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MDT2020 Datasheet(PDF) 5 Page - Micon Design Technology Corporation |
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MDT2020 Datasheet(HTML) 5 Page - Micon Design Technology Corporation |
5 / 16 page MDT2020(DF) This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 4 2005/6 VER 1.3 (9) TMR (Time Mode Register) Bit Symbol Function Prescaler Value RTCC rate WDT rate 2—0 PS2—0 0 0 0 0 0 1 0 1 0 0 1 1 1 0 0 1 0 1 1 1 0 1 1 1 1 : 2 1 : 4 1 : 8 1 : 16 1 : 32 1 : 64 1 : 128 1 : 256 1 : 1 1 : 2 1 : 4 1 : 8 1 : 16 1 : 32 1 : 64 1 : 128 3 PSC Prescaler assignment bit : 0 — RTCC 1 — Watchdog Timer 4 TCE RTCC signal Edge : 0 — Increment on low-to-high transition on RTCC pin 1 — Increment on high-to-low transition on RTCC pin 5 TCS RTCC signal set : 0 — Internal instruction cycle clock 1 — Transition on RTCC pin (10) CPIO A, CPIO B, CPIO C (Control Port I/O Mode Register) The CPIO register is “write-only” =“0”, I/O pin in output mode; =“1”, I/O pin in input mode. (11) EPROM Option by Writer Programming: Oscillator Type Oscillator Start-up Time RC Oscillator 150 µs,20ms,40ms,80ms HFXT Oscillator 20 ms,40ms,80ms XTAL Oscillator 20ms,40 ms,80ms LFXT Oscillator 80 ms Watchdog Timer control Watchdog timer disable all the time Watchdog timer enable all the time |
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