MITSUBISHI MICROCOMPUTERS
7630 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
DESCRIPTION
The 7630 group is a single chip 8-bit microcomputer designed with
CMOS silicon gate technology.
Being equipped with a CAN (Controller Area Network) module cir-
cuit, the microcomputer is suited to drive automotive equipments.
The CAN module complies with CAN specification version 2.0, part
B and allows priority-based message management.
In addition to the microcomputers simple instruction set, the ROM,
RAM and I/O addresses are placed in the same memory map to
enable easy programming.
The built-in ROM is available as mask ROM or One Time PROM.
For development purposes, emulator- and EPROM-type microcom-
puters are available as well.
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FEATURES
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Basic machine-language instructions . . . . . . . . . . . . . . . . . . 71
Minimum instruction execution time
(at 10 MHz oscillation frequency) . . . . . . . . . . . . . . . . . . 0.2
µs
Memory size
ROM . . . . . . . . . . . . . . . . . 16252 bytes (M37630M4T-XXXFP)
RAM . . . . . . . . . . . . . . . . . . . 512 bytes (M37630M4T-XXXFP)
I/O ports
Programmable I/O ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . 24 sources, 24 vectors
Timers
16-bit Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 channels
8-bit Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 channels
Serial I/Os
Clock synchronous. . . . . . . . . . . . . . . . . . . . . . . . . . . 1 channel
UART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 channel
CAN module
(CAN specification version 2.0, part B) . . . . . . . . . . . 1 channel
A-D converter . . . . . . . . . . . . . . . . . . . . . . . . 8-bits x 8 channels
Watchdog timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Clock Generating Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Built-in with internal feedback resistor
Power source voltage
(at 10 MHz oscillation frequency). . . . . . . . . . . . . . . 4.0 to 5.5 V
Power dissipation
In high-speed mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 mW
(at 8 MHz oscillation frequency, at 5 V power source voltage)
Operating temperature range. . . . . . . . . . . . . . . . . –40 to 85
°C
Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44QFP (44P6N-A)
APPLICATION
Automotive controls
PIN CONFIGURATION (TOP VIEW)
P1
5
/CNTR
1
P1
6
/PWM
P1
4
/CNTR
0
P1
2
/INT
1
P1
1
/INT
0
P0
7
/AN
7
P0
6
/AN
6
P0
5
/AN
5
25
P0
4
/AN
4
24
33
32
31
30
29
28
27
26
23
P0
3
/AN
3
P1
3
/TX
0
P1
7
P2
0
/S
IN
P2
1
/S
OUT
P2
2
/S
CLK
P2
3
/S
RDY
V
SS
P2
4
/UR
X
D
P2
5
/UT
X
D
P2
6
/U
RTS
P2
7
/U
CTS
P3
0
34
35
36
37
38
39
40
41
42
43
44
22
21
20
19
M37630M4T-XXXFP
M37630E4T-XXXFP
18
17
16
15
14
13
12
P0
2
/AN
2
P0
1
/AN
1
P0
0
/AN
0
V
REF
AV
SS
V
CC
X
OUT
X
IN
V
SS
RESET
P4
7
/KW
7
10
P3
4
P4
0
/KW
0
P4
1
/KW
1
P4
2
/KW
2
P4
3
/KW
3
P4
4
/KW
4
P4
5
/KW
5
Package type: 44P6N-A
44-pin plastic molded QFP
Fig. 1
Pin configuration of M37630M4T–XXXFP
P3
2
/CRX
MITSUBISHI
ELECTRIC
P4
6
/KW
6
P3
1
/CTX
P3
3
11
1
2
3
4
5
6
7
8
9
1
Fig. 2
2
Reset
input
RESET
V
CC
17
14
39
18
M37630MXT-XXXFP FUNCTIONAL BLOCK DIAGRAM (PACKAGE: 44P6N-A)
Clock
output
X
OUT
V
SS
AV
SS
13
Clock
input
X
IN
16
15
Functional block diagram
CPU
A (8)
ROM
RAM
WDT
X (8)
2
Clock generating circuit
Timer X (16)
Timer Y (16)
Timer 3 (8)
Timer 2 (8)
PWM
Timer 1 (8)
Y (8)
S (8)
PC
H
(8)
PS (8)
PC
L
(8)
MITSUBISHI
ELECTRIC
CAN
2
4
4
key on
wake up
UART
Serial I/O
A-D Converter
INT
0
, INT
1
2
8
P4 (8)
P3 (5)
P2 (8)
3
P1 (7)
P0 (8)
12 11 10 9 8 7 6 5
4 3 2 1 44
43 42 41 40 38 37 36 35
34 33 32 31 30 29 28
19
27 26 25 24 23 22 21 20
V
REF
input
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
7630 Group
I/O port P4
I/O port P3
I/O port P2
I/O port P1
I/O port P0
MITSUBISHI MICROCOMPUTERS
7630 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
PIN DESCRIPTION
Table 1: Pin description
Pin
V
CC
, V
SS
AV
SS
Name
Power source
voltage
Analog power
source voltage
Input/Output
Description
Power supply pins; apply 4.0 to 5.5 V to V
CC
and 0 V to V
SS
Ground pin for A-D converter. Connect to V
SS
Reset pin. This pin must be kept at “L” level for more than 2
µs,
to enter the reset
state. If the crystal or ceramic resonator requires more time to stabilize, extend the
“L” level period.
