To all our customers
Regarding the change of names mentioned in the document, such as Mitsubishi
Electric and Mitsubishi XX, to Renesas Technology Corp.
The semiconductor operations of Hitachi and Mitsubishi Electric were transferred to Renesas
Technology Corporation on April 1st 2003. These operations include microcomputer, logic, analog
and discrete devices, and memory chips other than DRAMs (flash memory, SRAMs etc.)
Accordingly, although Mitsubishi Electric, Mitsubishi Electric Corporation, Mitsubishi
Semiconductors, and other Mitsubishi brand names are mentioned in the document, these names
have in fact all been changed to Renesas Technology Corp. Thank you for your understanding.
Except for our corporate trademark, logo and corporate statement, no changes whatsoever have been
made to the contents of the document, and these changes do not constitute any alteration to the
contents of the document itself.
Note : Mitsubishi Electric will continue the business operations of high frequency & optical devices
and power devices.
Renesas Technology Corp.
Customer Support Dept.
April 1, 2003
MITSUBISHI MICROCOMPUTERS
M37273M8–XXXSP, M37273MF–XXXSP
M37273E8SP, M37273EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
1. DESCRIPTION
The M37273M8-XXXSP and M37273MF-XXXSP are single-chip mi-
crocomputers designed with CMOS silicon gate technology. They
have a OSD, data slicer, and I
2
C-BUS interface, so it is useful for a
channel selection system for TV with a closed caption decoder.
The features of the M37273E8SP and M37273EFSP are similar to
those of the M37273M8-XXXSP and M37273MF-XXXSP except that
the chip has a built-in PROM which can be written electrically. The
difference between M37273M8-XXXSP and M37273MF-XXXSP are
the ROM size and RAM size. Accordingly, the following descriptions
will be for the M37273M8-XXXSP.
2. FEATURES
qNumber
of basic instructions .................................................... 71
qMemory
size
ROM .............. 32K bytes
(M37273M8-XXXSP, M37273E8SP)
60K bytes
(M37273MF-XXXSP, M37273EFSP)
RAM ............... 1152 bytes
(M37273M8-XXXSP, M37273E8SP)
1472 bytes
(M37273MF-XXXSP, M37273EFSP)
(*ROM correction memory included)
qMinimum
instruction execution time
......................................... 0.5
µs
(at 8 MHz oscillation frequency)
qPower
source voltage ................................................. 5 V
±
10 %
qSubroutine
nesting ............................................. 128 levels (Max.)
qInterrupts
....................................................... 17 types, 16 vectors
q8-bit
timers .................................................................................. 6
qProgrammable
I/O ports (Ports P0, P1, P2, P3
0
, P3
1
) ............. 26
qInput
ports (Ports P5
0
, P5
1
) ........................................................ 2
qOutput
ports (Ports P5
2
–P5
7
,P6) .............................................. 14
q12
V withstand ports ................................................................... 6
qLED
drive ports ........................................................................... 4
qSerial
I/O ............................................................ 8-bit
!
1 channel
qMulti-master
I
2
C-BUS interface .............................. 1 (2 systems)
qA-D
comparator (6-bit resolution) ................................ 6 channels
qPWM
output circuit ......................................................... 8-bit
!
6
qPower
dissipation
In high-speed mode ......................................................... 165 mW
(at V
CC
= 5.5V, 8 MHz oscillation frequency, OSD on, and Data
slicer on)
In low-speed mode ......................................................... 0.33 mW
(at V
CC
= 5.5V, 32 kHz oscillation frequency)
qROM
correction function ................................................ 2 vectors
qClosed
caption data slicer
qOSD
function
Display characters ................................... 32 characters
!
2 lines
(It is possible to display 3 lines or more by software)
Kinds of characters ........................................................ 254 kinds
Character display area ............................ CC mode: 16
!
26 dots
OSD mode: 16
!
