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Part Number: M34556M4

 

 

 

 

Description: The 4556 Group is a 4-bit single-chip microcomputer designed with CMOS technology. Its CPU is that of the 4500 series u...


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M34556M4 General Description


The 4556 Group is a 4-bit single-chip microcomputer designed with CMOS technology. Its CPU is that of the 4500 series using a simple, high-speed instruction set. The computer is equipped with two 8-bit timers (each timer has one or two reload register), a 16-bit timer for clock count, interrupts, and oscillation circuit switch function. The various microcomputers in the 4556 Group include variations of the built-in memory size as shown in the table below.

M34556M4 Maximum Ratings

Symbol Parameter Conditions Ratings Unit
VDD Supply voltage   0.3 to 6.5 V
VI Input voltage P0, P1, P2, D0D5, RESET, INT, XIN, XCIN   0.3 to VDD+0.3 V
VI Input voltage CNTR   0.3 to VDD+0.3 V
VO Output voltage P0, P1, P2, D0D7, RESET, CNTR Output transistors in cut-off state 0.3 to VDD+0.3 V
VO Output voltage C, XOUT, XCOUT   0.3 to VDD+0.3 V
VO Output voltage SEG0SEG28, COM0COM3   0.3 to VDD+0.3 V
Pd Power dissipation Ta = 25 °C 300 mW
Topr Operating temperature range   20 to 85 °C
Tstg Storage temperature range   40 to 125 °C
Note: SEG11 to SEG16 pins are not equipped with the 4556 Group.

M34556M4 Features

Minimum instruction execution time .................................. 0.5 s (at 6 MHz oscillation frequency, in through-mode)
Supply voltage
    Mask ROM version ...................................................... 1.8 to 5.5 V
    One Time PROM version ............................................. 2.5 to 5.5 V (It depends on operation source clock, oscillation frequency and operation mode)
Timers
    Timer 1 ...................................... 8-bit timer with a reload register
    Timer 2 ................................. 8-bit timer with two reload registers
    Timer 3 .............................. 16-bit timer (fixed dividing frequency)
Interrupt ........................................................................ 4 sources
Key-on wakeup function pins ..................................................... 9
LCD control circuit
    Segment output ........................................................................ 23
    Common output .......................................................................... 4
Voltage drop detection circuit (only H version)
    Reset occurrence .................................... Typ. 1.8 V (Ta = 25 °C)
    Reset release .......................................... Typ. 1.9 V (Ta = 25 °C)
Watchdog timer
Clock generating circuit
    Built-in clock (built-in ring oscillator)
    Main clock (ceramic resonator/RC oscillation)
    Sub-clock (quartz-crystal oscillation)
LED drive directly enabled (port D)

M34556M4 Typical Application

Remote control transmitter

M34556M4 Connection Diagram

M34556M4  Connection Diagram

M34556M4 datasheet

M34116
PDF/DataSheet Download

  • Datasheet: M34116
  • File Size: 383108 KB
  • Manufacturer: STMICROELECTRONICS [STMicroelectronics]
  • Click here to Download

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