M30622 Mitsubishi, M30622 Datasheet - Page 9

• Manufacturer Part Number: M30622
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: Mitsubishi

Pin Description
Pin Description
V
CNV
____________
RESET
X
X
BYTE
AV
AV
V
P0
D
P1
D
P2
A
A
A
P3
A
A
CC
IN
OUT
REF
0
0
0
8
8
0
8
Pin name
/D
, A
/D
0
0
0
0
A
to A
A
CC
SS
to A
to A
to D
to D
, V
to P0
to P1
to P2
7
to P3
9
SS
0
7
1
/D
,
to A
Tentative Specifications REV.A
to
/D
SS
7
7
15
7
15
7
/D
0
S
7
7
7
7
15
6
pecifications in this manual are tentative and subject to change.
Power supply
input
CNV
Reset input
Clock input
Clock output
External data
bus width
select input
Analog power
supply input
Analog power
supply input
Reference
voltage input
I/O port P0
I/O port P1
I/O port P2
I/O port P3
Signal name
SS
Input
Input
Input
Output
Input
Input
Input/output
Input/output
Input/output
Input/output
Input/output
Output
Input/output
Output
Input/output
Input/output
Output
Input/output
I/O type
Supply 4.2 V to 5.5 V to the V
This pin switches between processor modes. Connect it to the V
pin when operating in single-chip or memory expansion mode.
Connect it to the V
A “L” on this input resets the microcomputer.
These pins are provided for the main clock generating circuit.
Connect a ceramic resonator or crystal between the X
X
and leave the X
This pin selects the width of an external data bus. A 16-bit width is
selected when this input is “L”; an 8-bit width is selected when this
input is “H”. This input must be fixed to either “H” or “L”. When
operating in single-chip mode, connect this pin to V
(80-pin package), the BYTE signal is internally connected to the
CNV
This pin is a power supply input for the A-D converter. Connect this
pin to V
This pin is a power supply input for the A-D converter. Connect this
pin to V
This pin is a reference voltage input for the A-D converter.
This is an 8-bit CMOS I/O port. It has an input/output port direction
register that allows the user to set each pin for input or output
individually. When set for input, the user can specify in units of four
bits via software whether or not they are tied to a pull-up resistor.
Pins in this port also function as A-D converter extended input pins
as selected by software when operating in single-chip mode.
When set as a separate bus, these pins input and output data (D
This is an 8-bit I/O port equivalent to P0. Pins in this port also
function as external interrupt pins as selected by software.
When set as a separate bus, these pins input and output data (D
This is an 8-bit I/O port equivalent to P0. Pins in this port also
function as A-D converter extended input pins as selected by
software when operating in single-chip mode.
These pins output 8 low-order address bits (A
If the external bus is set as an 8-bit wide multiplexed bus, these pins
input and output data (D
(A
If the external bus is set as a 16-bit wide multiplexed bus, these pins
input and output data (D
separated in time by multiplexing. They also output address (A
This is an 8-bit I/O port equivalent to P0.
These pins output 8 middle-order address bits (A
If the external bus is set as a 16-bit wide multiplexed bus, these pins
input and output data (D
by multiplexing. They also output address (A
OUT
0
–A
SS
pins. To use an externally derived clock, input it to the X
7
) separated in time by multiplexing.
CC
SS
signal.
9
.
.
OUT
CC
pin open.
pin when operating in microprocessor mode.
7
0
) and output address (A
–D
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
0
7
Function
–D
) and output 8 low-order address bits
CC
6
pin. Supply 0 V to the V
) and output address (A
Mitsubishi microcomputers
9
–A
0
–A
M16C / 62T Group
8
15
) separated in time
8
7
–A
).
).
SS
15
).
. In M30623
IN
SS
and the
0
8
pin.
–D
–D
1
IN
–A
0
7
15
).
).
pin
SS
).
7
)