20 dots
Kinds of character sizes ..................................... CC mode: 1 kind
OSD mode: 8 kinds
Kinds of character colors .................................. 8 colors (R, G, B)
Coloring unit ................... character, character background, raster
Display position
Horizontal: 128 levels
Vertical: 512 levels
Attribute ........................................................................................
CC mode: smooth italic, underline, flash, automatic solid space
OSD mode: border
Smoth roll-up
Window function
3. APPLICATION
TV with a closed caption decoder
Rev. 1.0
MITSUBISHI MICROCOMPUTERS
M37273M8–XXXSP, M37273MF–XXXSP
M37273E8SP, M37273EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
TABLE OF CONTENTS
1. DESCRIPTION .......................................................................... 1
2. FEAUTURES ............................................................................. 1
3. APPLICATION ............................................................................ 1
4. PIN CONFIGURATION .............................................................. 3
5. FUNCTIONAL BLOCK DIAGRAM ............................................. 4
6. PERFORMANCE OVERVIEW ................................................... 5
7. PIN DESCRIPTION ................................................................... 7
8. FUNCTIONAL DESCRIPTION ................................................. 11
8.1 CENTRAL PROCESSING UNIT (CPU) .................... 11
8.2 MEMORY .................................................................. 12
8.3 INTERRUPTS ........................................................... 18
8.4 TIMERS ..................................................................... 23
8.5 SERIAL I/O ................................................................ 26
8.6 MULTI-MASTER I
2
C-BUS INTERFACE .................... 29
8.7 PWM OUTPUT CIRCUIT .......................................... 42
8.8 A-D COMPARATOR .................................................. 46
8.9 ROM CORRECTION FUNCTION ............................. 48
8.10 DATA SLICER ......................................................... 49
8.11 OSD FUNCTIONS ................................................... 60
8.11.1 Display Position ....................................... 65
8.11.2 Dot size .................................................... 69
8.11.3 Clock for OSD .......................................... 70
8.11.4 Field Determination Display ..................... 71
8.11.5 Memory For OSD ..................................... 73
8.11.6 Character Color ....................................... 77
8.11.7 Character Background Color ................... 77
8.11.8 OUT1, OUT2 Signals ............................... 78
8.11.9 Attribute .................................................... 79
8.11.10 Multiple Display ...................................... 84
8.11.11 Automatic Solid Space Function ............ 85
8.11.12 Window Function ................................... 86
8.11.13 OSD Output Pin Control ........................ 88
8.11.14 Raster Coloring Function ....................... 89
8.12. SOFTWARE RUNAWAY DETECT FUNCTION ..... 91
8.13. RESET CIRCUIT .................................................... 92
8.14. CLOCK GENERATING CIRCUIT ........................... 93
8.15. DISPLAY OSCILLATION CIRCUIT ........................ 96
8.16. AUTO-CLEAR CIRCUIT ......................................... 96
8.17. ADDRESSING MODE ............................................ 96
