W536A031 Datasheet, PDF (3/16 Pages) Winbond – VOICE/MELODY/LCD CONTROLLER

W536A031
2. 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): 32K × 20 (ROM Bank0, 1, 2)
− Data RAM (W-RAM): 1.4K × 4 bit
(RAM Bank 0 is 896 nibbles from 0:000 ~0:37F and 0:380~0:3FF are mapped to special
register.
RAM Bank F is 512 nibbles from F: 200 ~F: 3FF either data RAM or dedicated to script kernel)
− LCD RAM (L-RAM): 256× 4 bit × 2 pages (RAM Bank1, 2 from 200~2FF)
• 16 input/output pads
− Ports for input only: 8 pads (RC, RD port; RD1~3 can share as serial bus for external memory
W55XXX interface @W536A031)
− Ports for Input/output: 8 pads (RA and RB port; RB port is available)
• 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, Meloy)
− 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
− 64 seg × 16 com
− 1/16 or 1/8 duty, 1/5 or 1/4 bias, internal pump circuit option by special register
− COM 8~ 15 and SEG40~63 can be shared as general input/output by special register
− Either uC ROM or voice ROM used as LCD picture
Publication Release Date: May 20, 2003
-3-
Revision A2