參數(shù)資料
型號(hào)： uPSD3234
廠商： 意法半導(dǎo)體
英文描述： Flash Programmable System Device with 8032 Microcontroller Core(嵌入高速“8032微控制器核”的Flash型可編程系統(tǒng)器)
中文描述： 閃存可編程系統(tǒng)器件與8032微控制器內(nèi)核（嵌入高速“8032微控制器核”的閃存型可編程系統(tǒng)器）
文件頁(yè)數(shù)： 6/54頁(yè)
文件大?。?/td> 736K
代理商： UPSD3234
AN1886 - APPLICATION NOTE
6/54
HARDWARE DESIGN
Figure 1.
shows a simplified view of the USB input/output stage inside the μPSD. According to the USB
specification for a low-speed USB device, the minimum requirement is for one external signaling resistor
(signal D– to Vcc) to be added.
Figure 1. USB Input/Output Design inside the μPSD32xxA
Figure 2.
shows the typical and generally used USB circuit in μPSD32xxA systems (5V power supply only).
Typically three resistors (one low-speed device pull-up signaling resistor and two serial resistors (of 50 to
100
) are added.
Figure 2. Typical USB Connection Circuit for 5V (μPSD32xx) Systems
Note: 1. The 7.5k
resistor is used for low speed identification
AI09097
μPSD32xx
Bidirectional I/O Port
Schmitt Input
TTL Compatible Interface
USB
–
USB+
+
–
AI09090
PC5
USB
–
PC4
USB+
μPSD32xx
50 to 100ohm
50 to 100ohm
USB
–
VCC
USB+
7.5kohm
(1)
相關(guān)PDF資料
PDF描述
uPSD3251(中文) Flash Programmable System Devices with 8032 Microcontroller Core(帶8032微控制器內(nèi)核的Flash可編程系統(tǒng)設(shè)備)
uPSD3251 Flash Programmable System Devices with 8032 Microcontroller Core(帶8032微控制器內(nèi)核的Flash可編程系統(tǒng)設(shè)備)
uPSD3253AV-24T1T Flash Programmable System Devices with 8032 Microcontroller Core
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UPSD3253BV Flash Programmable System Devices with 8032 Microcontroller Core
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPSD32348V24V6ES 制造商:ST MICRO 功能描述:*
UPSD3234A 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core
UPSD3234A-24T1 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core
UPSD3234A-24T1T 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM
UPSD3234A-24T6 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core
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