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TC9457F Fiches technique(PDF) 1 Page - Toshiba Semiconductor |
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TC9457F Fiches technique(HTML) 1 Page - Toshiba Semiconductor |
1 / 15 page TC9457F 2002-10-21 1 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 oscillators (16.9344 MHz, 4.5 MHz, and 75 kHz), making interfacing with a CD easy. The CD digital servo incorporates various functions and circuits required for CD systems. These include sync separation protection and interpolation, EFM demodulation, error correction, digital equalizer for servoing, and a servo control circuit. Furthermore, it contains a 1-bit DA converter, so that when combined with the digital servo head amp TA2109F, it allows you to create a maintenance-free, extremely simple CD player system. Features · CMOS−technology DTS microcontroller LSI incorporating a CD digital servo and LCD/LED driver · Operating supply voltage: When CD is operating, VDD = 4.5 to 5.5 V (5.0 V typ.) When CD is turned off, VDD = 2.7 to 5.5 V (CPU operating) · Current consumption: When CD is operating, IDD = 55 mA (typ.) When CD is turned off, IDD = 2 mA (typ.) (using 4.5 MHz crystal; CPU operating) When CD is turned off, IDD = 0.1 mA (using 75 kHz crystal; CPU operating) · Operating temperature range: Ta = −40 to 85 °C · Firmware · 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 Hz interval · Interrupt: 1 external, 3 internal (CD subing synchronous, serial interface, 8 bits timer) Weight: 1.6 g (typ.) |
Numéro de pièce similaire - TC9457F |
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Description similaire - TC9457F |
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