MDT90P01_09 Datasheet, PDF (5/11 Pages) Micon Design Technology Corporation – 4-bit micro-controller

MDT90P01
(4) IODS(I/O data select) : R5
Bit
Symbol
Function
0
IODS0
0: Output the PORTB0 register data to PB0(initial)
Output the PORTB1 register data to PB1(initial)
1: Output the input clock of RTCC register to PB0
Output the inverted input clock of RTCC register to PB1
1
IODS1
0: Output the PORTB3 register data to PB3(initial)
Output the PORTB2 register data to PB2(initial)
1: Output the input clock of RTCC register to PB3
Output the inverted input clock of RTCC register to PB2
2
RCOS
0: RTCC PIN can also be the clock input (initial)
1: RTCC PIN can also be the RC oscillater input
3
UNOV
Output non-overlap Set (when IODS0 or IODS1 set)
PB2 is the invert output of PB3 and PB1 is the invert output of PB0.
0: Low Action , But they are non-overlap( Will not be “low” at the same
time) output signals.
1: High Action , But they are non-overlap( Will not be “high” at the same
time) output signals.
*nonoverlap time delay(TD), See TMRH(TCS) (p7)
RTCC PIN
Fosc/4
TCE
TCS
D Q ^SET
1
Q CLR
0
0
1
Sync with
1
internal
RTCC reg
prescaler
0
clocks
PSC
Non-overlap
D
D
q
e
PORTB0/3
data
1
0
IODS
CPIO0/3
ENB
RCOS
TTL
D
D
q
e
PORTB1/2
data
1
0
IODS
CPIO1/2
ENB
TTL
PB0/3
PB1/2
This specification is subject to be changed without notice. Please visit our web site for the most updated information.
http://www.mdtic.com.tw
P. 5
2009/6 Ver. 1.1