M37221 Mitsubishi, M37221 Datasheet - Page 3

• Manufacturer Part Number: M37221
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
• Manufacturer: Mitsubishi

FUNCTIONS
Number of basic instructions
Instruction execution time
Clock frequency
Memory size
Input/Output ports
Serial I/O
Multi-master I
A-D comparator
D-A converter
PWM output circuit
Timers
ROM correction function
Subroutine nesting
Interrupt
Power source voltage
Power dissipation
Package
CRT display function
Clock generating circuit
Operating temperature range
Device structure
2
C-BUS interface
Parameter
CRT ON
CRT OFF
In stop mode
Number of display characters
Dot structure
Kinds of characters
Kinds of character sizes
Kinds of character colors
Display position (horizontal, vertical)
ROM
RAM
CRT ROM
CRT RAM
P0
P1
P1
P2
P2
P3
P3
P3
P5
0
1
0
2
0
2
3
2
, P1
–P1
, P2
–P2
, P3
, P3
–P5
5
4
1
7
1
4
5
–P1
7
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
Output
Input
I/O
I/O
I/O
I/O
I/O
I/O
I/O
71
0.5 s (the minimum instruction execution time, at 8 MHz oscillation fre-
quency)
8 MHz (maximum)
62 K bytes
1216 bytes
8 K bytes
96 bytes
8-bit
output pins, INT input pins, A-D input pin)
4-bit
A-D input pins, INT input pin)
4-bit
BUS interface)
2-bit
can be used as serial I/O pins)
6-bit
external clock input pins)
2-bit
can be used as A-D input pins, D-A conversion output pins)
1-bit
2-bit
4-bit
8-bit
1 (2 systems)
6 channels (6-bit resolution)
2 (6-bit resolution)
14-bit
8-bit timer
32 bytes
96 levels (maximum)
External interrupt
CRT interrupt
f(X
2 built-in circuits (externally connected a ceramic resonator or a quartz-
crystal oscillator)
5 V ± 10 %
165 mW typ. (at oscillation frequency f
110 mW typ. (at oscillation frequency f
1.65 mW (maximum)
–10 °C to 70 °C
CMOS silicon gate process
42-pin shrink plastic molded DIP
24 characters
12
256 kinds
3 kinds
Maximum 7 kinds (R, G, B); can be specified by the character
64 levels (horizontal)
IN
)/4096 interrupt
16 dots
M37221EF-XXXSP,M37221EFSP
1 (CMOS input/output structure, can be used as multi-master I
1 (N-channel open-drain output structure)
1 (can be used as CRT display clock I/O pins)
1 (CMOS output structure, can be used as CRT output pins)
1
1 (CMOS input/output structure, can be used as CRT output pin,
1 (N-channel open-drain output structure, can be used as PWM
1 (CMOS input/output or N-channel open-drain output structure,
1 (CMOS input/output structure, can be used as serial input pin,
1 (CMOS input/output or N-channel open-drain output structure,
1, 8-bit
2
4
2 lines (maximum 16 lines by software)
6
1, Multi-master I
3, Internal timer interrupt
1, V
with ON-SCREEN DISPLAY CONTROLLER
128 levels (vertical)
SYNC
Functions
interrupt
2
CPU
CPU
C-BUS interface interrupt
= 8 MHz, f
= 8 MHz)
1, BRK interrupt
4, Serial I/O interrupt
CRT
= 8 MHz)
1
2
C-
1,
1,
3