MDT90P01 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 PORTB3 register data to PB3(initial)
1: Output the input clock of RTCC register to PB0
Output the inverted input clock of RTCC register to PB3
1
IODS1
0: Output the PORTB1 register data to PB1(initial)
Output the PORTB2 register data to PB2(initial)
1: Output the input clock of RTCC register to PB1
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
——
Unimplemented
RTCC PIN
Fosc/4
TCE
RCOS
0
1
TCS
1
prescaler 0
PSC
Sync with
internal
clocks
RTCC reg
D
D
q
e
PORTB0/1
data
1
0
IODS
CPIOB0/1
ENB
TTL
D
D
q
e
PORTB3/2
data
1
0
IODS
CPIOB3/2
ENB
TTL
(5) PORT B : R6
PB3~PB0, I/O Register
PB0/1
PB3/2
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
2008/5 Ver. 1.0