38B5 datasheet(2/70 Pages) RENESAS

2 / 70 page

DESCRIPTION

The 38B5 group is the 8-bit microcomputer based on the 740 family

core technology.

The 38B5 group has six 8-bit timers, a 16-bit timer, a fluorescent

display automatic display circuit, 12-channel 10-bit A-D converter, a

serial I/O with automatic transfer function, which are available for

controlling musical instruments and household appliances.

The 38B5 group has variations of internal memory size and packag-

ing. For details, refer to the section on part numbering.

For details on availability of microcomputers in the 38B5 group, refer

to the section on group expansion.

MITSUBISHI MICROCOMPUTERS

38B5 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

FEATURES

• Basic machine-language instructions ....................................... 71

• The minimum instruction execution time .......................... 0.48 µs

(at 4.19 MHz oscillation frequency)

• Memory size

ROM ............................................. 24K to 60K bytes

RAM ............................................ 512 to 2048 bytes

• Programmable input/output ports ............................................. 55

• High-breakdown-voltage output ports....................................... 36

• Software pull-up resistors ...... (Ports P5, P61 to P65, P7, P84 to P87, P9)

• Interrupts .................................................. 21 sources, 16 vectors

• Timers ........................................................... 8-bit ! 6, 16-bit ! 1

• Serial I/O1 (Clock-synchronized) .................................... 8-bit ! 1

...................... (max. 256-byte automatic transfer function)

• Serial I/O2 (UART or Clock-synchronized) ..................... 8-bit ! 1

Fig. 1 Pin Configuration of M38B57MC-XXXFP

Package type : 80P6N-A

80-pin plastic-molded QFP

PIN CONFIGURATION (TOP VIEW)

P65/SSTB1/AN11

P64/INT4/SBUSY1/AN10

M38B57MC-XXXFP

P63/AN9

P62/SRDY1/AN8

VEE

P76/AN6

P77/AN7

VREF

AVSS

P50/SIN1

P51/SOUT1

P52/SCLK11

P53/SCLK12

P54/RxD

P55/TxD

P56/SCLK21

P57/SRDY2/SCLK22

P86/RTP1/FLD38

P83/FLD35

P82/FLD34

P81/FLD33

P80/FLD32

P37/FLD31

P36/FLD30

P35/FLD29

P34/FLD28

P33/FLD27

P32/FLD26

P31/FLD25

P30/FLD24

P85/RTP0/FLD37

P84/FLD36

• PWM .............................................................................14-bit ! 1

8-bit ! 1 (also functions as timer 6)

• A-D converter .............................................. 10-bit ! 12 channels

• Fluorescent display function ........................ Total 40 control pins

• Interrupt interval determination function ..................................... 1

• Watchdog timer ............................................................. 20-bit ! 1

• Buzzer output ............................................................................. 1

• 2 Clock generating circuit

Main clock (XIN–XOUT) ......................... Internal feedback resistor

Sub-clock (XCIN–XCOUT) ......... Without internal feedback resistor

(connect to external ceramic resonator or quartz-crystal oscillator)

• Power source voltage

In high-speed mode ................................................... 4.0 to 5.5 V

(at 4.19 MHz oscillation frequency and high-speed selected)

In middle-speed mode ............................................... 2.7 to 5.5 V

(at 4.19 MHz oscillation frequency and middle-speed selected)

In low-speed mode .................................................... 2.7 to 5.5 V

(at 32 kHz oscillation frequency and low-speed selected)

• Power dissipation

In high-speed mode .......................................................... 35 mW

(at 4.19 MHz oscillation frequency)

In low-speed mode ............................................................ 60 µW

(at 32 kHz oscillation frequency, at 3 V power source voltage)

• Operating temperature range ................................... –20 to 85 °C

APPLICATION

Musical instruments, VCR, household appliances, etc.

PRELIMINAR

Notice:

This

is not

a final

specification.

Some

parametric

limits

are

subject

to change.

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