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(ix) WRH (Write Strobe High Level Data) ··· output
In this mode, this is write strobe signal output pin for the high-order data in an external 16-bit data bus.
Output occurs during the write cycle, similar to DSTB.
(x) RD (Read) ··· output
In this mode, this is read strobe signal output pin for an external 16-bit data bus. Output occurs during
the read cycle, similar to DSTB.
(10) P100 to P107 (Port 10) ··· 3-state I/O
Port 10 is an 8-bit I/O port in which input and output pins can be specified bitwise.
P100 to P107 can function as I/O port pins and can also operate as a real-time output port.
P100 to P107 can select normal output and N-ch open drain output.
(a) Port mode
P100 to P107 can be set bitwise as input or output pins according to the contents of port 10 mode register
(PM10).
(b) Control mode
P100 to P107 can be set bitwise to port mode or control mode according to the contents of the port 10
register (P10) and port 10 mode register (PM10).
(i)
RTP0 to RTP7 (Real-time Port 0 to 7) ··· output
In this mode, these pins comprise a real-time output port.
(ii) A5 to A12 (Address 5 to 12) ··· output
These are address bus that is used for external access. These pins operate as A5 to A12 bit address
output pins within a 22-bit address. The output changes in synchronization with the rising edge of the
clock in the T1 state of the bus cycle. When the timing sets the bus cycle as inactive, the previous bus
cycle's address is retained.
(11) P110 to P114 (Port 11) ··· 3-state I/O
Port 11 is a 5-bit I/O port in which input and output pins can be specified bitwise. However, P114 is fixed as the
XT1 input pin.
(a) Port mode
P110 to P114 can be set bitwise as inputs or outputs according to the contents of port 11 mode register
(PM11). However, P114 is fixed as an input.
(b) Control mode
P110 to P114 can be set bitwise to port mode or control mode according to the contents of the port 11
register (P11) and port 11 mode register (PM11).
P114 is fixed as the XT1 pin.
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CHAPTER 2
PIN FUNCTIONS
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