MDT10C23
(9) TMR (Time Mode Register)
Bit
Symbol
Prescaler Value
0 0
0
0 0 1
0 1 0
0 1 1
2—0
PS2—0
1 0 0
1 0 1
1 1 0
Function
RTCC rate
1:2
1:4
1:8
1 : 16
1 : 32
1 : 64
1 : 128
WDT rate
1:1
1:2
1:4
1:8
1 : 16
1 : 32
1 : 64
3
PSC
4
TCE
5
TCS
1 1 1
1 : 256
1 : 128
Prescaler assignment bit :
0
—
RTCC
1
—
Watchdog Timer
RTCC signal Edge :
0
—
Increment on low-to-high transition on RTCC pin
1
—
Increment on high-to-low transition on RTCC pin
RTCC signal set :
0
—
Internal instruction cycle clock
1
—
Transition on RTCC pin
(10) CPIO A, CPIO B (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) ROM Option by writer programming :
Oscillator Type
RC
Oscillator
Oscillator Start-up Time
150
µs
20 ms
40 ms
80 ms
LFXT Oscillator
XTAL Oscillator
HFXT Oscillator
Watchdog Timer control
Watchdog timer disable all the time
Watchdog timer enable all the time
Power Edge Detect
PED Disable
PED Enable
This specification are subject to be changed without notice. Any latest information
please preview http;//www.mdtic.com.tw
P. 7
2005/6
Ver. 1.2