MC80F0424 Datasheet, PDF (46/135 Pages) List of Unclassifed Manufacturers – 8-BIT SINGLE-CHIP MICROCONTROLLERS

MC80F0424/0432/0448
Preliminary
R3 Data Register
ADDRESS: 0C6_H
RESET VALUE: 00_H
R3
R37 R36 R35 R34 R33 R32 R31 R30
Input / Output data
R3 Direction Register
R3IO
ADDRESS: 0C7_H
RESET VALUE: 00_H
Port Direction
0: Input
1: Output
R4 and R4IO register: R4 is an 8-bit CMOS bidirectional I/O
port (address 0C8_H). Each I/O pin can independently used as an
input or an output through the R4IO register (address 0C9_H). The
on-chip pull-up resistor can be connected to them in 1-bit units
with a pull-up selection register 4 (PU4).
In addition, Port R4 is multiplexed with various special features.
After reset, this value is “0”, port may be used as normal I/O port.
To use alternate function, write “1” in the corresponding bit of
ASIMR and BRGCR register.
Port Pin
R40
R41
R42
R43
R44
R45
R46
R47
Alternate Function
-
-
SCK (SIO clock input/output)
SI (SIO data input)
SO (Serial1 data output)
ACLK (Asynchronous serial clock input)
RxD (Asynchronous serialdata input)
TxD (Asynchronous serial data output)
R5 and R5IO register: R5 is an 5-bit CMOS bidirectional I/O
port (address 0CA_H). Each I/O pin can independently used as an
input or an output through the R5IO register (address 0CB_H).
In addition, Port R5 is multiplexed with various special features.
The control register PSR0 (address 0F8_H) and PSR1 (address
0F9_H) controls the selection of alternate function. After reset, this
value is “0”, port may be used as normal I/O port.
To use alternate function such as external interrupt, event counter
input, timer clock output or PWM output, write “1” in the corre-
sponding bit of PSR0 or PSR1. Regardless of the direction regis-
ter R5IO, PSR0 or PSR1 is selected to use as alternate functions,
port pin can be used as a corresponding alternate features.
R4 Data Register
ADDRESS: 0C8_H
RESET VALUE: 00_H
R4
R47 R46 R45 R44 R43 R42 R41 R40
Input / Output data
R4 Direction Register
R4IO
ADDRESS: 0C9_H
RESET VALUE: 00_H
Port Direction
0: Input
1: Output
R4 Pull-up
Selection Register
PU4
ADDRESS: 0FE_H
RESET VALUE: 00_H
Pull-up Resister Selection
0: Disable
1: Enable
Port Pin
R50
R51
R52
R53
R54
Alternate Function
INT3 (External Interrupt 3)
EC1 (Event counter input to Counter 2)
T2O (Timer 2 Clock-out)
PWM1O (PWM1 output) / T1O
PWM3O (PWM3 output) / T3O
R5 Data Register
R5
---
ADDRESS: 0CA_H
RESET VALUE: ---00000_B
R54 R53 R52 R51 R50
Input / Output data
R5 Direction Register
R5IO ^{- - -}
ADDRESS: 0CB_H
RESET VALUE: ---00000_B
Port Direction
0: Input
1: Output
42
MAR. 2005 Ver 0.2