MSM6546L Datasheet | OKI Electric

DESCRIPTION MSM6546/6546L is a 4-bit, low-power microcontroller manufactured in a CMOS silicon gate process. The microcontroller can be initialized and operated at the low supply voltage of 0.9 V. This device contains a crystal oscillator circuit, voltage converter circuits, a time base counter, a ROM, a RAM, a stack RAM, I/O ports, interrupt function ponents, a serial I/O port, a buzzer output circuit, an up/down counter, and LCD drivers. .. This IC can be driven by one battery and is well suited to products that need to be operated with low power consumption. FEATURES - The IC can be initialized and operated even at a low voltage of 0.9 V. - Low power consumption - ROM : 4096 words - 17 bits - RAM : 256 words - 4 bits - I/O port Input/output port : 7 ports - 4 bits Input port : 1 port - 4 bits - Interrupt functions (real-time interrupt, external interrupt, and serial interrupt) - Serial I/O port : 8-bit sync munication - Buzzer output circuit - 4-bit decimal up/down counter - 54 LCD drivers (up to 200 segments can be displayed) - 75 instructions - Minimum instruction execution time : 61 ms - Operation under single 1.5 V power supply (MSM6546) A mask option allows the 3 V power supply to be used (MSM6546L). - Built-in 32.768 k Hz crystal oscillator circuit - Package: 100-pin plastic QFP (QFP100-P-1420-0.65-BK) : (Product name : MSM6546-xx GS-BK, MSM6546L-xx GS-BK) Chip - - indicates a code number. 1/16 .. CCLK BU/D 4-Bit BCD COUNTER CCNT PGCONH PGCONL PORT7 BLOCK DIAGRAM P7.3 P7.2 P7.1 P7.0 SCND0 SERIAL I/O PAGE S-bus FLAG ALU WORK ADRS SBFFL SBFFH ACC D-BUS ¡ Semiconductor P6.3 P6.2 P6.1 P6.0 SIN SOUT SCKL SCND1 RAM (256 - 4 bits) A-bus PORT6 EIF INTERRUPT CONTROL EIRT IRQRT FIEX IRQEX PNEX IRQSIO...