4524_M Datasheet, PDF (170/310 Pages) Renesas Technology Corp – 4-BIT CISC SINGLE-CHIP MICROCOMPUTER 720 FAMILY / 4500 SERIES

4524 Group
APPLICATION
2.1 I/O pins
(3) Timer control register W6
Table 2.1.3 shows the timer control register W6.
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 2.1.3 Timer control register W6
Timer control register W6
at reset : 00002
at power down : state retained
R/W
W63 Timer LC control bit
W62
W61
W60
Timer LC count source
selection bit
CNTR1 output auto-control circuit
selection bit
D7/CNTR0 pin function selection
bit (Note 2)
0 Stop (state retained)
1 Operating
0 Bit 4 (T54) of timer 5
1 Prescaler output (ORCLK)
0 CNTR1 output auto-control circuit not selected
1 CNTR1 output auto-control circuit selected
0 D7(I/O)/CNTR0 input
1 CNTR0 input/output/D7 (input)
Notes 1: “R” represents read enabled, and “W” represents write enabled.
2: CNTR0 input is valid only when CNTR0 input is selected for the timer 1 count source.
3: When setting the port, W63–W62 are not used.
(4) Serial I/O control register J1
Table 2.1.4 shows the serial I/O control register J1.
Set the contents of this register through register A with the TJ1A instruction.
The contents of register J1 is transferred to register A with the TAJ1 instruction.
Table 2.1.4 Serial I/O control register J1
Serial I/O control register J1
at reset : 00002 at power down : state retained R/W
J13 J12
Synchronous clock
J13
0 0 Instruction clock (INSTCK) divided by 8
Serial I/O synchronous clock _{0 1 Instruction clock (INSTCK) divided by 4}
selection bits
J12
1 0 Instruction clock (INSTCK) divided by 2
1 1 External clock (SCK input)
J11 J10
Port function
J11 _{Serial I/O port function selection 0 0 D6, D5, D4 selected/SCK, SOUT, SIN not selected}
bits
J10
0 1 SCK, SOUT, D4 selected/D6, D5, SIN not selected
1 0 _{SCK, D5, SIN selected/D6, SOUT, D4 not selected}
1 1 _{SCK, SOUT, SIN selected/D6, D5, D4 not selected}
Notes 1: “R” represents read enabled, and “W” represents write enabled.
2: When setting the port, J13–J12 are not used.
Rev.2.00 Aug, 06 2004
2-6
REJ09B0107-0200Z