Input and output pins of the internal clock generating circuit. Connect a ceramic or
quartz–crystal resonator between the X
IN
and X
OUT
pins. When an external clock
source is used, connect it to X
IN
and leave X
OUT
open.
Reference voltage input pin for A-D converter
RESET
Reset input
Input
X
IN
X
OUT
V
REF
P0
0
/AN
0
—
P0
7
/AN
7
Clock input
Clock output
Reference volt-
age input
I/O port P0
Input
Output
Input
I/O
CMOS I/O ports or analog input ports
CMOS input port or external interrupt input port. The active edge (rising or falling) of
external interrupts can be selected. This pin will be used as V
PP
pin during PROM
programming of One Time PROM Versions.
CMOS I/O port or external interrupt input port. The active edge (rising or falling) of
external interrupts can be selected.
CMOS I/O port or input pin used in the bi-phase counter mode
P1
1
/INT
0
Input
P1
2
/INT
1
P1
3
/TX
0
P1
4
/CNTR
0
P1
5
/CNTR
1
P1
6
/PWM
P1
7
P2
0
/S
IN
P2
1
/S
OUT
P2
2
/S
CLK
P2
3
/S
RDY
I/O port P2
P2
4
/UR
X
D
P2
5
/UT
X
D
P2
6
/U
RTS
P2
7
/U
CTS
P3
0
P3
1
/CTX
I/O port P3
P3
2
/CRX
P3
3
—P3
4
P4
0
/KW
0
—
P4
7
/KW
7
I/O port P4
I/O
I/O
I/O
I/O port P1
I/O
CMOS I/O port or timer X input pin used for the event counter, pulse width measure-
ment and bi-phase counter mode
CMOS I/O port or timer Y input pin used for the event counter, pulse width and pulse
period measurement mode
CMOS I/O port or PWM output pin used in the PWM mode of timers 2 and 3
CMOS I/O port
CMOS I/O ports or clock synchronous serial I/O pins
CMOS I/O ports or asynchronous serial I/O pins
CMOS I/O port
CMOS I/O port or CAN transmit data pin
CMOS I/O port or CAN receive data pin
CMOS I/O port
CMOS I/O ports. These ports can be used for key-on wake-up when configured as
inputs.
MITSUBISHI
ELECTRIC
3
MITSUBISHI MICROCOMPUTERS
7630 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
PART NUMBERING
Product
M37630
M
4
T–
XXX
FP
Package type
FP: 44P6N-A package
FS: 80D0 package
ROM number
Omitted in One Time PROM version (blank) and EPROM version
T: Automotive use
ROM/PROM size
4: 16384 bytes
The first 128 bytes and the last 4 bytes of ROM are reserved areas.
They cannot be used.
Memory type
M: Mask ROM version
E: EPROM or One Time PROM version
Fig. 3
Part numbering
4
MITSUBISHI
ELECTRIC
MITSUBISHI MICROCOMPUTERS
7630 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
GROUP EXPANSION
Mitsubishi plans to expand the 7630 group as follows:
Memory Size
ROM/PROM size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Kbytes
RAM size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 512 bytes
Memory Type
Support mask ROM, One Time PROM and EPROM versions.
Package
44P6N-A . . . . . . . . . . . . . . . . .0.8mm-pitch plastic molded QFP
80D0 . . . . . . . . . . . 0.8mm-pitch ceramic LCC (EPROM version)
ROM
External
60K
48K
32K
28K
24K
20K
M37630M4T
16K
12K
8K
M37630E4T
Mass product
Under development
384
512
640
RAM size (bytes)
768
896
1024
Fig. 4
Memory expansion plan
Currently supported products are listed below:
Table 2: List of supported products
Product
M37630M4T-XXXFP
M37630E4T-XXXFP
M37630E4FP
M37630E4FS
16384
(16252)
80D0
512
44P6N-A
(P)ROM size (bytes)
ROM size for User ( )
RAM size (bytes)
Package
Mask ROM version
One Time PROM version
One Time PROM version (blank)
EPROM version
Remarks
As of March 1998
MITSUBISHI
ELECTRIC
5
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