
S1C8F360 TECHNICAL MANUAL
EPSON
59
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (Output Ports)
s Special output control
LCCLK: 00FF10HD4
Controls the CL (LCD synchronous) signal output.
When "1" is written: CL signal output
When "0" is written: HIGH level (DC) output
Reading:
Valid
LCCLK is the output control register for CL signal.
When "1" is set, the CL signal is output from the
output port terminal R25 and when "0" is set, HIGH
(VDD) level is output. At this time, "1" must always
be set for the data register R25D.
At initial reset, LCCLK is set to "0" (HIGH level
output).
LCFRM: 00FF10HD3
Controls the FR (LCD frame) signal output.
When "1" is written: FR signal output
When "0" is written: HIGH level (DC) output
Reading:
Valid
LCFRM is the output control register for FR signal.
When "1" is set, the FR signal is output from the
output port terminal R26 and when "0" is set, HIGH
(VDD) level is output. At this time, "1" must always
be set for the data register R26D.
The FR output is not available when the R26 port is
not set as the TOUT output port by mask option.
At initial reset, LCFRM is set to "0" (HIGH level
output).
PTOUT: 00FF30HD2
Controls the TOUT (programmable timer output
clock) signal output.
When "1" is written: TOUT signal output ON
When "0" is written: TOUT signal output OFF
Reading:
Valid
PTOUT is the output control register for TOUT
signal. When "1" is set to the register, the TOUT
(TOUT) signal is output from the output port
terminal R27 (R26). When "0" is set, the R27 goes
HIGH (VDD) and the R26 goes LOW (VSS).
To output the TOUT signal, "1" must always be set
for the data register R27D. The data register R26D
does not affect the TOUT output.
At initial reset, PTOUT is set to "0" (output OFF).
The TOUT signal can be output from R26 only
when the function is selected by mask option.
FOUTON: 00FF40HD3
Controls the FOUT (fOSC1/fOSC3 dividing clock)
signal output.
When "1" is written: FOUT signal output
When "0" is written: HIGH level (DC) output
Reading:
Valid
FOUTON is the output control register for FOUT
signal. When "1" is set, the FOUT signal is output
from the output port terminal R34 and when "0" is
set, HIGH (VDD) level is output. At this time, "1"
must always be set for the data register R34D.
At initial reset, FOUTON is set to "0" (HIGH level
output).
FOUT0, FOUT1, FOUT2: 00FF40HD4, D5, D6
FOUT signal frequency is set as shown in Table
5.6.6.2.
Table 5.6.6.2 FOUT frequency settings
At initial reset, this register is set to "0" (fOSC1/1).
BZON: 00FF44HD0
Controls the buzzer (BZ and BZ) signal output.
When "1" is written: Buzzer signal output ON
When "0" is written: Buzzer signal output OFF
Reading:
Valid
BZON is the output control register for buzzer
signal. When "1" is set to the register, the BZ (BZ)
signal is output from the output port terminal R50
(R51). When "0" is set, the R50 goes LOW (VSS) and
the R51 goes HIGH (VDD).
To output the BZ signal, "0" must always be set for
the data register R50D. The data register R51D does
not affect the BZ output.
At initial reset, BZON is set to "0" (output OFF).
The BZ signal can be output from R51 only when
the function is selected by mask option.
FOUT2
FOUT frequency
0
1
fOSC1 / 1
fOSC1 / 2
fOSC1 / 4
fOSC1 / 8
fOSC3 / 1
fOSC3 / 2
fOSC3 / 4
fOSC3 / 8
FOUT1
0
1
0
1
FOUT0
0
1
0
1
0
1
0
1
fOSC1:
fOSC3:
OSC1 oscillation frequency
OSC3 oscillation frequency