A Datasheet - Page 9
SAM3A
Manufacturer Part Number
SAM3A
Description
AT91SAM ARM-based Flash MCU
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.SAM3A.pdf
(71 pages)
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Table 3-1.
11057BS–ATARM–13-Jul-12
11057BS–ATARM–13-Jul-12
Signal Name
PA0 - PA31
PB0 - PB31
PC0 - PC30
PD0 - PD30
PE0 - PE31
PF0 - PF6
D0 - D15
A0 - A23
NCS0 - NCS7
NWR0 - NWR1
NRD
NWE
NBS0 - NBS1
NWAIT
Signal Description List (Continued)
Function
Parallel IO Controller A
Parallel IO Controller B
Parallel IO Controller C
Parallel IO Controller D
Parallel IO Controller E
Parallel IO Controller F
Data Bus
Address Bus
Chip Select Lines
Write Signal
Read Signal
Write Enable
Byte Mask Signal
External Wait Signal
PIO Controller - PIOA - PIOB - PIOC - PIOD - PIOE
Static Memory Controller - SMC
External Memory Bus
Output
Output
Output
Output
Output
Output
Type
Input
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Active
Level
Low
Low
Low
Low
Low
Low
Reference
Voltage
VDDIO
Comments
•Schmitt Trigger
Reset State:
•PIO Input
•Internal pull-up
enabled
•Schmitt Trigger
Reset State:
•PIO Input
•Internal pull-up
enabled
•Schmitt Trigger
Reset State:
•PIO Input
•Internal pull-up
enabled
•Schmitt Trigger
Reset State:
•PIO Input
•Internal pull-up
enabled
•Schmitt Trigger
Reset State:
•PIO Input
•Internal pull-up
enabled
•Schmitt Trigger
Reset State:
•PIO Input
•Internal pull-up
enabled
Pulled-up input at
reset
0 at reset
SAM3X/A
SAM3X/A
(3)
(4)
(5)
(6)
(7)
(7)
11
11
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