MITSUBISHI MICROCOMPUTERS
7536 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
DESCRIPTION
The 7536 Group is the 8-bit microcomputer based on the 740 family
core technology.
The 7536 Group has a USB, 8-bit timers, and an A-D converter, and
is useful for an input device for personal computer peripherals.
•
Serial I/O1 ................................ used only for Low Speed in USB
•
•
•
(USB/UART)
Serial I/O2 ...................................................................... 8-bit
✕
1
(Clock-synchronized)
A-D converter ................................................ 10-bit
✕
8 channels
Clock generating circuit ............................................. Built-in type
(connect to external ceramic resonator or quartz-crystal oscillator )
FEATURES
•
•
•
•
•
•
Basic machine-language instructions ....................................... 69
The minimum instruction execution time .......................... 0.34
µs
(at 6 MHz oscillation frequency for the shortest instruction)
Memory size
ROM ..................................................................... 8K to 16K bytes
RAM .................................................................... 256 to 384 bytes
Programmable I/O ports ........................................................... 33
Interrupts .................................................... 14 sources, 8 vectors
Timers ............................................................................ 8-bit
✕
3
•
Watchdog timer ............................................................ 16-bit
✕
1
•
Power source voltage
•
•
At 6 MHz X
IN
oscillation frequency at ceramic resonator
................................................................................... 4.1 to 5.5 V
Power dissipation ............................................ 30 mW (standard)
Operating temperature range ................................... –20 to 85
°C
APPLICATION
Input device for personal computer peripherals
PIN CONFIGURATION (TOP VIEW)
P1
4
/CNTR
0
P1
5
P1
6
P2
0
/AN
0
P2
1
/AN
1
NC
P2
2
/AN
2
P2
3
/AN
3
P2
4
/AN
4
P2
5
/AN
5
P2
6
/AN
6
P2
7
/AN
7
P4
0
P4
1
V
REF
RESET
CNV
SS
Vcc
X
IN
X
OUT
V
SS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
P1
3
/S
DATA
P1
2
/S
CLK
P1
1
/T
X
D/D+
P1
0
/R
X
D/D-
P0
7
P0
6
P0
5
P0
4
P0
3
P0
2
P0
1
P0
0
USBV
REFOUT
P3
7
/INT
0
P3
6
(LED
6
)/INT
1
P3
5
(LED
5
)
P3
4
(LED
4
)
P3
3
(LED
3
)
P3
2
(LED
2
)
P3
1
(LED
1
)
P3
0
(LED
0
)
Package type:42P4B
Fig. 1 Pin configuration of M37536M4-XXXSP,M37536E8SP
M37536M4-XXXSP
M37536E8SP
MITSUBISHI MICROCOMPUTERS
7536 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
PIN CONFIGURATION (TOP VIEW)
P1
4
/CNTR
0
P1
5
P1
6
P2
0
/AN
0
P2
1
/AN
1
NC
P2
2
/AN
2
P2
3
/AN
3
P2
4
/AN
4
P2
5
/AN
5
P2
6
/AN
6
P2
7
/AN
7
P4
0
P4
1
V
REF
RESET
CNV
SS
Vcc
X
IN
X
OUT
V
SS
1
2
3
4
5
6
7
42
41
40
39
38
37
36
8
9
10
11
12
13
14
15
16
17
18
19
20
21
35
34
33
32
31
30
29
28
27
26
25
24
23
22
P1
3
/S
DATA
P1
2
/S
CLK
P1
1
/T
X
D/D+
P1
0
/R
X
D/D-
P0
7
P0
6
P0
5
P0
4
P0
3
P0
2
P0
1
P0
0
USBV
REFOUT
P3
7
/INT
0
P3
6
(LED
6
)/INT
1
P3
5
(LED
5
)
P3
4
(LED
4
)
P3
3
(LED
3
)
P3
2
(LED
2
)
P3
1
(LED
1
)
P3
0
(LED
0
)
Outline 42S1M
Fig. 2 Pin configuration of M37536RSS
M37536RSS
2
FUNCTIONAL BLOCK DIAGRAM (Package: 42P4B)
Reset input
V
SS
V
CC
18
16
17
21
Clock input Clock output
X
IN
X
OUT
RESET
CNV
SS
FUNCTIONAL BLOCK
13 14
15
29 28 27 26 25 24 23 22
12 11 10 9
8
7
5
4
30
3
2
1 42 41 40 39
38 37 36 35 34 33 32 31
V
REF
USBV
REFOUT
MITSUBISHI MICROCOMPUTERS
I/O port P4
I/O port P3
I/O port P2
I/O port P1
I/O port P0
Key-on wakeup
Fig. 3 Functional block diagram
C P U
19
20
Clock generating circuit
RAM
ROM
X
Prescaler 12 (8)
Prescaler X (8)
S
PC
H
PS
CNTR
0
A
Timer 1 (8)
Timer 2 (8)
Timer X (8)
Y
PC
L
Watchdog timer
Reset
0
A-D
converter
(10)
SI/O1(8)
USB(LS)
SI/O2(8)
INT
0
INT
1
P4(2)
P3(8)
P2(8)
P1(7)
P0(8)
7536 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
3
MITSUBISHI MICROCOMPUTERS
7536 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
PIN DESCRIPTION
Table 1 Pin description
Pin
Vcc, Vss
V
REF
USBV
REFOUT
CNVss
RESET
X
IN
X
OUT
P0
0
–P0
7
Name
Power source
Analog reference
voltage
USB reference
voltage output
CNVss
Reset input
Clock input
Clock output
I/O port P0
•Reference voltage input pin for A-D converter
•Output pin for pulling up a D- line with 1.5 kΩ external resistor
•Chip operating mode control pin, which is always connected to Vss.
