Features: • Number of basic instructions ..........................................................................71
• Memory size.
ROM ................................................................................................... 40 K bytes
RAM .....................................................................................................768 bytes
ROM correction memory .........................................................................64 bytes
ROM for OSD ....................................................................................11072 bytes
RAM for OSD ..................................................................................... 1296 bytes
• Minimum instruction execution time.........0.5 s (at 8 MHz oscillation frequency)
• Power source voltage .......................................................................5 V ± 10 %
• Subroutine nesting ..................................................................1.28 levels (Max.)
• Interrupts ...........................................................................18 types, 16 vectors
• 8-bit timers ........................................................................................................6
• Programmable I/O ports (Ports P0, P1, P2, P30, P31) .....................................26
• Input ports (Ports P40P46, P63, P64, P70P72) .........................................12
• Output ports (Ports P52P55) ..........................................................................4
• 12 V withstand ports..........................................................................................7
• LED drive ports ..................................................................................................2
• Serial I/O .................................................................................. 8-bit 5 1 channel
• Multi-master I2C-BUS interface .......................................................1 (2 systems)
• A-D converter (8-bit resolution) ...........................................................4 channels
• PWM output circuit .................................................................14-bit 5 1, 8-bit 5 7
• Power dissipation
In high-speed mode .................................................................................165mW
(at VCC = 5.5V, 8MHz oscillation frequency, CRT on, and Data slicer on)
In low-speed mode .................................................................................0.33mW
(at VCC = 5.5V, 32kHz oscillation frequency)
• Data slicer
• ROM correction function
• OSD function
Display characters ......................................................... 36 characters 5 12 lines
Kinds of characters .............................................................................. 256 kinds
(In EXOSD mode, they can be combined with 16 kinds of extra fonts)
Character display area .................................................. CC mode : 16 5 26 dots
OSD mode : 16 5 20 dots
EXOSD mode : 16 5 26 dots
Kinds of character sizes ........................................................ CC mode : 2 types
OSD mode : 14 types
EXOSD mode : 6 types
It can be specified by a character unit (maximum 7 kinds).
Character font coloring, character background coloring
It can be specified by a screen unit (maximum 7 kinds).
Extra font coloring, raster coloring , border coloring
Kinds of character colors ......................................... CC mode : 7 kinds (R, G, B)
OSD mode : 7 kinds (R, G, B) EXOSD mode : 5 kinds (R, G, B)
Display position
Horizontal ......................................................................................256 levels
Vertical .........................................................................................1024 levels
Attribute ......................................... CC mode : smooth italic, underline, flash
OSD mode : border EXOSD mode : border, extra font (16 kinds) Automatic solid
space function Window function Dual layer OSD function
ApplicationTV with a closed caption decoderPinout
Specifications
|
Symbol |
Parameter |
Conditions |
Ratings |
Unit |
|
VCC,AVCC |
Power source voltageVCC, AVCC |
All voltages are based on VSS.Output transistors are cut off. |
0.3 to 6 |
V |
|
VI |
Input voltage CNVSS |
0.3 to 6 |
V |
|
VI |
Output voltage P00P07, P10P17, P20,P21,
P30,P31, P40P46,P64,P63,P70P72, XIN, HSYNC, VSYNC,RESET |
0.3 to VCC+0.3 |
V |
|
VO |
Output voltage P03, P10P17, P20P27, P30,P31, P52P55, SOUT, SCLK, XOUT,OSC2 |
0.3 to VCC+0.3 |
V |
|
VO |
Output voltage P00P02, P04P07 |
0.3 to 13
|
V |
|
IOH |
Circuit current P52P55, P10, P03, P15P17,P20P27, P30, P31 |
|
0 to 1 (Note 1) |
mA |
|
IOL1 |
Circuit current P52P55, P10, , P03, P15P17,P20P27, SOUT, SCLK |
|
0 to2 (Note 2) |
mA |
|
IOL2 |
Circuit current P11P14 |
|
0 to 6 (Note 2) |
mA |
|
IOL3 |
Circuit current P00P02, P04P07 |
|
0 to 1 (Note 2) |
mA |
|
IOL4 |
Circuit current P30, P31 |
|
0 to 10 (Note 3) |
mA |
|
Pd |
Power dissipation |
Ta = 25°C |
550 |
mW |
|
Topr |
Operating temperature |
|
10 to 70 |
°C |
|
Tstg |
Storage temperature |
|
40 to 125 |
°C |
DescriptionThe M37274MA-XXXSP is a single-chip microcomputer designed with CMOS silicon gate technology. It is housed in a 52-pin shrink plastic molded DIP.
In addition to their simple instruction sets, the ROM, RAM and I/O M37274MA-XXXSP addresses are placed on the same memory map to enable easy programming.
The M37274MA-XXXSP has a OSD function and a data slicer function, so it is useful for a channel selection system for TV with a closed caption decoder.
M37274MA-XXXSP Data Sheet
