Specifications
CY7C6431x
CY7C6434x
CY7C6435x
Document Number: 001-12394 Rev. *R Page 9 of 40
Pin Configuration
The enCoRe V USB device is available in a variety of packages which are listed and illustrated in the subsequent tables.
16-pin Part pinout
Figure 6. CY7C64315/CY7C64316 16-pin enCoRe V USB Device
D+
QFN
(Top View)
P2[3]
P1[5]
P1[1]
V
SS
16
15
14
13
P0[1]
P0[3]
P0[7]
P0[4]
5
6
7
8
V
DD
P1[0]
P1[7]
P1[4]
XRES
P2[5]
D–
1
2
3
4
12
11
10
9
Table 1. Pin Definitions – 16-pin Part Pinout (QFN)
Pin No. Type Name Description
1 I/O P2[3] Digital I/O, crystal input (Xin)
2 I/OHR P1[7] Digital I/O, SPI SS, I
2
C SCL
3 I/OHR P1[5] Digital I/O, SPI MISO, I
2
C SDA
4 I/OHR P1[1]
[1, 2]
Digital I/O, ISSP CLK, I
2
C SCL, SPI MOSI
5 Power V
SS
Ground connection
6 USB line D+ USB PHY
7 USB line D– USB PHY
8 Power V
DD
Supply
9 I/OHR P1[0]
[1, 2]
Digital I/O, ISSP DATA, I
2
C SDA, SPI CLK
10 I/OHR P1[4] Digital I/O, optional external clock input (EXTCLK)
11 Input XRES Active high external reset with internal pull-down
12 I/OH P0[4] Digital I/O
13 I/OH P0[7] Digital I/O
14 I/OH P0[3] Digital I/O
15 I/OH P0[1] Digital I/O
16 I/O P2[5] Digital I/O, crystal output (Xout)
LEGEND I = Input, O = Output, OH = 5 mA High Output Drive, R = Regulated Output
Notes
1. During power up or reset event, device P1[0] and P1[1] may disturb the I
2
C bus. Use alternate pins if issues are encountered.
2. These are the in-system serial programming (ISSP) pins that are not High Z at power on reset (POR).