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參數(shù)資料
| 型號： | DS87C520 |
| 英文描述： | EPROM/ROM High-Speed Micro |
| 中文描述： | EPROM/ROM高速微控制器 |
| 文件頁數(shù)： | 4/45頁 |
| 文件大?。?/td> | 1415K |
| 代理商： | DS87C520 |
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DS87C520/DS83C520 EPROM/ROM High-Speed Microcontrollers
4 of 45
Figure 1. Block Diagram
PIN DESCRIPTION
PIN
PLCC
44
1, 22, 23
DIP
40
20
TQFP
38
16, 17, 39
NAME
FUNCTION
V
CC
GND
Positive Supply Voltage.
+5V
Digital Circuit Ground
Reset Input.
The RST input pin contains a Schmitt voltage input
to recognize external active high Reset inputs. The pin also
employs an internal pulldown resistor to allow for a combination
of wired OR external reset sources. An RC is not required for
power-up, as the device provides this function internally.
9
10
4
RST
18
20
14
XTAL2
19
21
15
XTAL1
Crystal Oscillator Pins.
XTAL1 and XTAL2 provide support for
parallel-resonant, AT-cut crystals. XTAL1 acts also as an input if
there is an external clock source in place of a crystal. XTAL2
serves as the output of the crystal amplifier.
29
32
26
PSEN
Program Store-Enable Output.
This active-low signal is
commonly connected to optional external ROM memory as a chip
enable.
PSEN
provides an active-low pulse and is driven high
when external ROM is not being accessed.
DS87C520/
DS83C520
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS87C520-ECL | EPROM/ROM High-Speed Micro |
| DS87C520-ENL | EPROM/ROM High-Speed Micro |
| DS87C520-MCL | EPROM/ROM High-Speed Micro |
| DS87C520-MNL | EPROM/ROM High-Speed Micro |
| DS87C520-QCL | EPROM/ROM High-Speed Micro |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS87C520_1 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM/ROM High-Speed Micro |
| DS87C520+ECL | 制造商:Maxim Integrated Products 功能描述:MICRO OTP HI SPD 44TQFP 33MHZ PB-FR - Trays |
| DS87C520+MCL | 制造商:Maxim Integrated Products 功能描述:MICRO OTP HI SPD 40PDIP 33MHZ PB-FR - Rail/Tube 制造商:Maxim Integrated Products 功能描述:IC 8BIT CPU CMOS 87C520 DIP40 |
| DS87C520+MNL | 制造商:Maxim Integrated Products 功能描述:MICRO HI SPD 40PDIP 33MHZ IND PB-FR - Rail/Tube |
| DS87C520+QCL | 制造商:Maxim Integrated Products 功能描述:MCU 8BIT CISC 16KB EPROM 5V 44PLCC - Rail/Tube |
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