Overview Of I/O Port - Fujitsu MB90460 Series Hardware Manual

CHAPTER 9 I/O PORT
9.1

Overview of I/O Port

An I/O port can be used as a general-purpose I/O port (parallel I/O port). The MB90460/
465 series has 7 ports (51 lines). The ports are also used for resource I/O pins
(peripheral function I/O pins).
■ I/O Port Functions
Each I/O port outputs data from the CPU to the I/O pins or inputs signals from the I/O pins to the CPU as
directed by the port data register (PDR). Each I/O port can also designate the direction of a data flow
(input or output) at the I/O pins in bit units using the port data direction register (DDR). The function of
each port and the resources using it are described below:
• Port 0: General-purpose I/O port/resource (Waveform sequencer*/PWC0*)
• Port1: General-purpose I/O port/resource (External interrupt/Waveform
• Port 2: General-purpose I/O port/resource (16-bit reload timer/PWC1/Input capture)
• Port 3: General-purpose I/O port/resource (Waveform generator/PPG1*/PPG0)
• Port 4: General-purpose I/O port/resource (UART0/Waveform sequencer*/PPG2)
• Port 5: General-purpose I/O port/resource (A/D converter)
• Port6: General-purpose I/O port/resource (UART1/External interrupt)
Table 9.1-1 summarizes the functions of individual port.
Table 9.1-1 Functions of Individual Port
Output
Port Pin Input form
form
P00/OPT0
Port 0 to P07/ CMOS
PWO0
CMOS
pull-up
resistor
P10/INT0/
selectable
Port 1 DTT0 to
P17/FRCK
CMOS
(hysteresis)
P20/TIN1
Port 2
to P27/IN3
P30/RT00
Port 3 CMOS CMOS
to P37/PPG0
P40/SIN CMOS
Port 4
to P46/PPG2 (hysteresis)
P50/AN0 Analog/
Port 5 CMOS
to P57/AN7 CMOS
P60/SIN1 CMOS
Port 6 CMOS
to P63/INT7 (hysteresis)
*: Pin names not applicable to MB90465 series
164
sequencer*/Waveform generator/16-bit reload timer 0)
bit bit bit
Function
15 14 13
General
– – –
I/O port
Resource – – –
General
P17 P16 P15
I/O port
INT6/ INT5/
Resource
FRCK
TO0 TIN0
General
– – –
I/O port
Resource
– – –
General
P37 P36 P35
I/O port
Resource PPG0 PPG1* RTO5 RTO4 RTO3
General
– – –
I/O port
Resource – – –
General
P57 P56 P55
I/O port
Analog
AN7 AN6 AN5
input
General
– – –
I/O port
Resource – – –
bit bit bit
bit9 bit8
12 11 10
– – – – –
– – – – –
P14 P13 P12 P11 P10
INT2/ INT0/
INT4 INT3 INT1
DTTI1* DTTI0
– – – – –
– – – – –
P34 P33 P32 P31 P30
RTO2 RTO1 RTO0
– – – – –
– – – – –
P54 P53 P52 P51 P50
AN4 AN3 AN2 AN1 AN0
– – – – –
– – – – –
bit7 bit6 bit5 bit4 bit3
P07 P06 P05 P04 P03
PWO0* PWI0* OPT5* OPT4* OPT3* OPT2* OPT1* OPT0*
– – – – –
– – – – –
P27 P26 P25 P24 P23
IN3 IN2 IN1 IN0 PWO1 PWI1
– – – – –
– – – – –
– P46 P45 P44 P43
– PPG2 SNI2* SNI1* SNI0* SCK0 SOT0 SIN0
– – – – –
– – – – –
– – – – P63
– – – – INT7 SCK1 SOT1 SIN1
bit2 bit1 bit0
P02 P01 P00
– – –
– – –
P22 P21 P20
TO1 TIN1
– – –
– – –
P42 P41 P40
– – –
– – –
P62 P61 P60