Features: Number of basic instructions ..............................................................................................71
Memory size
ROM ........................................................................................................................ 62 K bytes
RAM ........................................................................................................................ 1216 bytes
ROM for display .......................................................................................................... 8 K bytes
RAM for display ............................................................................................................96 bytes
The minimum instruction execution time.........................0.5 s (at 8 MHz oscillation frequency)
Power source voltage .............................................................................................. 5 V ±10 %
Power dissipation............. 165 mW (at 8 MHz oscillation frequency, VCC=5.5V, at CRT display)
Subroutine nesting ................................................................................... 96 levels (maximum)
Interrupts ................................................................................................. 14 types, 14 vectors
8-bit timers ..............................................................................................................................4
Programmable I/O ports (Ports P0, P1, P2, P30-32) .............................................................. 27
Input ports (Ports P33, P34) ....................................................................................................2
Output ports (Ports P52-55) ....................................................................................................4
12 V withstand ports ...............................................................................................................6
LED drive ports ........................................................................................................................4
Serial I/O ........................................................................................................ 8-bit 5 1 channel
Multi-master I2C-BUS interface ............................................................................ 1 (2 systems)
A-D comparator (6-bit resolution) ............................................................................. 6 channels
D-A converter (6-bit resolution) ...............................................................................................2
PWM output circuit...................................................................................... 14-bit 5 1, 8-bit 5 6
ROM correction function ......................................................................................... 32 bytes 5 2
CRT display function
Number of display characters ............................... 24 characters 5 2 lines (16 lines maximum)
Kinds of characters ................................................................................................... 256 kinds
Dot structure ....................................................................................................... 12 5 16 dots
Kinds of character sizes ................................................................................................ 3 kinds
Kinds of character colors (It can be specified by the character) maximum 7 kinds (R, G, B)
Kinds of character background colors (It can be specified by the character) maximum 7 kinds (R, G, B)
Kinds of raster colors (maximum 7 kinds)
Display position
Horizontal .................................................................................................................... 64 levels
Vertical ................................................................. 128 levels Bordering (horizontal and vertical
ApplicationTVPinout
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 P00P05 |
0.3 to 13
|
V |
|
IOH |
Circuit current R,G,B,OUT1, P10P17,P20P27, P30, P31 ,D-A |
|
0 to 1 (Note 1) |
mA |
|
IOL1 |
Circuit current R,G,B,OUT1,P06,P07, P10,
P15P17, P20P23, P30P32, D-A |
|
0 to2 (Note 2) |
mA |
|
IOL2 |
Circuit current P11P14 |
|
0 to 6 (Note 2) |
mA |
|
IOL3 |
Circuit current P00P05 |
|
0 to 1 (Note 2) |
mA |
|
IOL4 |
Circuit current P24, P27 |
|
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 M37221EF-XXXSP and M37221EFSP are single-chip microcomputers designed with CMOS silicon gate technology. They are housed in a 42-pin shrink plastic molded DIP.
In addition to their simple instruction sets, the ROM, RAM and I/O M37221EF-XXXSP and M37221EFSP addresses are placed on the same memory map to enable easy programming.
The M37221EF-XXXSP and M37221EFSP have a PWM output function and a OSD display function, so it is useful for a channel selection system for TV.
M37221EFSP Data Sheet
