M37212 Mitsubishi, M37212 Datasheet - Page 9

• Manufacturer Part Number: M37212
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
• Manufacturer: Mitsubishi

Table 7.2 Pin Description (continued)
Note : Port Pi (i = 0 to 3) has the port Pi direction register which can be used to program each bit as an input (“0”) or an output (“1”). The pins programmed as “1” in
Rev. 1.0
P4
A-D7,
P4
A-D6,
P4
A-D5,
P5
P5
P5
P5
P6
P6
H
V
DA
SYNC
SYNC
0
0
3
1
2
2
3
4
5
/S
Pin
PWM0– Output port P6
/PWM3
/S
/S
/R,
/G,
/B,
/OUT1
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 are in the floating state, 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.
OUT(/IN)
CLK
IN
/
/
/ I/O port P4
Serial I/O data
input/output
Serial I/O synchronizing
clock input/output
Analog input pin
Input port P4
Serial I/O data
input
Analog input
Output port P5
OSD output
PWM output
H
V
DA output
SYNC
SYNC
Name
input
input
Output
Input/
Output
Output
Output
Output
Output
Input
Input
Input
Input
Input
Input
I/O
I/O
I/O
M37212M4/M8–XXXSP, M37212M6–XXXSP/FP
Ports P4
output structure is N-channel open-drain output.
Pin P4
channel open-drain output.
Pin P4
structure is N-channel open-drain output.
Pin P4
Port P4
Pin P4
Pin P4
Ports P5
output structure is CMOS output.
Pins P5
structure is CMOS output.
output structure is N-channel open-drain output.
Pins P6
structure is N-channel open-drain output.
This is a horizontal synchronizing signal input for OSD.
This is a vertical synchronizing signal input for OSD.
This is a 14-bit PWM output pin.
Ports P6
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
0
0
2
2
1
2
, P4
0
2
is also used as serial I/O data input/output pin S
is also used as serial I/O data input pin S
is also used as analog input pin A-D5.
is also used as serial I/O synchronizing clock input/output pin S
2
0
0
–P6
–P5
is a 1-bit input port and has basically the same functions as port P0.
–P5
, P4
–P6
1
5
3
are also used as analog input pins A-D7, A-D6 respectively.
5
1
3
are also used as OSD output pins R, G, B, OUT1 respectively. The output
are also used as PWM output pins PWM0–PWM3 respectively. The output
are a 4-bit output port and has basically the same functions as port P0. The
are a 4-bit I/O port and has basically the same functions as port P0. The
are a 2-bit I/O port and has basically the same functions as port P0. The
with ON-SCREEN DISPLAY CONTROLLER
Functions
MITSUBISHI MICROCOMPUTERS
IN
.
OUT(/IN)
M37212EFSP/FP
. The output structure is N-
CLK
. The output
9