HD6413002 Datasheet, PDF (263/700 Pages) Renesas Technology Corp – High-performance single-chip microcontroller

9.3.3 Pin Functions
The port 6 pins are also used for BACK output and BREQ and WAIT input. Table 9-5 describes
the selection of pin functions.
Table 9-5 Port 6 Pin Functions
Pin
P6₂/BACK
P6₁/BREQ
P6₀/WAIT
Pin Functions and Selection Method
Bit BRLE in BRCR and bit P6₂DDR select the pin function as follows
BRLE
P6₂DDR
Pin function
0
0
1
P6₂ input P6₂ output
1
—
BACK output
Bit BRLE in BRCR and bit P6₁DDR select the pin function as follows
BRLE
P6₁DDR
Pin function
0
0
1
P6₁ input P6₁ output
1
—
BREQ input
Bits WCE7 to WCE0 in WCER, bit WMS1 in WCR, and bit P6₀DDR select the
pin function as follows
WCER
WMS1
P6₀DDR
Pin function
All 1s
Not all 1s
0
1
—
0
1
0*
0*
P6₀ input P6₀ output
WAIT input
Note: * Do not set bit P6₀DDR to 1.
9.4 Port 7
9.4.1 Overview
Port 7 is an 8-bit input port that is also used for analog input to the A/D converter. Port 7 has the
same set of pin functions in all operating modes. Figure 9-5 shows the pin configuration of port 7.
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