MITSUBISHI MICROCOMPUTERS
M37220M3-XXXSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
DESCRIPTION
PIN CONFIGURATION (TOP VIEW)
The M37220M3-XXXSP is a single-chip microcomputer designed with
CMOS silicon gate technology. It is housed in a 42-pin shrink plastic
molded DIP.
In addition to their simple instruction sets, the ROM, RAM and I/O
addresses are placed on the same memory map to enable easy pro-
gramming.
1
2
3
42
41
40
39
HSYNC
VSYNC
P52/R
P53/G
P54/B
P00/PWM0
P01/PWM1
P02/PWM2
P03/PWM3
P04/PWM4
P05/PWM5
The M37220M3-XXXSP has a PWM output function and a OSD dis-
play function, so it is useful for a channel selection system for TV.
P55/OUT
P20/SCLK
P21/SOUT
P22/SIN
4
5
38
37
36
6
7
8
FEATURES
Number of basic instructions .....................................................71
•
•
35
34
P10
Memory size
9
P11
P06/INT2/A-D4
P07/INT1
ROM ........................................................12 K bytes
RAM ......................................................... 256 bytes
ROM for display......................................... 4 K bytes
RAM for display .......................................... 80 bytes
10
33
32
P12
11
12
P23/TIM3
P13
31
P24/TIM2
P25
P14
13
14
30
29
P15/A-D1/INT3
P16/A-D2
P17/A-D3
P30/A-D5/DA1
The minimum instruction execution time
•
P26
P27
D-A
P32
.......................................... 0.5µs (at 8 MHz oscillation frequency)
15
16
17
28
27
26
Power source voltage .................................................. 5 V ± 10 %
•
•
Power dissipation............................................................. 165 mW
P31/A-D6/DA2
RESET
(at 8 MHz oscillation frequency, VCC=5.5V, at CRT display)
18
19
25
24
CNVSS
XIN
Subroutine nesting ....................................... 96 levels (maximum)
•
OSC1/P33
OSC2/P34
Interrupts ....................................................... 13 types, 13 vectors
•
20
21
23
22
XOUT
8-bit timers .................................................................................. 4
•
Programmable I/O ports (Ports P0, P1, P2, P30–P32) .............. 27
VSS
VCC
•
Input ports (Ports P33, P34) ......................................................... 2
•
Output ports (Ports P52–P55) ...................................................... 4
•
12 V withstand ports ....................................................................6
•
Outline 42P4B
LED drive ports ........................................................................... 4
•
Serial I/O ............................................................ 8-bit ✕ 1 channel
•
A-D comparator (6-bit resolution) ................................ 6 channels
•
D-A converter (6-bit resolution) ...................................................2
•
PWM output circuit ......................................... 14-bit ✕ 1, 8-bit ✕ 6
•
CRT display function
•
Number of display characters ................ 24 characters ✕ 2 lines
(16 lines maximum)
Kinds of characters ..................................................... 128 kinds
Dot structure .......................................................... 12 ✕ 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 raster colors (maximum 7 kinds)
Display position
Horizontal .................................................................. 64 levels
Vertical .................................................................... 128 levels
Bordering (horizontal and vertical)
APPLICATION
TV