7477 datasheet(2/48 Pages) RENESAS

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MITSUBISHI MICROCOMPUTERS

7477/7478 GROUP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

DESCRIPTION

The 7477/7478 group is the single-chip microcomputer designed

with CMOS silicon gate technology.

The single-chip microcomputer is useful for business equipment

and other consumer applications.

In addition to its simple instruction set, the ROM, RAM, and I/O

addresses are placed on the same memory map to enable easy

programming.

In addition, built-in PROM type microcomputers with built-in elec-

trically writable PROM, and additional functions equivalent to the

mask ROM version are also available.

7477/7478 group products are shown noted below.

The 7477 and the 7478 differ in the number of I/O por ts, package

outline, and clock generating circuit only.

Version

Mask ROM version

One Time PROM version

(Built-in PROM type microcomputers)

Mask ROM version

One Time PROM version

(Built-in PROM type microcomputers)

PROM version

(Built-in PROM type microcomputer)

Mask ROM version

One Time PROM version

(Built-in PROM type microcomputers)

Mask ROM version

One Time PROM version

(Built-in PROM type microcomputers)

Product

M37477M4-XXXSP/FP

M37477M8-XXXSP/FP

M37477E8SP/FP

M37477E8-XXXSP/FP

M37478M4-XXXSP/FP

M37478M8-XXXSP/FP

M37478E8SP/FP

M37478E8-XXXSP/FP

M37478E8SS

M37477M2TXXXSP/FP*

M37477M4TXXXSP/FP*

M37477M8TXXXSP/FP*

M37477E8TXXXSP/FP*

M37478M2TXXXSP/FP*

M37478M4TXXXSP/FP*

M37478M8TXXXSP/FP*

M37478E8TXXXSP/FP*

q8-bit timers ................................................................................. 4

qProgrammable I/O ports

(Ports P0, P1, P4) .......................................... 18 (7477 group)

20 (7478 group)

qInput ports (Ports P2, P3) .................................... 8 (7477 group)

(Ports P2, P3, P5) ............................16 (7478 group)

q8-bit serial I/O ........................... 1 (UART or clock-synchronized)

q8-bit A-D converter ................................ 4 channels (7477 group)

8 channels (7478 group)

APPLICATIONS

Audio-visual equipment, VCR, Tuner,

Office automation equipment

Extended operating temperature range version

……………………………………………… Automotive controls

* : Extended operating temperature version

FEATURES

qBasic machine-language instructions ...................................... 71

qMemory size

ROM ................. 16384 bytes (M37477M8/E8, M37478M8/E8)

RAM ..................... 384 bytes (M37477M8/E8, M37478M8/E8)

qThe minimum instruction execution time

...................................... 0.5

µs (at 8MHz oscillation frequency)

qPower source voltage

.......... 2.7 to 4.5V (at 2.2VCC – 2.0MHz oscillation frequency)

............................. 4.5 to 5.5V (at 8MHz oscillation frequency)

qPower dissipation in normal mode

.................................... 35mW (at 8MHz oscillation frequency)

qSubroutine nesting

................... 192 levels max. (M37477M8/E8, M37478M8/E8)

qInterrupt .................................................... 13 sources, 11 vectors

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