參數(shù)資料
型號(hào)： DS87C520-WCL
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： Microcontroller
英文描述： 8-BIT, UVPROM, 33 MHz, MICROCONTROLLER, CDIP40
封裝： LEAD FREE, WINDOWED, CERDIP-40
文件頁(yè)數(shù)： 34/43頁(yè)
文件大?。?/td> 709K
代理商： DS87C520-WCL
DS87C520/DS83C520 EPROM/ROM High-Speed Microcontrollers
4 of 43
Figure 1. Block Diagram
PIN DESCRIPTION
PIN
DIP
PLCC
TQFP
NAME
FUNCTION
40
44
38
VCC
Positive Supply Voltage. +5V
20
1, 22, 23
16, 17, 39
GND
Digital Circuit Ground
9
10
4
RST
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.
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
DS87C530-ENL 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQFP52
DS87C530-QCL 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQCC52
DS83C530-ECL 8-BIT, MROM, 33 MHz, MICROCONTROLLER, PQFP52
DS83C530-QNL 8-BIT, MROM, 33 MHz, MICROCONTROLLER, PQCC52
DS87C530-QNL 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQCC52
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DS87C530_1 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM/ROM Micro with Real Time Clock
DS87C530+ECL 制造商:Maxim Integrated Products 功能描述:MICRO OTP RTC 33MHZ 52P TQFP PB-FRR - Trays
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