Terminal Functions
Pin
Name
Type
Description
Alternative Function
1
ADIN1
I
ADC analog input[1]
2
ADIN0
I
ADC analog input[0]
3
AVDD33
P
ADC Analog Power supply (3.3V)
4
AVSS33
P
ADC Analog Ground
5
GP00
BD
General Purpose IO 00
External Interrupt 0
6
GP01
BD
General Purpose IO 01
External Interrupt 1
7
D0
B
External SDRAM data bus [0]
External program data bus [0]
8
D8
B
External SDRAM data bus [8]
External program data bus [8]
9
D1
B
External SDRAM data bus [1]
External program data bus [1]
10
D9
B
External SDRAM data bus [9]
External program data bus [9]
11
D2
B
External SDRAM data bus [2]
External program data bus [2]
12
D10
B
External SDRAM data bus [10]
External program data bus [10]
13
D3
B
External SDRAM data bus [3]
External program data bus [3]
14
VDD12
P
Digital power supply (1.2V)
15
VSS12
P
Digital Ground
16
NC
Not Connected
17
D11
B
External SDRAM data bus [11]
External program data bus [11]
18
D4
B
External SDRAM data bus [4]
External program data bus [4]
19
D12
B
External SDRAM data bus [12]
External program data bus [12]
20
D5
B
External SDRAM data bus [5]
External program data bus [5]
21
D13
B
External SDRAM data bus [13]
External program data bus [13]
22
D6
B
External SDRAM data bus [6]
External program data bus [6]
23
D14
B
External SDRAM data bus [14]
External program data bus [14]
24
D7
B
External SDRAM data bus [7]
External program data bus [7]
25
D15
B
External SDRAM data bus [15]
External program data bus [15]
26
AD0
O
External SDRAM address bus [0]
External program address bus [0]
27
AD1
O
External SDRAM address bus [1]
External program address bus [1]
28
AD2
O
External SDRAM address bus [2]
External program address bus [2]
29
IOVDD33
P
I/O Power supply (3.3V)
30
IOVSS33
P
I/O Ground
31
AD3
O
External SDRAM address bus [3]
External program address bus [3]
32
AD4
O
External SDRAM address bus [4]
External program address bus [4]
33
AD5
O
External SDRAM address bus [5]
External program address bus [5]
34
AD6
O
External SDRAM address bus [6]
External program address bus [6]
35
AD7
O
External SDRAM address bus [7]
External program address bus [7]
36
AD8
O
External SDRAM address bus [8]
External program address bus [8]
37
AD9
O
External SDRAM address bus [9]
External program address bus [9]
38
AD10
O
External SDRAM address bus [10]
External program address bus [10]
39
AD11
O
External SDRAM address bus [11]
External program address bus [11]
40
AD12
O
External SDRAM address bus [12]
External program address bus [12]
41
BA0
O
External SDRAM Bank selector 0
External program address bus [13]
42
BA1
O
External SDRAM Bank selector 1
External program address bus [14]
43
LDQM
O
SDRAM Lower byte data mask
External program address bus [15]
44
UDQM
O
SDRAM Upper byte data mask
External program address bus [16]
45
SDCSN
O
SDRAM Chip select
46
VDD12
P
Digital power supply (1.2V)
47
VSS12
P
Digital Ground
48
CKE
O
SDRAM clock enable
49
RASN
O
SDRAM RAS
50
IOVDD33
P
I/O Power supply (3.3V)
51
IOVSS33
P
I/O Ground
52
SDCLK
O
SDRAM clock
53
CASN
O
SDRAM CAS
54
WEN
O
SDRAM WEN
55
EAD17
B
External memory address[17]
General Purpose IO 37
56
EAD18
B
External memory address[18]
General Purpose IO 38
57
EAD19
B
External memory address[19]
General Purpose IO 39
58
EAD20
B
External memory address[20]
General Purpose IO 40
Boo
ti
ng Mode
59
EWEN
B
External memory WEN
General Purpose IO 41
60
EOEN
B
External memory OEN
General Purpose IO 42
61
ECSN
O
External memory CSN
62
GP03
B
General Purpose IO 03
External Clock (16.9344MHz)
63
GP04
B
General Purpose IO 04
SPI0 CS
64
GP05
B
General Purpose IO 05
SPI0 CK
65
GP06
B
General Purpose IO 06
SPI0 MISO
66
GP07
B
General Purpose IO 07
SPI0 MOSI
67
GP08
B
General Purpose IO 08
HUART0 DI
68
GP09
B
General Purpose IO 09
HUART0 DO
69
GP10
B
General Purpose IO 10
HUART0 RTS
External Interrupt 11
70
GP11
B
General Purpose IO 11
HUART0 CTS
External Interrupt 12
71
GP12
B
General Purpose IO 12
Chip Select 1
When GP12 is used for CS1, the external
pull-up resistor (48 k
Ω
) has to be connected
with this pin
72
GP13
B
General Purpose IO 13
UART0 RX Data
External Interrupt 8
73
GP14
B
General Purpose IO 14
UART0 TX Data
External Interrupt 9
74
GP15
B
General Purpose IO 15
UART1 RX Data
I2C SCL
75
GP16
B
General Purpose IO 16
UART1 TX Data
I2C SDA
76
GP17
B
General Purpose IO 17
SPI1 CS
77
GP18
B
General Purpose IO 18
SPI1 CK
42
Caution in
servicing
Electrical
Mechanical
Repair Information
Updating
Summary of Contents for AVR-S530BT
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