參數(shù)資料
型號： uPSD3251
廠商： 意法半導體
英文描述： 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)設備)
中文描述： 閃存可編程系統(tǒng)設備與8032微控制器內(nèi)核（帶8032微控制器內(nèi)核的閃存可編程系統(tǒng)設備）
文件頁數(shù)： 44/128頁
文件大?。?/td> 1566K
代理商： UPSD3251
μPSD3251F
44/128
Figure 16. PORT Type and Description (Part 2)
OSCILLATOR
The oscillator circuit of the μPSD3251F device is a
single stage inverting amplifier in a Pierce oscilla-
tor configuration (see Figure 17). The circuitry be-
tween XTAL1 and XTAL2 is basically an inverter
biased to the transfer point. Either a crystal or ce-
ramic resonator can be used as the feedback ele-
ment to complete the oscillator circuit. Both are
operated in parallel resonance.
XTAL1 is the high gain amplifier input, and XTAL2
is the output. To drive the μPSD3251F device ex-
ternally, XTAL1 is driven from an external source
and XTAL2 left open-circuit.
Figure 17. Oscillator
AI07863
Symbol
Circuit
Function
In/
Out
PORT1 <3:0>,
PORT3,
PORT4<7:3,1:0>
I/O
PORT4.2
Bidirectional I/O port with
internal pull-ups
Schmitt input
CMOS compatible interface
Bidirectional I/O port with internal
pull-ups
Schmitt input.
TTL compatible interface
PORT1 < 7:4 >
I/O
Bidirectional I/O port with
internal pull-ups
Schmitt input
CMOS compatible interface
Analog input option
I/O
an_enb
AI06620
XTAL1
XTAL2
8 to 40 MHz
XTAL1
XTAL2
External Clock
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相關代理商/技術(shù)參數(shù)
參數(shù)描述
uPSD3251MEB 制造商:P&S 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core 制造商:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core
UPSD3253 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 256Kbit SRAM
UPSD3253A-24T1 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core
UPSD3253A-24T1T 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core
UPSD3253A-24T6 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core
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