DS83C530 데이터 시트보기 (PDF) - Dallas Semiconductor -> Maxim Integrated

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DS83C530

EPROM/ROM Micro with Real Time Clock

Dallas Semiconductor -> Maxim Integrated 

DS87C530/DS83C530 BLOCK DIAGRAM Figure 1

DS87C530/DS83C530

PIN DESCRIPTION Table 1

PLCC TQFP SIGNAL

NAME

DESCRIPTION

52

1, 25

45

18, 46

VCC

GND

VCC - +5V. Processor power supply.

GND - Processor digital circuit ground.

29

22

VCC2

VCC2 - +5V Real Time Clock supply. VCC2 is isolated from VCC to

isolate the RTC from digital noise.

26

19

GND2 GND2 - Real Time Clock circuit ground.

12

5

RST

RST - 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 XTAL1, XTAL2 - The crystal oscillator pins provide support for

24

17

XTAL1 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.

3 of 44

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