參數(shù)資料
型號： M37225ECSP
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
中文描述： 單芯片8位CMOS微機(jī)電壓合成與屏幕顯示控制器
文件頁數(shù)： 7/133頁
文件大?。?/td> 1610K
代理商： M37225ECSP
7
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
M37225M6–XXXSP, M37225M8–XXXSP
M37225ECSP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
Pin
Name
Input/
Output
Functions
V
CC
,
V
SS
CNV
SS
RESET
Power source
Apply voltage of 5 V
±
10 % to (typical) V
CC
, and 0 V to V
SS
.
CNV
SS
Reset input
This is connected to V
SS
.
To enter the reset state, the reset input pin must be kept at a LOW for 2
μ
s or more (under
normal V
CC
conditions).
If more time is needed for the quartz-crystal oscillator to stabilize, this LOW condition should
be maintained for the required time.
This chip has an internal clock generating circuit. To control generating frequency, an
external ceramic resonator or a quartz-crystal oscillator is connected between pins X
IN
and
X
OUT
. If an external clock is used, the clock source should be connected to the X
IN
pin and
the X
OUT
pin should be left open.
Port P0 is an 8-bit I/O port with direction register allowing each I/O bit to be individually
programmed as input or output. At reset, this port is set to input mode. The output structure
is N-channel open-drain output. (See note 1)
Pins P0
0
–P0
5
are also used as PWM output pins PWM0–PWM5 respectively. The output
structure is N-channel open-drain output.
Pins P0
6
and P0
7
are also used as INT external interrupt input pins INT2 and INT1
respectively.
P0
6
pin is also used as analog input pin A-D4.
Port P1 is an 8-bit I/O port and has basically the same functions as port P0. The
output structure is CMOS output. (See note 1)
Pins P1
0
is also used as OSD output pin OUT2. The output structure is CMOS output.
Pins P1
1
–P1
4
are used as SCL1, SCL2, SDA1 and SDA2 respectively, when multi-master
I
2
C-BUS interface is used. The output structure is N-channel open-drain output.
Pins P1
0
, P1
5
–P1
7
are also used as analog input pin A-D8, A-D1–A-D3 respectively.
P1
5
pin is also used as INT external interrupt input pin INT3.
Input
X
IN
Clock input
Input
X
OUT
Clock output
Output
P0
0
/PWM0–
P0
5
/PWM5
,
P0
6
/INT2/A-D4,
P0
7
/INT1
I/O port P0
I/O
PWM output
Output
External interrupt
input
Analog input
Input
Input
I/O
P1
0
/OUT2/A-D8,
I/O port P1
P1
1
/SCL1,
P1
2
/SCL2,
P1
3
/SDA1,
P1
4
/SDA2,
P1
5
/INT3/A-D1,
Analog input
P1
6
/A-D2,
P1
7
/DA2/A-D3
OSD output
Multi-master
I
2
C-BUS interface
Output
I/O
Input
Input
External interrupt
input
DA output
I/O port P2
Output
I/O
Pins P1
7
is also used as 14-bit PWM output pin DA2. The output structure is CMOS output.
Port P2 is an 8-bit I/O port and has basically the same functions as port P0.
The P2
1
/S
OUT
(/S
IN
),
output structure is CMOS output. (See note 1)
P2
0
pin is also used as serial I/O synchronous clock input/output pin S
CLK
. The output
structure is N-channel open-drain output.
P2
1
pin is also used as serial I/O data input/output pin S
OUT
(/S
IN
). The output
structure is N-channel open-drain output.
P2
2
pin is also used as serial I/O data input pin S
IN
.
Pins P2
3
and P2
4
are also used as timer external clock input pins TIM3 and TIM2
respectively.
Ports P3
0
–P3
2
and P3
5
are a 3-bit I/O port and has basically the same functions as port 0
(see note 1). Either CMOS output or N-channel open-drain output structure can be selected
as ports P3
0
, P3
1
and P3
5
. The output structure of port P3
2
is N-channel
open-drain output structure.(See notes 1, 2)
Pins P3
0
–P3
2
are also used as analog input pins A-D5–A-D7 respectively.
P3
5
pin is also used as 14-bit PWM output pin DA1. The output structure is CMOS output. At
reset, output is undefined.
Pins P3
3
and P3
4
are a 2-bit input port.
P3
3
pin is also used as OSD clock input pin OSC1.
P3
4
pin is also used as OSD clock output pin OSC2. The output structure is CMOS output.
P2
0
/S
CLK
,
P2
2
/S
IN
,
P2
3
/TIM3,
P2
4
/TIM2,
P2
5
–P2
7
Serial I/O synchronous
clock input/output port
Serial I/O data
input/output
Serial I/O data input
External clock
input for timer
I/O port P3
I/O
I/O
Input
Input
P3
0
/A-D5,
P3
1
/A-D6,
P3
2
/A-D7,
DA1/P3
5
I/O
Analog input
DA output
Input
Output
OSC1/P3
3
, Input port P3
OSC2/P3
4
,
Input
Input
Output
Clock input for OSD
Clock output for OSD
7. PIN DESCRIPTION
Table 7.1 Pin Description
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