Panasonic MN103001G/F01K - Manual (Page 368)

I/O Ports
15-2
15.1 Overview
The MN103001G and MN1030F01K have a total of 13 internal I/O ports: 0 to 9, A, B and C. These ports
can all be accessed by programs as internal I/O memory space.
Port 0 is a 3-bit general-purpose output port; ports 1, 2, A, and B are 8-bit general-purpose input/output
ports; port 3 is a 1-bit general-purpose input/output port; ports 4 and 5 are 6-bit general-purpose input/output ports;
port 6 is a 4-bit general-purpose input/output port; ports 7 and C are 4-bit general-purpose output ports; port 8 is a
4-bit general-purpose input port; and port 9 consists of 8 bits: P97 and P94 to P92 are general-purpose output ports,
while P96, P95, P91, and P90 are general-purpose input/output ports.
Each port pin has additional functions, described below. The function of these pins can be switched via the
control register within the I/O ports.
Port 0 (P0)
This port is also used for address bus signals A[22:20] and for the DRAM CAS signal CAS.
Port 1 (P1)
This port is also used for data bus signals D[7:0], the address strobe signal AS, and read/write
select RWSEL.
Port 2 (P2)
This port is also used for data bus signals D[15:8].
Port 3 (P3)
This port is also used for the bus grant signal BG.
Port 4 (P4)
This port is also used for the serial interface input/output signals SBI1, SBO1, SBT1, SBI0,
SBO0, SBT0; the DRAM CAS signals (for 2CAS) DCAS1 and DCAS0; and the DRAM write
signal (for 2CAS) DWE.
Port 5 (P5)
This port is also used for the serial interface input/output signals SBI3, SBO3, SBT3, SBI2,
SBO2, SBT2; and the timer input/output signals TM13IO, TM12IO, TM11IO, TM5IO,
TM4IO, TM3IO, TM2IO, TM1IO, and TM0IO.
Port 6 (P6)
This port is also used for external interrupt inputs IRQ3 to IRQ0; the timer input/output signals
TM6IO, TM7IO, TM10IOA, TM10IOB; and the A/D conversion trigger input ADTRG.