AT91M40400 View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'AT91M40400' PDF : 116 Pages View PDF
Table 7. Multiplexed Parallel I/Os
PIO Controller
Bit
Number(1)
Port Name
Port Name
0
P0
TCLK0
1
P1
TIOA0
2
P2
TIOB0
3
P3
TCLK1
4
P4
TIOA1
5
P5
TIOB1
6
P6
TCLK2
7
P7
TIOA2
8
P8
TIOB2
9
P9
IRQ0
10
P10
IRQ1
11
P11
IRQ2
12
P12
FIQ
13
P13
SCK0
14
P14
TXD0
15
P15
RXD0
16
P16
–
17
P17
–
18
P18
–
19
P19
–
20
P20
SCK1
21
P21
TXD1
22
P22
RXD1
23
P23
–
24
P24
–
25
P25
MCKO
26
P26
NCS2
27
P27
NCS3
28
P28
A20/CS7
29
P29
A21/CS6
30
P30
A22/CS5
31
P31
A23/CS4
Peripheral
Signal Description
Timer 0 Clock signal
Timer 0 Signal A
Timer 0 Signal B
Timer 1 Clock signal
Timer 1 Signal A
Timer 1 Signal B
Timer 2 Clock signal
Timer 2 Signal A
Timer 2 Signal B
External Interrupt 0
External Interrupt 1
External Interrupt 2
Fast Interrupt
USART 0 clock signal
USART 0 transmit data signal
USART 0 receive data signal
–
–
–
–
USART 1 clock signal
USART 1 transmit data signal
USART 1 receive data signal
–
–
Master Clock Output
Chip Select 2
Chip Select 3
Address 20/Chip Select 7
Address 21/Chip Select 6
Address 22/Chip Select 5
Address 23/Chip Select 4
Signal Direction
input
bi-directional
bi-directional
input
bi-directional
bi-directional
input
bi-directional
bi-directional
input
input
input
input
bi-directional
output
input
–
–
–
–
bi-directional
output
input
–
–
output
output
output
output
output
output
output
Reset State
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
PIO Input
MCKO
NCS2
NCS3
A20
A21
A22
A23
Note: 1. Bit number refers to the data bit which corresponds to this signal in each of the User Interface registers.
Pin
Number
49
50
51
54
55
56
57
58
59
60
63
64
66
67
68
69
70
71
72
73
74
75
76
83
84
85
99
100
25
26
29
30
52
AT91M40400
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