CY8CTST120
Document Number: 001-46932 Rev. *B
Page 10 of 32
Pin
No.
Name
Description
Pin
No.
Name
Description
23
IO
MP5[1]
73
NC
No connection. Leave floating.
24
IO
M
P1[7]
I2C Serial Clock (SCL).
74
IO
I
P0[0]
Analog column mux input.
25
NC
No Connection. Leave floating.
75
NC
No connection. Leave floating.
26
NC
No Connection. Leave floating.
76
NC
No connection. Leave floating.
27
NC
No Connection. Leave floating.
77
IO
I, M
P0[2]
Analog column mux input and column output.
28
IO
P1[5]
I2C Serial Data (SDA)
78
NC
No connection. Leave floating.
29
IO
P1[3]
79
IO
I, M
P0[4]
Analog column mux input and column output.
30
IO
P1[1]
Crystal (XTALin), I2C Serial Clock (SCL),
ISSP SCLK[3].
80
NC
No connection. Leave floating.
31
NC
No Connection. Leave floating.
81
IO
I, M
P0[6]
Analog column mux input.
32
Power
Vss
Ground connection.
82
Power
Vdd
Supply voltage. Bypass to ground with 0.1 uF
capacitor.
33
USB
D+
83
NC
No connection. Leave floating.
34
USB
D-
84
Power
Vss
Ground. Connect to circuit ground.
35
Power
Vdd
Supply voltage. Bypass to ground with 0.1 uF
capacitor.
85
NC
No connection. Leave floating.
36
IO
P7[7]
86
NC
No Connection. Leave floating.
37
IO
P7[6]
87
NC
No Connection. Leave floating.
38
IO
P7[5]
88
NC
No Connection. Leave floating.
39
IO
P7[4]
89
NC
No Connection. Leave floating.
40
IO
P7[3]
90
NC
No Connection. Leave floating.
41
IO
P7[2]
91
NC
No Connection. Leave floating.
42
IO
P7[1]
92
NC
No Connection. Leave floating.
43
IO
P7[0]
93
NC
No Connection. Leave floating.
44
NC
No Connection. Leave floating.
94
NC
No Connection. Leave floating.
45
NC
No Connection. Leave floating.
95
IO
I, M
P0[7]
Analog column mux input.
46
NC
No Connection. Leave floating.
96
NC
No Connection. Leave floating.
47
NC
No Connection. Leave floating.
97
IO
IO, M
P0[5]
Analog column mux input and column output.
48
IO
P1[0]
Crystal (XTALout), I2C Serial Data (SDA),
ISSP SDATA[3].
98
NC
No Connection. Leave floating.
49
IO
P1[2]
99
IO
IO, M P0[3]
Analog column mux input and column output.
50
IO
P1[4]
Optional External Clock Input (EXTCLK).
100
NC
No Connection. Leave floating.
LEGEND A = Analog, I = Input, O = Output, NC = No Connection, M = Analog Mux Input, OCD = On-Chip Debugger.
Table 3. 100-Pin Part Pinout (TQFP) (continued)
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