參數(shù)資料
型號(hào)： M38B41EAH-XXXXFP
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機(jī)
文件頁(yè)數(shù)： 3/78頁(yè)
文件大?。?/td> 1214K
代理商： M38B41EAH-XXXXFP
3
38B4 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PIN DESCRIPTION
Table 1 Pin description (1)
Pin
Name
Function
V
CC
, V
SS
V
EE
Power source
Pull-down
power source
Reference
voltage
Analog power
source
Reset input
Clock input
Apply voltage of 4.0–5.5 V to V
CC
,
and 0 V to V
SS
.
Apply voltage supplied to pull-down resistors of ports P0, P1, and P3.
V
REF
Reference voltage input pin for A-D converter.
AV
SS
Analog power source input pin for A-D converter.
Connect to V
SS
.
Reset input pin for active “L”.
Input and output pins for the main clock generating circuit.
Feedback resistor is built in between X
IN
pin and X
OUT
pin.
Connect a ceramic resonator or quartz-crystal oscillator between the X
IN
and X
OUT
pins to set the
oscillation frequency.
When an external clock is used, connect the clock source to the X
IN
pin and leave the X
OUT
pin open.
The clock is used as the oscillating source of system clock.
8-bit I/O port.
I/O direction register allows each pin to be individually programmed as either
input or output.
At reset, this port is set to input mode.
A pull-down resistor is built in between port P0 and the V
EE
pin.
CMOS compatible input level.
High-breakdown-voltage P-channel open-drain output structure.
At reset, this port is set to V
EE
level.
8-bit output port.
A pull-down resistor is built in between port P1 and the V
EE
pin.
High-breakdown-voltage P-channel open-drain output structure.
At reset, this port is set to V
EE
level.
8-bit I/O port with the same function as port P0.
Low-voltage input level.
High-breakdown-voltage P-channel open-drain output structure.
8-bit output port.
A pull-down resistor is built in between port P3 and the V
EE
pin.
High-breakdown-voltage P-channel open-drain output structure.
At reset, this port is set to V
EE
level.
7-bit I/O port with the same function as port P0.
CMOS compatible input level
N-channel open-drain output structure.
RESET
X
IN
P0
0
/FLD
8
–
P0
7
/FLD
15
I/O port P0
FLD automatic display
pins
P1
0
/FLD
16
– Output port P1
P1
7
/FLD
23
FLD automatic display
pins
P2
0
/B
UZ02
/
FLD
0
–
P2
7
/FLD
7
P3
0
/FLD
24
– Output port P3
P3
7
/FLD
31
I/O port P2
FLD automatic display
pins
Buzzer output pin (P2
0
)
FLD automatic display
pins
P4
0
/INT
0
,
P4
1
/INT
1
,
P4
2
/INT
3
P4
3
/B
UZ01
P4
4
/PWM
1
I/O port P4
Interrupt input pins
In the mask option type P,
INT
3
cannot be used.
Buzzer output pin
PWM output pin
(Timer output pin)
Timer output pin
P4
5
/T
1OUT
,
P4
6
/T
3OUT
P4
7
/INT
2
Input port P4
1-bit input port.
CMOS compatible input level.
Interrupt input pin
Function except a port function
X
OUT
Clock output
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