7220 datasheet(140/303 Pages) RENESAS

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M37220M3-XXXSP/FP

4.1 Performance overview

7220 Group User’s Manual

4-2

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 %

Number of basic instructions

Instruction execution time

Clock frequency

Memory size

Input/Output ports

Serial I/O

A-D comparator

D-A converter

PWM output circuit

Timers

Subroutine nesting

Interrupt

Clock generating circuit

Power source voltage

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

ROM

RAM

CRT ROM

CRT RAM

P00–P07

P10–P17

P20, P21

P22–P27

P30, P31

P32

P33, P34

P52–P55

I/O

Input

Output

Performance

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