HD6432633 Datasheet, PDF (484/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

Pin
Selection Method and Pin Functions
PF3/LWR/ADTRG/ The pin function is switched as shown below according to the operating mode,
IRQ3
the bus mode, A/D converter bits TRGS1 and TRGS0, and bit PF3DDR.
Operating
mode
Modes 4 to 6
Mode 7
Bus mode
16-bit bus
8-bit bus mode
—
mode
PF3DDR
—
0
1
0
1
Pin function LWR output PF3 input PF3 output PF3 input PF3 output
pin
pin
pin
pin
pin
ADTRG input pin*¹
PF2/LCAS/WAIT/
BREQO
IRQ3 input pin*²
Notes: *1 ADTRG input when TRGS0 = TRGS1 = 1.
*2 When used as an external interrupt input pin, do not use as an I/O
pin for another function.
The pin function is switched as shown below according to the combination of
the operating mode and bits RMTS2 to RMTS0, LCASS, BREQOE, WAITE,
ABW5 to ABW2, and PF2DDR.
Operating
Mode
Modes 4 to 6
Mode 7
LCASS
0*
1
—
BREQOE
—
0
1
—
WAITE
—
0
1
—
—
PF1/BACK/
BUZZ
PF2DDR
—
0
1
—
—
0
1
Pin function
LCAS
output
pin
PF2
input
pin
PF2
output
pin
WAIT BREQO PF2
input output input
pin
pin
pin
PF2
output
pin
Note: * Restricted to RMTS2 to RMTS0=B'001 to B'011, DRAM space 16-bit
access in modes 4 to 6 only.
The pin function is switched as shown below according to the combination of
the operating mode and bits BRLE, BUZZE, and PF1DDR.
Operating
Mode
Modes 4 to 6
Mode 7
BRLE
0
1
—
BUZZE
0
1
—
0
1
PF1DDR
Pin function
0
PF1
input
pin
1
PF1
output
pin
—
BUZZ
output
pin
—
BACK
output
pin
0
PF1
input
pin
1
—
PF1 BUZZ
output output
pin pin
430