Toshiba TLCS-900/L1 Series Manual page 79

3.5.10 Port Z (PZ2 to PZ3)
Port Z is the 2-bit general-purpose I/O port. I/O is set using control register PZCR and
PZFC. Resetting resets all bits of the output latch PZ to 1.
In addition to functioning as a general-purpose I/O port, port Z also functions as output
for the CPU's control/status signal.
Resetting initializes PZ2 and PZ3 pins to input mode with pull-up resistor.
When the PZ<RDE> register clearing to 0,outputs the
static RAM) of the
If the <RDE> remains 1, the
are is accessed.
pin even when the internal addressed.
RD
strobe signal is output only when the external address
RD
91C824-77
TMP91C824
strobe (used for the peused
RD
2008-02-20