參數(shù)資料
型號: uPSD3412C-24U6T
廠商: 意法半導(dǎo)體
英文描述: Flash Programmable System Devices with 8032 Microcontroller Core and 16Kbit SRAM
中文描述: 閃存可編程系統(tǒng)設(shè)備與8032微控制器核心和16Kbit SRAM的
文件頁數(shù): 47/152頁
文件大?。?/td> 796K
代理商: UPSD3412C-24U6T
47/152
UPSD3212C, UPSD3212CV
Figure 18. PORT Type and Description (Part 2)
OSCILLATOR
The oscillator circuit of the uPSD321X Devices is
a single stage inverting amplifier in a Pierce oscil-
lator configuration (see Figure 19). The circuitry
between XTAL1 and XTAL2 is basically an invert-
er biased to the transfer point. Either a crystal or
ceramic resonator can be used as the feedback el-
ement 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 uPSD321X Devices ex-
ternally, XTAL1 is driven from an external source
and XTAL2 left open-circuit.
Figure 19. Oscillator
AI07428
Symbol
Circuit
Function
In/
Out
PORT1 <3:0>,
PORT3,
PORT4<7:3,1:0>
PORT2
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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