SC65D02C40 datasheet(5/16 Pages) SILAN

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SC65D02C40

FUNCTION DESCRIPTION

Address space assignment

SC65D02C40 distributes program and data space in uniform addressing method, shown in figure 1.

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

REV:1.1

2008.12.10

Http: //www.silan.com.cn

Page 5 of 17

Oscillator circuit

SC65D02C40 provides a high-gain RP-amplifie whose input is XIN and output is XOUT. By connecting a quartz

crystal and two capacitors between XIN and XOUT, a stable self oscillator can be composed, shown in figure 2.

The oscillation waveform generated by the oscillator circuit generates the oscillator clock after it is reshaped by

the inverter. The oscillator clock provides the clock signal for WDT and code transmitting block, at the same

time as the SC65X MCU system clock after dividing frequency by 4.

40K×8 ROM

FFF0H

0000H

01A0H

019FH

6000H

5FFFH

(Unused)

SFR

0000H

0030H

002FH

(Unused)

0080H

007FH

256×8

Customer

RAM

0180H

017FH

32×8

Code transmitting

buffer

019FH

FFFFH

6000H

5FFFH

(System

reserved)

Reset vector

value

Interrupt vector

value

Reset vector

value in test

mode

Interrupt vector

value in test

mode

(System

reserved)

FFFFH

FFFEH

FFFDH

FFFCH

FFFBH

FFFAH

FFF9H

FFF8H

FFF3H

FFF2H

FFF1H

FFF0H

FFF7H

FFF6H

FFF5H

FFF4H

0100H

00FFH

Figure 1 – Address assignment

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