HT45F43 datasheet(130/152 Pages) HOLTEK

130 / 152 page

Configuration Options

Configuration options refer to certain options within the MCU that are programmed into the OTP

Program Memory device during the programming process. During the development process, these

options are selected using the HT-IDE software development tools. As these options are programmed

into the device using the hardware programming tools, once they are selected they can not be changed

later by the application software. All options must be defined for proper system function, the details of

which are shown in the table.

No.

Options

Oscillator Option

OSC type selection: ERC or crystal or HIRC or EC (external clock)

00: XTAL (Filter ON)

01: ERC (Filter ON)

10: HIRC (Filter OFF)

11: EC (Filter OFF)

Low speed system oscillator selection

- fL: LXT, LIRC

HIRC frequency selection: 4MHz, 910kHz, 2MHz, 8MHz

4fS clock selection: fSUB or fSYS/4

XTAL mode selection: 455KHz or 1M~12MHz

Watchdog Options

WDT enable or disable

CLRWDT instructions: 1 or 2 instructions

LVR/LVD Options

LVR function: enable or disable

LVR voltage : 2.1V or 2.55V or 3.15V or 4.2V

RC Filter

RC filter for TMR0/1 & INT0/1, enable or disable

SPI

SIM enable/disable

SPI_WCOL: enable/disable

SPI_CSEN: enable/disable, used to enable/disable (1/0) software CSEN function

2C Debounce Time: no debounce, 1 system clock, 2 system clock

RES

I/O or RES function

Lock Options

Lock All

Partial Lock

Rev. 1.20

130

September 15, 2011

HT45F23/HT45F43

8-Bit Flash MCU with Op Amps & Comparators

HT45F43 Datasheet(PDF) 130 Page - Holtek Semiconductor Inc

HT45F43 Datasheet(HTML) 130 Page - Holtek Semiconductor Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL