HT48R03 Holtek Semiconductor, HT48R03 Datasheet - Page 20

• Manufacturer Part Number: HT48R03
• Description: (HT48R01 - HT48R03) 10-Pin MSOP I/O Type 8-Bit OTP MCU
• Manufacturer: Holtek Semiconductor

Configuration Options
The following table shows the various configuration options for the microcontroller. All options must be defined for
proper system functioning.
Rev. 1.00
Items
1
2
3
4
5
6
7
8
System oscillator selection
Internal RC frequency selection: 4MHz, 8MHz or 12MHz
WDT function: enable or disable
WDT clock source: WDTOSC, f
CLRWDT instruction(s): one or two clear WDT instruction(s)
LVR function: enable or disable
LVR selection: 2.1V/3.15V/4.2V
RES or PA7 input selection
Internal RC + PA5/PA6
Internal RC + RTC
External Xtal
External RC + PA5
SYS
/4 or RTC OSC
20
Options
HT48R01/HT48R02/HT48R03
December 20, 2006