HT48R03 데이터 시트보기 (PDF) - Holtek Semiconductor

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HT48R03

10-Pin MSOP I/O Type 8-Bit OTP MCU

Holtek Semiconductor 

HT48R01/HT48R02/HT48R03

Configuration Options

The following table shows the various configuration options for the microcontroller. All options must be defined for

proper system functioning.

Items

Options

System oscillator selection

· Internal RC + PA5/PA6

1

· Internal RC + RTC

· External Xtal

· External RC + PA5

2

Internal RC frequency selection: 4MHz, 8MHz or 12MHz

3

WDT function: enable or disable

4

WDT clock source: WDTOSC, fSYS/4 or RTC OSC

5

CLRWDT instruction(s): one or two clear WDT instruction(s)

6

LVR function: enable or disable

7

LVR selection: 2.1V/3.15V/4.2V

8

RES or PA7 input selection

Rev. 1.00

20

December 20, 2006

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