BU34675 Datasheet (Rohm) - Single-chip 4-bit microcontroller

BU34675, Single-chip 4-bit microcontroller

BU34675 571 Optical disc ICs FInput / output circuits BU34675 572 Optical disc ICs FElectrical characteristics (unless otherwise noted, Ta = 25_C and VDD = 5V) BU34675 573 Optical disc ICs FElectrical characteristics (unless otherwise noted, Ta = 25_C and VDD = 3V) BU34675 574 Optical d

Optical disc ICs Single-chip 4-bit microcontroller for CD-DA BU34675 The BU34675 is a compact 4-bit, single-chip microcontroller that includes all the I / O required for CD system control.

Circuits on the chip include a pulse width measurement counter (PWC), SIO, and an LCD controller / driver for a 28-segment display.

The LCD segments can all be switched in software to CMOS output, and the extensive I / O allows many functions with a low pin count.

FApplications Portable CD-DA, CD / radio / c

BU34675 Features

* 1) Low-voltage, high-speed operation (VDD = 2.3 to 5.5V at 4.4MHz). 2) Pulse width measurement counter on chip (for remote control reception). 3) SIO provided for communication with the DSP. 4) Seven-segment, four-common LCD controller / driver on chip. 5) All segments of the LCD controller / drive