Renesas 4514 - Manual (Page 109)

2-6
APPLICATION
2.1 I/O pins
4513/4514 Group User’s Manual
(4) Direction register FR0 (The 4513 Group does not have this register.)
Register FR0 is used to switch to input/output of P5
0 –P5 3 .
Set the contents of this register through register A with the TFR0A instruction.
Table 2.1.4 shows the direction register FR0.
Table 2.1.4 Direction register FR0
Direction register FR0 (Note 2) at reset : 0000 2 at RAM back-up : state retained W
Port P5 3 input
Port P5 3 output
Port P5 2 input
Port P5 2 output
Port P5 1 input
Port P5 1 output
Port P5 0 input
Port P5 0 output
Port P5 3 input/output control bit
Port P5 2 input/output control bit
Port P5 1 input/output control bit
Port P5 0 input/output control bit
0
1
0
1
0
1
0
1
Notes 1: “W” represents write enabled.
2: The 4513 Group does not have register FR0.
FR0 3
FR0 2
FR0 1
FR0 0
(5) Timer control register W6
D
6 /CNTR0 function selection bit is assigned to bit 0, D 7 /CNTR1 function selection bit is assigned to
bit 2.
Set the contents of this register through register A with the TW6A instruction.
The contents of register W6 is transferred to register A with the TAW6 instruction.
Table 2.1.5 shows the timer control register W6.
Table 2.1.5 Timer control register W6
Timer control register W6 at reset : 0000 2 at RAM back-up : state retained R/W
Timer 3 underflow signal output divided by 2
CNTR1 output control by timer 4 underflow signal divided by 2
D 7 (I/O)/CNTR1 input
CNTR1 I/O/D 7 (input)
Timer 1 underflow signal output divided by 2
CNTR0 output control by timer 2 underflow signal divided by 2
D 6 (I/O)/CNTR0 input
CNTR0 I/O/D 6 (input)
CNTR1 output control bit
D 7 /CNTR1 function selection bit
CNTR0 output control bit
D 6 /CNTR0 function selection bit
0
1
0
1
0
1
0
1
Notes 1: “R” represents read enabled, and “W” represents write enabled.
2: When setting ports, W6 3 and W6 1 are not used.
W6 3
W6 2
W6 1
W6 0