PRE
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tion change
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This entic
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Not e para
Som
ARY
IMIN
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MITSUBISHI MICROCOMPUTERS
M37280MF–XXXSP, M37280MK–XXXSP
M37280EKSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
Table 11.2 Pin Description (continued)
Pin
P5
0
/PWM7,
P5
1
,
P5
2
/R/R1,
P5
3
/G/G1,
P5
4
/B/B1,
P5
5
/OUT1,
P5
6
, P5
7
P6
0–
P6
2,
P6
5–
P6
7
P6
3
/OSC1/
X
CIN
,
P6
4
/OSC2/
X
COUT
Name
Output port P5
PWM output
OSD output
Input/
Output
Output
Output
Output
Functions
Port P5 is a 4-bit output port. The output structure of P5
0
, P5
1
, P5
6
and P5
7
is N-channel
open-drain output, that of P5
2
–P5
5
is CMOS output.
Pin P5
0
is also used as 8-bit PWM output pin PWM7. The output structure is N-channel
open-drain output.
Pins P5
2
–P5
5
are also used as OSD output pins R/R1, G/G1, B/B1, OUT1 respectively. At
R, G, B output, the output structure is analog output. At R1, G1, B1 and OUT1 output, the
output structure is CMOS output.
Ports P6
0
–P6
2
and P6
5
–P6
7
are 6-bit output ports. The output structure is N-channel open-
drain output.
Ports P6
3
and P6
4
are 2-bit input port.
Pin P6
3
is also used as OSD clock input pin OSC1.
Pin P6
4
is also used as OSD clock output pin OSC2. The output structure is CMOS output.
Pin P6
4
is also used as sub-clock output pin X
COUT
. The output structure is CMOS output.
Pin P6
3
is also used as sub-clock input pin X
CIN
.
Ports P7
0
–P7
2
are 3-bit input port.
Pins P7
0
, P7
1
are also used as data slicer input pins CV
IN
, V
HOLD
respectively. When using
data slicer, input composite video signal through a capacitor. Connect a capacitor between
V
HOLD
and V
SS
.
Pins P7
2
is also used as serial I/O data input pin S
IN
.
When using data slicer, connect a filter using of a capacitor and a resistor between HLF and
V
SS
.
This is an analog input pin AD6 .
This is a horizontal synchronous signal input for OSD.
This is a vertical synchronous signal input for OSD.
Output port P6
Input port P6
Clock input for OSD
Clock output for OSD
Sub-clock output
Sub-clock input
Input port P7
Input for data
slicer
Serial I/O data input
Output
Input
Input
Output
Output
Input
Input
Input
P7
0
/CV
IN,
P7
1
/V
HOLD
,
P7
2
/(S
IN
)
Input
HLF/AD6
Analog input
H
SYNC
V
SYNC
H
SYNC
input
V
SYNC
input
Input
Input
Input
Note :
As shown in the memory map (Figure 12.2.1), port P0 is accessed as a memory at address 00C016 of zero page. Port P0 has the port P0 direction register
(address 00C116 of zero page) which can be used to program each bit as an input (“0”) or an output (“1”). The pins programmed as “1” in the direction register
are output pins. When pins are programmed as “0,” they are input pins. When pins are programmed as output pins, the output data are written into the port
latch and then output. When data is read from the output pins, the output pin level is not read but the data of the port latch is read. This allows a previously-
output value to be read correctly even if the output “L” voltage has risen, for example, because a light emitting diode was directly driven. The input pins float,
so the values of the pins can be read. When data is written into the input pin, it is written only into the port latch, while the pin remains in the floating state.
Rev. 1.0
8
RENESAS [ RENESAS TECHNOLOGY CORP ]
