Pin Symbol
Type
Description
44
IOA4
Inout, Pull Up
Microcontroller address 4 / GPIO4
45
IOA5
Inout, Pull Up
Microcontroller address 5 / GPIO5
46
IOA6
Inout, Pull Up
Microcontroller address 6 / GPIO6
47
IOA7
Inout, Pull Up
Microcontroller address 7 / GPIO7
48 A16
Output
Flash
address
16
49 A17
Output
Flash
address
17
50
IOA18
Inout
Flash address 18 / GPIO10
51
IOA19
Inout
Flash address 19 / GPIO11
52
DMVSS
Ground
Ground for DRAM clock circuitry
53
DMVDD3
Power
Power for DRAM clock circuitry
54
ALE
Inout, Pull Up
Microcontroller address latch enable
55
IOOE#
Inout
Flash output enable, active low / GPIO13
56
IOWR#
Inout
Flash write enable, active low / GPIO17
57
IOCS#
Inout, Pull Up
Flash chip select, active low / GPIO18
58 DVSS
Ground
Ground
59
UP1_2
Inout, Pull Up
Microcontroller port 1-2
60
UP1_3
Inout, Pull Up
Microcontroller port 1-3
61
UP1_4
Inout, Pull Up
Microcontroller port 1-4
62
UP1_5
Inout, Pull Up
Microcontroller port 1-5
63
UP1_6
Inout, Pull Up
Microcontroller port 1-6
64 DVDD3
Power
3.3V
power
65
UP1_7
Inout, Pull Up
Microcontroller port 1-7
66
UP3_0
Inout, Pull Up
Microcontroller port 3-0
67
UP3_1
Inout, Pull Up
Microcontroller port 3-1
68
INT0#
Inout, Pull Up
Microcontroller interrupt 0, active low
69
IR
Input
IR control signal input
70 DVDD2
Power
2.5V
power
71
UP3_4
Inout
Microcontroller port 3-4
72
UP3_5
Inout
Microcontroller port 3-5
73
UWR#
Inout, Pull Up
Microcontroller write strobe, active low
74
URD#
Inout, Pull Up
Microcontroller read strobe, active low
75 XTALI
Input
Crystal
input,
27MHz
76 XTALO
Output
Crystal
output
77 DVSS
Ground
Ground
78
RD7
Inout
DRAM data 7
79
RD6
Inout
DRAM data 6
80
RD5
Inout
DRAM data 5
81
RD4
Inout
DRAM data 4
82 DVDD2
Power
2.5V
power
83
RD3
Inout
DRAM data 3
84
RD2
Inout
DRAM data 2
85
RD1
Inout
DRAM data 1
86
RD0
Inout
DRAM data 0
87
RWE#
Output
DRAM write enable, active low
88
CAS#
Output
DRAM column address strobe, active low
89
RAS#
Output
DRAM row address strobe, active low
90
RCS#
Output
DRAM chip select, active low
91
BA0
Output
DRAM bank address 0
4-4