•Reset input pin for active “L”
•Input and output pins for main clock generating circuit
•Connect a ceramic resonator or quartz crystal oscillator between the X
IN
and X
OUT
pins.
•If an external clock is used, connect the clock source to the X
IN
pin and leave the X
OUT
pin open.
•8-bit I/O port.
•I/O direction register allows each pin to be individually pro-
grammed as either input or output.
•CMOS compatible input level
•CMOS 3-state output structure
•Whether a built-in pull-up resistor is to be used or not can be
determined by program.
P1
0
/RxD/D-
P1
1
/TxD/D+
P1
2
/S
CLK
P1
3
/S
DATA
P1
4
/CNTR
0
I/O port P1
•7-bit I/O port
•I/O direction register allows each pin to be individually pro-
grammed as either input or output.
•CMOS compatible input level
•CMOS 3-state output structure
•CMOS/TTL level can be switched for P1
0
, P1
2
, P1
3
.
•When using the USB function, input level of ports P1
0
and
P1
1
becomes USB input level, and output level of them
becomes USB output level.
I/O port P2
•8-bit I/O port having almost the same function as P0
•CMOS compatible input level
•CMOS 3-state output structure
P3
0
–P3
5
I/O port P3
•8-bit I/O port
•I/O direction register allows each pin to be individually programmed as either input or output.
•CMOS compatible input level (CMOS/TTL level can be switched for P3
6
, P3
7
).
•CMOS 3-state output structure
P3
6
/INT
1
P3
7
/INT
0
P4
0
, P4
1
I/O port P4
•P3
0
to P3
6
can output a large current for driving LED.
•Whether a built-in pull-up resistor is to be used or not can be
determined by program.
•2-bit I/O port
•I/O direction register allows each pin to be individually programmed as either input or output.
•Input pins for A-D converter
•Timer X function pin
•Serial I/O1 function pin
•Serial I/O2 function pin
•Key-input (key-on wake up
interrupt input) pins
Function
•Apply voltage of 4.1 to 5.5 V to Vcc, and 0 V to Vss.
Function expect a port function
P1
5
, P1
6
P2
0
/AN
0
–
P2
7
/AN
7
•Interrupt input pins
4
MITSUBISHI MICROCOMPUTERS
7536 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
GROUP EXPANSION
Mitsubishi plans to expand the 7536 group as follow:
Memory type
Support for Mask ROM version, One Time PROM version, and Emu-
lator MCU .
Memory size
ROM/PROM size .................................................. 8 K to 16 K bytes
RAM size ................................................................ 256 to 384 bytes
Package
42P4B ................................................... 42-pin plastic molded SDIP
42SIM ...................................... 42-pin shrink ceramic PIGGY BACK
ROM size
(Byte)
16K
M37536E8
8K
M37536M4
0
128
256
384
RAM size
(Byte)
Note.
Products under development: the development schedule and specification
may be revised without notice.
Fig. 4 Memory expansion plan
Currently supported products are listed below.
Table 2 List of supported products
Product
M37536M4-XXXSP
M37536E8SP
M37536RSS
(P) ROM size (bytes)
ROM size for User ()
8192 (8062)
16384 (16254)
RAM size
(bytes)
256
384
384
Package
42P4B
42P4B
42S1M
Remarks
Mask ROM version
One Time PROM version (blank)
Emulator MCU
5
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