TC9457F Description
TC9457F TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC9457F Firmware Built In Digital Servo The TC9457F is a firmware incorporating CD digital servo system. In addition to an LCD/LED driver, 4-channel 6-bit AD converters, and 2-wire/3-wire serial interface, it has a buzzer function, interrupt function, and 8-bit timer/counter. The CPU allows selection of the operating clock from three types of crystal...
TC9457F Key Features
- Instruction execution time: 1.89/1.78/107 µs
- Crystal oscillator frequency: 16.9344 MHz/4.5 MHz/75 kHz
- AD converter: 6 bits, 4 channels
- LCD driver: 1/4 duty, 1/2 biased, maximum 72 segments
- LED driver: 4 digits × maximum 14 segments (shared with LCD driver in software)
- Timer/counter: 8 bits (timer clock selectable from INTR1, INTR2, instruction cycle, or 1 kHz)
- Serial interface: 3-wire/2-wire interface (data length: 4 or 8 bits)
- Buzzer: 0.625 to 3 kHz (8 types) ; 4 modes available-continuous, single, 10 Hz intermittent, and 10 Hz intermittent at 1
- Interrupt: 1 external, 3 internal (CD subing synchronous, serial interface, 8 bits timer)
- CD digital servo system