8.18. MACHINE INSTRUCTIONS ................................... 96
9. PROGRAMMING NOTES ........................................................ 96
10. ABSOLUTE MAXIMUM RATINGS ......................................... 97
11. RECOMMENDED OPERATING CONDITIONS ..................... 97
12. ELECTRIC CHARACTERISTICS .......................................... 98
13. A-D COMPARISON CHARACTERISTICS ........................... 100
14. MULTI-MASTER I
2
C-BUS BUS LINE CHARACTERISTICS ......... 100
15. PROM PROGRAMMING METHOD ..................................... 101
16. DATA REQUIRED FOR MASK ORDERS ............................ 102
17. MASK CONFIRMATION FORM ........................................... 103
18. MARK SPECIFICATION FORM ........................................... 109
19. ONE TIME PROM VERSIONS M37272E8SP/FP,
M37272EFSP MARKING ..................................................... 110
20. APPENDIX ........................................................................... 111
21. PACKAGE OUTLINE ........................................................... 136
Rev. 1.0
2
MITSUBISHI MICROCOMPUTERS
M37273M8–XXXSP, M37273MF–XXXSP
M37273E8SP, M37273EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
4. PIN CONFIGURATION
P5
0
/H
SYNC
P5
1
/V
SYNC
P0
0
/PWM0
P0
1
/PWM1
P5
6
P0
2
/PWM2
P5
7
P0
3
/PWM3
P6
0
P0
4
/PWM4
P0
5
/PWM5
P0
6
/INT2/AD4
P6
1
P0
7
/INT1
P6
2
P2
3
/TIM3
P2
4
/TIM2
P2
5
AV
CC
HLF
V
HOLD
CV
IN
CNV
SS
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
22
23
24
25
26
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
P5
2
/R
P5
3
/G
P5
4
/B
P5
5
/OUT1
P6
3
P2
0
/S
CLK
P6
4
P2
1
/S
OUT
P6
5
P2
2
/S
IN
P6
6
P1
0
/OUT2
P6
7
P1
1
/SCL1
P1
2
/SCL2
P1
3
/SDA1
P1
4
/SDA2
P1
5
/AD1/INT3
P1
6
/AD2
P1
7
/AD3
P3
0
/AD5
P3
1
/AD6
RESET
P2
6
/OSC1/X
CIN
P2
7
/OSC2/X
COUT
V
CC
Outline 52P4B
M37273M8-XXXSP,M37273MF-XXXSP
M37273E8SP,M37273EFSP
Fig. 4.1 Pin Configuration (Top View)
Rev. 1.0
3
INT1
INT2
INT3
SDA2
SDA1
SCL2
SCL1
S
IN
S
CLK
S
OUT
PWM5
PWM4
PWM3
PWM2
PWM1
PWM0
AD1–AD6
14 12 11 10 8 6 4 3
33 34 35 36 37 38 39 41
18 17 16 43 45
47
31 32
40 42
44 46 48 15 13
9
7 5
49 50 51 52 2
1
I/O port P0
I/O port P1
I/O port P2
I/O ports P3
0
, P3
1
Output ports P6
Output ports P5
2
–P5
7
Output for display
Input ports P5
0
, P5
1
Synchronous signal input
OUT1
B
G
R
V
SYNC
H
SYNC
4
V
SS
CNV
SS
26
23
22
21
20
Clock input Clock output
Pins for data slicer
CV
CV
IN
V
HOLD
HLF
29
28
30
19
27
X
IN
X
OUT
Reset input
RESET
AV
CC
V
CC
I/O ports P2
6
, P2
7
Clock input for OSD/ Clock output for OSD/
sub-clock input sub-clock output
OSC1/X
CIN
OSC2/X
COUT
24
25
Clock
generating
circuit
Data slicer
Fig. 5.1 Functional Block Diagram of M37273
TIM2
TIM3
Timer count source
selection circuit
Timer 1
T1 (8)
Timer 2
T2 (8)
Timer 3
T3 (8)
Program
counter
Data bus
5. FUNCTIONAL BLOCK DIAGRAM
RAM
1152 bytes
PC
L
(8)
Progam
counter
ROM
32 K bytes
ROM
correction
circuit
PC
H
(8)
Address bus
Timer 4
T4 (8)
Control signal
Index
register
8-bit
arithmetic
and
logical unit
X (8)
Y (8)
Instruction
register (8)
Stack
pointer
S (8)
Timer 5
T5 (8)
Timer 6
T6 (8)
Instruction
decoder
Accumulator
A (8)
Processor
status
register
PS (8)
Index
register
CRT
circuit
A-D
comparator
SI/O
Multi-master
I2C-BUS
interface
PWM
P0 (8)
P1 (8)
P2 (6)
P3 (2)
P6 (8)
OUT2
P1
0
P5 (8)
MITSUBISHI MICROCOMPUTERS
M37273M8–XXXSP, M37273MF–XXXSP
M37273E8SP, M37273EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
Rev. 1.0
京公网安备 11010802033920号
EEWORLD
