ST7261
PIN DESCRIPTION (Cont’d)
1.1.1 PCB LAYOUT RECOMMENDATION
In the case of DIP20 devices the user should lay-
out the PCB so that the DIP20 ST7261 device and
the USB connector are centered on the same axis
ensuring that the D- and D+ lines are of equal
length. Refer to Figure 4
Figure 4. Recommended PCB Layout for USB Interface with DIP20 package
1
2
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4
5
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7
8
9
USBDM 10
20
19
18
17
16
15
14
13
12
USBVCC
11
USBDP
Ground
1.5KOhm pull-up resistor
Ground
USB Connector
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