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4556 Datasheet(PDF) 1 Page - Renesas Technology Corp |
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4556 Datasheet(HTML) 1 Page - Renesas Technology Corp |
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1 / 145 page  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 registers), 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. FEATURES qMinimum instruction execution time Mask ROM version .............................................................. 0.5 µs (at 6 MHz oscillation frequency, in high-speed through-mode) One Time PROM version ................................................... 0.68 µs (at 4.4 MHz oscillation frequency, in high-speed through-mode) qSupply voltage Mask ROM version ...................................................... 1.8 to 5.5 V One Time PROM version ............................................. 1.8 to 3.6 V (It depends on operation source clock, oscillation frequency and op- eration mode) Part number ROM type Mask ROM Mask ROM One Time PROM Mask ROM Mask ROM One Time PROM Package 42P2R-A 42P2R-A 42P2R-A 42P2R-A 42P2R-A 42P2R-A RAM size (✕ 4 bits) 288 words 288 words 288 words 288 words 288 words 288 words ROM (PROM) size (✕ 10 bits) 4096 words 8192 words 8192 words 4096 words 8192 words 8192 words qTimers 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) qInterrupt ........................................................................ 4 sources qKey-on wakeup function pins ..................................................... 9 q LCD control circuit Segment output ........................................................................ 23 Common output .......................................................................... 4 qVoltage drop detection circuit (only H version) Reset occurrence .................................... Typ. 1.8 V (Ta = 25 °C) Reset release .......................................... Typ. 1.9 V (Ta = 25 °C) qWatchdog timer qClock generating circuit Built-in clock (on-chip oscillator) Main clock (ceramic resonator/RC oscillation) Sub-clock (quartz-crystal oscillation) qLED drive directly enabled (port D) APPLICATION Remote control transmitter Note: Shipped in blank. M34556M4-XXXFP M34556M8-XXXFP M34556G8FP (Note) M34556M4H-XXXFP M34556M8H-XXXFP M34556G8HFP (Note) 4556 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER REJ03B0025-0302 Rev.3.02 2006.12.22 Rev.3.02 Dec 22, 2006 page 1 of 142 REJ03B0025-0302 |
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