7220 Datasheet, PDF (140/303 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

M37220M3-XXXSP/FP
4.1 Performance overview
4.1 Performance overview
This chapter is described about M37220M3-XXXSP/FP.
M37220M3-XXXSP/FP has the common functions with M37221M6-XXXSP/FP except for part of functions.
This chapter explains the differences between M37220M3-XXXSP/FP and M37221M6-XXXSP/FP. Therefore,
refer to the corresponding descriptions of M37221M6-XXXSP/FP about the common functions.
The 8-bit microcomputer M37220M3-XXXSP/FP has many additional functions for tuning system for TV:
Table 4.1.1 Performance overview (1)
Parameter
Number of basic instructions
Instruction execution time
Clock frequency
Memory size
ROM
RAM
CRT ROM
CRT RAM
Input/Output ports
P00–P07
I/O
P10–P17
I/O
P20, P21
I/O
P22–P27
I/O
P30, P31
I/O
P32
P33, P34
P52–P55
Serial I/O
A-D comparator
D-A converter
PWM output circuit
Timers
Subroutine nesting
Interrupt
I/O
Input
Output
Clock generating circuit
Power source voltage
Performance
71
0.5 µs (the minimum instruction execution time, at 8
MHz oscillation frequency)
8 MHz (maximum)
12 K bytes
256 bytes
4 K bytes
80 bytes
8-bit ! 1 (N-channel open-drain output structure, can be
used as PWM output pins, INT input pins, A-D input pin)
8-bit ! 1 (CMOS input/output structure, can be used as
A-D input pins, INT input pin)
2-bit ! 1 (CMOS input/output or N-channel open-drain
output structure, can be used as serial I/O pins)
6-bit ! 1 (CMOS input/output structure, can be used as
serial input pin, external clock input pins)
2-bit ! 1 (CMOS input/output or N-channel open-drain
output structure, can be used as D-A conversion output
pins, A-D input pins)
1-bit ! 1 (N-channel open-drain output structure)
2-bit ! 1 (can be used as CRT display clock I/O pins)
4-bit ! 1 (CMOS output structure, can be used as CRT
output pins)
8-bit ! 1
6 channels (6-bit resolution)
2 (6-bit resolution)
14-bit ! 1, 8-bit ! 6
8-bit timer ! 4
96 levels (maximum)
External interrupt ! 3, Internal timer interrupt ! 4, Serial
I/O interrupt ! 1, CRT interrupt ! 1, f(XIN)/4096 interrupt
! 1, VSYNC interrupt ! 1, BRK interrupt ! 1
2 built-in circuits (externally connected a ceramic resonator
or a quartz-crystal oscillator)
5 V ± 10 %
4-2
7220 Group User’s Manual