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38B5

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 60...

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SeekIC No. : 004229426 Detail

38B5: Features: • Basic machine-language instructions ....................................... 71• The minimum instruction execution time .......................... 0.48 µs (at 4.19 MHz o...

38B5 Data Sheet

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Part Number:
38B5
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



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 ..........................................1024 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 5 6, 16-bit 5 1
• Serial I/O1 (Clock-synchronized) ................................... 8-bit 5 1
             ...................... (max. 256-byte automatic transfer function)
• Serial I/O2 (UART or Clock-synchronized) .................... 8-bit 5 1
• PWM ............................................................................ 14-bit 5 1
   8-bit 5 1 (also functions as timer 6)
• A-D converter .............................................. 10-bit 5 12 channels
• Fluorescent display function ......................... Total 40 control pins
• Interrupt interval determination function ..................................... 1
• Watchdog timer ............................................................ 20-bit 5 1
• Buzzer output ............................................................................. 1
• 2 Clock generating circuit
  Main clock (XINXOUT) .......................... Internal feedback resistor
  Sub-clock (XCINXCOUT) ..........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)


Pinout

Connection Diagram


Specifications

Symbol Parameter Conditions Ratings Unit
VCC Power source voltage All voltages are based on VSS.Output transistors
are cut off.		 0.3 to 7.0 V
VEE Pull-down power source voltage VCC 45 to VCC +0.3 V
VI Input voltage P47, P50P57, P61P65, P70P77, P84P87, P90, P91 0.3 to VCC +0.3 V
VI Input voltage P40P46, P60 0.3 to 13 V
VI Input voltage P00P07, P20P27, P80P83 VCC 45 to VCC +0.3 V
VI Input voltage RESET , XIN 0.3 to VCC +0.3 V
VI Input voltage XCIN 0.3 to VCC +0.3 V
VO Output voltage P00P07, P10P17, P20P27,P30P37, P80P83 VCC 45 to VCC +0.3 V
VO Output voltage P50P57, P61P65, P70P77,P84P87, P90, P91, XOUT,XCOUT 0.3 to VCC +0.3 V
VO Output voltage P40P46, P60 0.3 to 13 V
Pd Power dissipation Ta = 20 to 65°C 800 mW
Ta = 65 to 85 °C 800 12.5 5 (Ta 65) mW
Topr Operating temperature   20 to 85 °C
Tstg Storage temperature   40 to 125 °C



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 packaging. 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. Built-in pull-down resistors connected to high-breakdown voltage ports are available by specifying with the mask option in some products. For the details, refer to the section on the mask option of pull-down resistor.




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