GENERAL DESCRIPTION

The W536XXXK, a member of ViewTalkTM family, is a high-performance 4-bit micro-controller (uC) with built-in speech unit, melody unit and 40seg * 8 com LCD driver unit which includes internal regulator, pump circuit and dedicated one page LCD RAM. The 4-bit uC core contains dual clock source, 4-bit ALU, two 8-bit timers, one 14 bits divider, maximum 24 pads for input or output, 8 interrupt sources and 8-level nesting for subroutine/interrupt applications. Speech unit, integrated as a single chip with maximum 128 seconds (based on 6.4K sample rate with 5 bits MDPCM), is capable of expanding to 512 seconds speech addressed by external memory W55XXX with serial bus interface.

FEATURES

• Operating voltage: 2.4 volt ~ 5.5 volt

• Watch dog disabled/enabled by mask option

• Dual clock operating system

   − Main clock with Ring/Crystal (400 KHz to 4 MHz)

   − Sub-clock with 32.768 KHz RC/Crystal by mask option

• Memory

   − Program ROM (P-ROM): 16K × 20 (ROM Bank0)

   − Data RAM (W-RAM): 1K × 4 bit

      (RAM Bank 0 is 512 nibbles from 0: 000~0: 1FF and 0: 380~0:3FF are mapped to specia register. RAM Bank F is 512 nibbles from F: 200~F: 3FF either data RAM or dedicated to script kernel)

   − LCD RAM (L-RAM): 80× 4 bit (RAM Bank1 from 200~24F)

• Maximum 24 input/output pads

   − Ports for input only: 8 pads (RC, RD port; RD1~3 can share as serial bus for external memory W55XXX interface @W5360020/30K)

   − Ports for output only: 8 pads (RE & RF port; W536090K/120K available only)

   − Ports for Input/output: 8 pads (RA and RB port; RB port is available for W536060/090K/ 120K only)

• Power-down mode

   − Hold mode (except for 32KHz oscillator)

   − Stop mode (including 32KHz oscillator and release by RD or RC port)

• Eight types of interrupts

   − Five internal interrupts (Divider, Timer 0, Timer 1, Speech, Melody)

   − Three external interrupts (Port RC, RD, RA)

• One built-in 14-bit clock frequency divider circuit

• Two built-in 8-bit programmable countdown timers

   − Timer 0: one of two clock sources (FOSC/4 or FOSC/1024) can be selected

   − Timer 1: built-in auto-reload function includes internal timer, external event counter from RC.0

• Built-in 18/14-bit watchdog timer for system reset.

• Powerful instruction sets

• 8-level subroutine (including interrupt) nesting

• LCD driver unit capability

   − VLCD higher than (VDD -0.5V)

   − Built-in voltage regulator to V2 pad

   − 40 seg × 8 com

   − 1/8 or 1/4 duty, 1/4 or 1/3 bias, internal pump circuit option by special register

   − COM 4~ 7 and SEG16~39 can be shared as general input/output by special register

   − Either uC ROM or voice ROM used as LCD picture

• Speech function

   − Provided 640K / 1M/ 2M/ 3M/ 4M bits Voice ROM for W536020K/030K/060K/090K/120K based on 5 bits MDPCM algorithm

   − Voice ROM (V-ROM) available for uC data or LCD picture data.

   − Maximum 8*256 Label/Interrupt vector (voice section number) available

   − Provide two types of speech busy flag to either each GO or each trigger

   − Maximum up to 16M bits speech address capability interface with external memory W55XXX through serial bus.

• Melody function

   − Provide 1K notes (22bits/note) dedicated melody ROM

   − Provide two types of melody busy flag to uC either each note or each song

   − Provide 6 kinds of beat, 16 kinds of tempo, and pitch range from G3# to C7

   − Tremolo, triple frequency and 3 kinds of percussion available

   − Maximum 31 songs available

• Can mix speech with melody

• Multi-engine controller

• Direct driving speaker/buzzer or DAC output

• Chip On Board available