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CY7C6431x
CY7C64345, CY7C6435x
Document Number: 001-12394 Rev. *F
Page 9 of 29
48-Pin Part Pinout
Figure 3. CY7C64355/CY7C64356 48-Pin enCoRe V USB Device
QFN
(Top View)
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
P2[6]
P2[4]
P2[2]
P2[0]
P3[2]
P3[0]
XRES
P1[6]
1
2
3
4
5
6
7
8
9
NC
P3[1]
P1[7]
P3[4]
P3[6]
P4[0]
P4[2]
Table 3. 48-Pin Part Pinout (QFN)
Pin No.
Type
Pin Name
Description
1NC
NC
No connection
2
IO
P2[7]
Digital IO
3
IO
P2[5]
Digital IO, Crystal Out (Xout)
4
IO
P2[3]
Digital IO, Crystal In (Xin)
5
IO
P2[1]
Digital IO
6
IO
P4[3]
Digital IO
7
IO
P4[1]
Digital IO
8
IO
P3[7]
Digital IO
9
IO
P3[5]
Digital IO
10
IO
P3[3]
Digital IO
11
IO
P3[1]
Digital IO
12
IOHR
P1[7]
Digital IO, I2C SCL, SPI SS
13
IOHR
P1[5]
Digital IO, I2C SDA, SPI MISO
14
NC
NC
No connection
15
NC
NC
No connection
16
IOHR
P1[3]
Digital IO, SPI CLK
17
IOHR
P1[1](1, 2)
Digital IO, ISSP CLK, I2C SCL, SPI MOSI
18
Power
Vss
Supply ground
19
IO
D+
USB
20
IO
D–
USB
21
Power
Vdd
Supply voltage
22
IOHR
P1[0](1, 2)
Digital IO, ISSP DATA, I2C SDA, SPI CLK
23
IOHR
P1[2]
Digital IO,
24
IOHR
P1[4]
Digital IO, optional external clock input (EXTCLK)
25
IOHR
P1[6]
Digital IO
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