CY7C68013A, CY7C68014A
CY7C68015A, CY7C68016A
Table 11. FX2LP Pin Descriptions (continued)
128 100 56 56 56
Name
TXD0
Type Default
Description
TQFP TQFP SSOP QFN VFBGA
50
40
Output
H
TXD0 is the active-HIGH TXD0 output from 8051
UART0, which provides the output clock in sync mode,
and the output data in async mode.
42
41
CS#
Output
Output
H
H
CS# is the active-LOW chip select for external memory.
32
31
WR#
WR# is the active-LOW write strobe output for external
memory.
40
38
RD#
OE#
Output
Output
H
H
RD# is the active-LOW read strobe output for external
memory.
OE# is the active-LOW output enable for external
memory.
33
27
79
21
51
14
44
2H
7B
Reserved
WAKEUP
Input
Input
N/A Reserved. Connect to ground.
101
N/A USB Wakeup. If the 8051 is in suspend, asserting this
pin starts up the oscillator and interrupts the 8051 to
enable it to exit the suspend mode. Holding WAKEUP
asserted inhibits the EZ-USB® chip from suspending.
This pin has programmable polarity (WAKEUP.4).
36
37
29
30
22
23
15
16
3F
SCL
SDA
OD
OD
Z
Clock for the I2C interface. Connect to VCC with a 2.2K
resistor, even if no I2C peripheral is attached.
3G
Z
Data for I2C compatible interface. Connect to VCC
with a 2.2K resistor, even if no I2C compatible
peripheral is attached.
2
1
6
55
11
17
5A
1G
7E
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
Power
Power
Power
Power
Power
Power
Power
Power
Power
N/A VCC. Connect to 3.3V power source.
N/A VCC. Connect to 3.3V power source.
N/A VCC. Connect to 3.3V power source.
N/A VCC. Connect to 3.3V power source.
N/A VCC. Connect to 3.3V power source.
N/A VCC. Connect to 3.3V power source.
N/A VCC. Connect to 3.3V power source.
N/A VCC. Connect to 3.3V power source.
N/A VCC. Connect to 3.3V power source.
26
20
33
38
49
53
66
78
85
18
24
43
48
64
34
27
8E
68
81
39
50
32
43
5C
5B
100
107
3
2
7
56
12
4B
1H
GND
GND
GND
GND
GND
GND
GND
GND
GND
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
N/A Ground.
N/A Ground.
N/A Ground.
N/A Ground.
N/A Ground.
N/A Ground.
N/A Ground.
N/A Ground.
N/A Ground.
27
21
39
48
50
65
75
94
99
19
49
58
33
35
26
28
7D
8D
65
80
93
48
4
41
53
4C
4A
116
125
14
15
16
13
14
15
NC
NC
NC
N/A
N/A
N/A
N/A No Connect. This pin must be left open.
N/A No Connect. This pin must be left open.
N/A No Connect. This pin must be left open.
Document #: 38-08032 Rev. *N
Page 28 of 62
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