A SERVICE OF

logo

Open as PDF
next previous
DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock
4 of 47
Figure 1. Block Diagram
PIN DESCRIPTION
PIN
PLCC TQFP
NAME FUNCTION
52 45 V
CC
+5V Processor Power Supply
1, 25 18, 46 GND
Processor Digital Circuit Ground
29 22 V
CC2
+5V RTC Supply. V
CC2
is isolated from V
CC
to isolate the RTC from digital noise.
26 19 GND2
RTC Circuit Ground
12 5 RST
Reset Input. This 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.
23 16 XTAL2
24 17 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 is the output of the crystal amplifier.
DS87C530/
DS83C530
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW
WWW.100Y.COM.TW WWW.100Y.COM.TW WWW.100Y.COM.TW