CY7C6431x
CY7C64345, CY7C6435x
Document Number: 001-12394 Rev *G Page 8 of 28
48-Pin Part Pinout
Figure 3. CY7C64355/CY7C64356 48-Pin enCoRe V USB Device
QFN
(Top View)
P0[1]
Vss
P0[3]
P0[5]
P0[7]
Vdd
P0[6]
10
11
12
P2[7]
P2[5]
P2[3]
P2[1]
P4[3]
P4[1]
P3[7]
P3[5]
P3[3]
35
34
33
32
31
30
29
28
27
26
25
36
48
47
46
45
44
43
42
41
40
39
38
37 P0[2]
P0[0]
P2[6]
P2[4]
P2[2]
P2[0]
P3[2]
P3[0]
XRES
P1[6]
P0[4]
1
2
3
4
5
6
7
8
9
13
14
15
16
17
18
19
20
21
22
23
24
NC
NC
P1[3]
P1[1]
Vss
D+
D-
Vdd
P1[0]
P1[2]
P1[4]
NC
P3[1]
P1[7]
P1[5]
P3[4]
P3[6]
P4[0]
P4[2]
NC
NC
Table 3.48-Pin Part Pinout (QFN)
Pin No. Type Pin Name Description
1NCNC No connection
2I/O P2[7] Digital I/O
3I/O P2[5] Digital I/O, Crystal Out (Xout)
4I/O P2[3] Digital I/O, Crystal In (Xin)
5I/O P2[1] Digital I/O
6I/O P4[3] Digital I/O
7I/O P4[1] Digital I/O
8I/O P3[7] Digital I/O
9I/O P3[5] Digital I/O
10 I/O P3[3] Digital I/O
11 I/O P3[1] Digital I/O
12 IOHR P1[7] Digital I/O, I2C SCL, SPI SS
13 IOHR P1[5] Digital I/O, I2C SDA, SPI MISO
14 NC NC No connection
15 NC NC No connection
16 IOHR P1[3] Digital I/O, SPI CLK
17 IOHR P1[1](1, 2) Digital I/O, ISSP CLK, I2C SCL, SPI MOSI
18 Power Vss Supply ground
19 I/O D+ USB
20 I/O D– USB
21 Power Vdd Supply voltage
22 IOHR P1[0](1, 2) Digital I/O, ISSP DATA, I2C SDA, SPI CLK
23 IOHR P1[2] Digital I/O,
24 IOHR P1[4] Digital I/O, optional external clock input (EXTCLK)
25 IOHR P1[6] Digital I/O
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