MITSUBISHI MICROCOMPUTERS
7516 Group (Spec. H)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
DESCRIPTION
The 7516 group (Spec. H) is the 8-bit microcomputer based on the
740 family core technology.
The 7516 group (Spec. H) is designed for the household products
and office automation equipment and includes serial I/O functions,
8-bit timer, A-D converter, and I
2
C-BUS interface.
FEATURES
qBasic
machine-language instructions ...................................... 71
qMinimum
instruction execution time .................................. 0.5
µs
(at 8 MHz oscillation frequency)
qMemory
size
ROM ............................................................... 16 K to 24 K bytes
RAM ................................................................... 512 to 640 bytes
qProgrammable
input/output ports ............................................ 36
qInterrupts
................................................. 17 sources, 16 vectors
qTimers
............................................................................. 8-bit
✕
4
qSerial
I/O1 ................... 8-bit
✕
1 (UART or Clock-synchronized)
qSerial
I/O2 ................................... 8-bit
✕
1(Clock-synchronized)
qMulti-master
I
2
C-BUS interface (option) ...................... 1 channel
qPWM
............................................................................... 8-bit
✕
1
qA-D
converter ............................................... 10-bit
✕
6 channels
qWatchdog
timer ............................................................ 16-bit
✕
1
qClock
generating circuit ..................................... Built-in 2 circuits
(connect to external ceramic resonator or quartz-crystal oscillator)
qPower
source voltage
In high-speed mode .................................................. 4.0 to 5.5 V
(at 8 MHz oscillation frequency)
In high-speed mode .................................................. 2.7 to 5.5 V
(at 4 MHz oscillation frequency)
In middle-speed mode ............................................... 2.7 to 5.5 V
(at 8 MHz oscillation frequency)
In low-speed mode .................................................... 2.7 to 5.5 V
(at 32 kHz oscillation frequency)
qPower
dissipation
In high-speed mode .......................................................... 34 mW
(at 8 MHz oscillation frequency, at 5 V power source voltage)
In low-speed mode ............................................................ 60
µW
(at 32 kHz oscillation frequency, at 3 V power source voltage)
qOperating
temperature range .................................... –20 to 85°C
APPLICATION
Office automation equipment, FA equipment, Household products,
Consumer electronics, etc.
P1
0
/(LED
0
)
P0
2
/S
CLK2
33
29
31
28
26
24
P1
1
/(LED
1
)
P0
5
30
32
27
25
23
P1
2
/(LED
2
)
P0
1
/S
OUT2
P0
0
/S
IN2
P0
3
/S
RDY2
PIN CONFIGURATION (TOP VIEW)
P0
4
P0
6
P0
7
P3
5
/AN
5
P3
4
/AN
4
P3
3
/AN
3
P3
2
/AN
2
P3
1
/AN
1
P3
0
/AN
0
V
CC
V
REF
AV
SS
P4
5
P4
4
/INT
3
/PWM
34
35
36
37
38
39
40
41
42
43
44
22
21
20
19
18
P1
3
/(LED
3
)
P1
4
/(LED
4
)
P1
5
/(LED
5
)
P1
6
/(LED
6
)
P1
7
/(LED
7
)
V
SS
X
OUT
X
IN
RESET
P2
0
/X
COUT
P2
1
/X
CIN
M37516MXH-XXXKP
17
16
15
14
13
12
10
P4
3
/INT
2
/S
CMP2
P4
2
/INT
1
P4
0
/CNTR
1
P4
1
/INT
0
P2
7
/CNTR
0
/S
RDY1
P2
5
/SCL
2
/T
X
D
P2
3
/SCL
1
P2
6
/S
CLK1
Package type : 44PJX-A
Fig. 1 M37516MXH-XXXKP pin configuration
P2
4
/SDA
2
/R
X
D
P2
2
/SDA
1
CNV
SS
11
3
2
4
5
6
8
1
7
9
FUNCTIONAL BLOCK
2
Reset input
FUNCTIONAL BLOCK DIAGRAM
Main-clock
input
Main-clock
output
X
IN
17
40
14
11
X
OUT
V
SS
V
CC
RESET
CNV
SS
15
16
Sub-clock
input
Sub-clock
output
Fig.2 Functional block diagram
CPU
X
CIN
X
COUT
Clock generating circuit
RAM
ROM
X
Prescaler 12 (8)
A
Timer 2 (8)
Timer X (8)
Timer Y (8)
Timer 1 (8)
Y
S
PC
H
Prescaler Y (8)
Prescaler X (8)
CNTR
0
PC
L
PS
CNTR
1
Watchdog timer
Reset
A-D
SI/O1(8)
I
2
C(8)
SI/O2(8)
converter
PWM
(8)
(10)
X
CIN
X
COUT
INT
0
–
INT
3
P4(6)
P3(6)
P2(8)
P1(8)
P0(8)
41 42
43 44 1 2 3 4
34 35 36 37 38 39
5 6 7 8 9 10 12 13
18 19 20 21 22 23 24 25
26 27 28 29 30 31 32 33
I/O port P4
I/O port P3
I/O port P2
I/O port P1
I/O port P0
V
REF
MITSUBISHI MICROCOMPUTERS
7516 Group (Spec. H)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
AV
SS
MITSUBISHI MICROCOMPUTERS
7516 Group (Spec. H)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Table 1 Pin description
Pin
V
CC
, V
SS
CNV
SS
V
REF
AVss
RESET
X
IN
X
OUT
P0
0
/S
IN2
P0
1
/S
OUT2
P0
2
/S
CLK2
P0
3
/S
RDY2
P0
4
–P0
7
P1
0
–P1
7
P2
0
/X
COUT
P2
1
/X
CIN
P2
2
/SDA
1
P2
3
/SCL
1
P2
4
/SDA
2
/RxD
P2
5
/SCL
2
/TxD
P2
6
/S
CLK
P2
7
/CNTR
0
/
S
RDY1
I/O port P1
I/O port P2
Name
Power source
CNV
SS
input
Reference
voltage input
Analog power
source input
Reset input
Clock input
Clock output
I/O port P0
Functions
•Apply voltage of 2.7 V – 5.5 V to Vcc, and 0 V to Vss.
