M38197 Mitsubishi, M38197 Datasheet - Page 3

• Manufacturer Part Number: M38197
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
• Manufacturer: Mitsubishi

PIN DESCRIPTION
V
V
V
AV
RESET
X
X
P0
DIG
SEG
P1
DIG
DIG
P2
P2
P2
P3
P3
P4
P4
ZCR
P4
P4
P4
P4
P4
CC
EE
REF
IN
OUT
6
SS
0
0
0
3
4
0
7
0
5
2
4
1
7
/T1
/SEG
/SEG
/DIG
/DIG
–P2
/SEG
/SEG
/INT
/INT
/INT
/INT
/T3
0
15
, V
8
Pin
39
–P0
–P1
SS
/DIG
OUT
OUT
7
0
1
2
4
16
19
7
7
,
/
–
32
40
24
31
/
/
–
,
/
/
–
7
Power source
Pull-down
Power source
Analog reference
voltage
Reset input
Analog power source
Clock input
Clock output
Output port P0
Output port P1
I/O port P2
Output port P3
I/O port P4
Output port P2
Input port P4
Name
•Reference voltage input pin for A-D converter and D-A converter
•Reset input pin for active “L”
•Apply voltage of 4.0 to 5.5 V to V
•Input and output pins for the main clock generating circuit
•Feedback resistor is built in between X
•Connect a ceramic resonator or a quartz-crystal oscillator between the X
•If an external clock is used, connect the clock source to the X
•This clock is used as the oscillating source of system clock.
•8-bit output port
•This port builds in pull-down resistor between
•At reset this port is set to V
•The high-breakdown-voltage P-channel
•8-bit output port with the same function as
•4-bit output port with the same function as
•4-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.
•TTL input level
•CMOS 3-state output
•8-bit output port with the same function as
•2-bit input port
•CMOS compatible input level
•Applies voltage supplied to pull-down resistors of ports P0, P1, P2
•GND input pin for A-D converter and D-A converter
•Connect AV
•6-bit CMOS I/O port with the same function
•CMOS compatible input level
•CMOS 3-state output
set oscillation frequency.
open.
port P0
port P0
port P0 and the V
open-drain
port P0
as ports P2
4
SS
–P2
to V
7
EE
Function
SS
pin.
.
EE
level.
CC
, and 0 V to V
IN
pin and X
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
FLD automatic display pins
FLD automatic display pins
FLD automatic display pins
FLD automatic display pins
External interrupt input pins
A zero cross detection circuit input pin (P4
Timer output pins
SS
OUT
.
MITSUBISHI MICROCOMPUTERS
pin.
Function except a port function
IN
0
pin and leave the X
–P2
3
3819 Group
, P3, and P9.
IN
pin and X
OUT
OUT
pin to
5
pin
)
3