MDT1020 Datasheet, PDF (6/18 Pages) Micon Design Technology Corporation – 8-bit micro-controller

The CPIO register is “write-only”
“0”, I/O pin in output mode;
“1”, I/O pin in input mode.
(11) Configuration ROM :
Bit 1
Bit 0
Oscillator Type
0
0
RC Oscillator
0
1
LFXT Oscillator
1
0
XTAL Oscillator
1
1
HFXT Oscillator
MDT1020
Bit 3
Bit 2 Oscillator Start-up Time
0
0
150 µs
0
1
20 ms
1
0
40 ms
1
1
80 ms
Bit 4
Watchdog Timer control
0
Watchdog timer disable all the time
1
Watchdog timer enable all the time
(B) Program Memory
Address
000-7FF
7FF
Description
Program memory
The starting address of the power on, external reset
or WDT
7. Reset Condition for all Registers
Register Address Power-On Reset /MCLR or WDT Reset
CPIO A
1111 1111
1111 1111
CPIO B
1111 1111
1111 1111
CPIO C
1111 1111
1111 1111
TMR
--11 1111
--11 1111
Register Address Power-On Reset /MCLR or WDT Reset
This specification are subject to be changed without notice. Any latest information please preview
http;//www.mdtic.com.tw
P.6
2005/6 Ver1.4