ASM7306C

ASM7306C/8406C DATA SHEET ASM7306C/8406C ASM7306C/8406C - VERY LOW-COST VOICE SYNTHESIZER WITH 4-BIT MICROPROCESSOR 1.0 General Description The ASM7306C/8406C is very low cost voice synthesizer with 4-bit microprocessor. It has various features including 4-bit ALU, ROM, RAM, I/O ports, timers, clock generator, watchdog timer(WDT), voice synthesizer, etc . It consists of 22 instructions in the device. With CMOS technology and halt function can minimize power dissipation . Its architecture is similar cycle, to RISC, with two stages of instruction pipeline. It allows all instructions to be in a executed single except for program branches and data table read instructions (which need two instruction cycles). 1.1 Feature ‹ Single power supply can operate from 2.4V through 5.5V ‹ Internal Program ROM: 4K x 10-bit ‹ 1 sets of 18-bit DPR can access up to 256K x 10 bits data memory space ‹ Data Registers: 64 x 4-bit data RAM (00-1Fh plus 40h-5Fh) Unbanked special function registers (SFR) range: 20h-3Fh ‹ I/O Ports: PRA: 4-bit I/O Port A (2Bh) PRB: 2-bit Output Port B (2Dh) ‹ On-chip clock generator: Resistive Clock Drive(RM) ‹ Timer: 1 Timer0: a 9-bit auto-reload timer/counter ‹ Stack: 2-level subroutine nesting ‹ HALT and Release from HALT function to reduce power consumption ‹ Watch Dog Timer (WDT) ‹ Instruction: 1-cycle instruction except for table read and program branches which are 2-cycles ‹ Number of instruction: 22 ‹ The Voice function can be implemented by micropr...