CMOS 4-bit Single Chip Microcomputer

Description

The CXP402 is a CMOS 4-bit single chip micro-

computer which consists of 4-bit CPU, ROM, RAM,

8-bit timer, 8-bit timer/counter, 18-bit time-base timer,

LCD controller/driver, digital signal processor circuit

for CD player, 1-bit DAC and the like.

Features

• Instruction cycle 1.89µs for 16.93MHz oscillation

• ROM capacity

6144

× 8 bits

• RAM capacity

400

× 4 bits

(Including stack and display area)

• LCD controller/driver (Enables to direct drive)

• 8-bit timer, 8-bit timer/event counter and 18-bit

time-base timer are incorporated; they are

independently controllable.

• Arithmetic and logical operations between the entire

RAM area, I/O area and the accumulator by means

of the memory mapped I/O.

• Entire ROM area can be referred by the table look-

up instruction.

Digital Signal Processor (DSP) Block

• Playback mode supporting CAV (Constant Angular

Velocity)

• Frame jitter free

• Allows relative rotational velocity readout

• Supports spindle external control

• Wide capture range playback mode

• Spindle rotational velocity following method

• 16K RAM

• EFM data demodulation

• Enhanced EFM frame sync signal protection

• SEC strategy-based error correction

• Subcode demodulation and Sub Q data error

detection

• Digital spindle servo

• 16-bit traverse counter

• Asymmetry correction circuit

• Servo auto sequencer

• Digital audio interface output

• Digital peak meter

Digital Filter, DAC and Analog Low-Pass Filter Blocks

• DBB (digital bass boost) function

• Digital de-emphasis

• Digital attenuation

• Zero detection function

• 8Fs oversampling digital filter

• S/N: 100dB or more

(master clock: 384Fs, typ.)

Logical value: 109dB

• THD + N: 0.007% or less

(master clock: 384Fs, typ.)

• Rejection band attenuation: –60dB or more

• 112-pin plastic LQFP

• Piggyback package (CXP401Z) available

Structure

Silicon gate CMOS IC

– 1 –

E98924-PS

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any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the

operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.

CXP402

112 pin LQFP (Plastic)

For the availability of this product, please contact the sales office.