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ST7261 数据表(PDF) 7 Page - STMicroelectronics

部件名 ST7261
功能描述  LOW SPEED USB 8-BIT MCU WITH 3 ENDPOINTS, ROM MEMORY, LVD, WDG, TIMER
PDF  80 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST7261 数据表(HTML) 7 Page - STMicroelectronics

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PIN DESCRIPTION (Cont’d)
2.1 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
14
13
12
11
15
16
17
18
USBVCC
USBDP
1
2
3
4
5
6
7
8
9
10
19
20
USBDM
USB Connector
Ground
Ground
1.5KOhm pull-up resistor



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