•This pin controls the operation mode of the chip.
•Normally connected to V
SS
.
•Reference voltage input pin for A-D converter.
•Analog power source input pin for A-D converter.
•Connect to Vss.
•Reset input pin for active “L”.
•Input and output pins for the clock generating circuit.
•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.
• Serial I/O2 function pin
•8-bit CMOS I/O port.
•I/O direction register allows each pin to be individually
programmed as either input or output.
•CMOS compatible input level.
•CMOS 3-state output structure.
•P1
0
to P1
7
(8 bits) are enabled to output large current for LED drive.
• Sub-clock generating circuit I/O
•8-bit CMOS I/O port.
pins (connect a resonator)
•I/O direction register allows each pin to be individually
• I
2
C-BUS interface function pins
programmed as either input or output.
•CMOS compatible input level.
•P2
2
to P2
5
can be switched between CMOS compat-
ible input level or SMBUS input level in the I
2
C-BUS
interface function.
•P2
0
, P2
1
, P2
4
to P2
7
: CMOS 3-state output structure.
•P2
4
, P2
5
: N-channel open-drain structure in the I
2
C-
BUS interface function.
I/O port P3
•P2
2
, P2
3
: N-channel open-drain structure.
•8-bit CMOS I/O port with the same function as port P0.
•CMOS compatible input level.
•CMOS 3-state output structure.
P4
0
/CNTR
1
P4
1
/INT
0
P4
2
/INT
1
P4
3
/INT
2
/S
CMP2
P4
4
/INT
3
/PWM
P4
5
I/O port P4
•8-bit CMOS I/O port with the same function as port P0.
•CMOS compatible input level.
•CMOS 3-state output structure.
• Interrupt input pin/S
CMP2
output pin
• Interrupt input pin/PWM output pin
• Timer Y function pin
• Interrupt input pins
• I
2
C-BUS interface function pin/
Serial I/O1 function pins
• Serial I/O1 function pin
• Serial I/O1 function pin/
Timer X function pin
Function except a port function
P3
0
/AN
0
–
P3
5
/AN
5
• A-D converter input pin
3
MITSUBISHI MICROCOMPUTERS
7516 Group (Spec. H)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
PART NUMBERING
Product name
M37516
M
6
H–
XXX KP
Package type
KP : 44PJX-A
ROM number
Omitted in One Time PROM version shipped in blank and
flash memory version.
– : standard
Omitted in One Time PROM version shipped in blank and
flash memory version.
H– : Partial specification changed version
ROM/PROM size
9 : 36864 bytes
1 : 4096 bytes
A: 40960 bytes
2 : 8192 bytes
B: 45056 bytes
3 : 12288 bytes
C: 49152 bytes
4 : 16384 bytes
D: 53248 bytes
5 : 20480 bytes
E: 57344 bytes
6 : 24576 bytes
F : 61440 bytes
7 : 28672 bytes
8 : 32768 bytes
The first 128 bytes and the last 2 bytes of ROM are reserved areas ; they
cannot be used as a user’s ROM area.
Memory type
M : Mask ROM version
E : One Time PROM version
Differences of functions
Fig. 3 Part numbering
4
MITSUBISHI MICROCOMPUTERS
7516 Group (Spec. H)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
GROUP EXPANSION
Mitsubishi plans to expand the 7516 group (Spec. H) as follows.
Memory Type
Support for mask ROM and One Time PROM versions.
Memory Size
Mask ROM size ................................................. 16 K to 24 K bytes
One Time PROM size ..................................................... 24 K bytes
RAM size .............................................................. 512 to 640 bytes
Packages
44PJX-A ............................................... 44-pin plastic-molded QFN
Memory Expansion Plan
ROM size (bytes)
ROM
exteranal
32K
28K
Mass production
As of Oct. 2002
24K
20K
M37516M6H/E6H
Mass production
16K
12K
8K
M37516M4H
384
Fig. 4 Memory expansion plan
512
640
768
896
1024
1152
RAM size (bytes)
1280
1408
1536
2048
5
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