ML63326

· Rich instruction set 439 instructions
   - Transfer, rotate, increment, decrement, arithmetic operations, comparison, logic operations, mask operations, bit operations, ROM table reference, external memory transfer, stack operations, flag operations, branch, conditional branch, call/return, control.
· Rich selection of addressing modes
   - Indirect addressing of four data memory types, with current bank register, extra bank register, HL register and XY register.
   - Data memory bank internal direct addressing mode.
· Processing speed
· Program memory space 24K words Basic instruction length is 16 bits / 1 word
· Data memory space 1536 nibbles
· External data memory space 64kbyte ( expandable )
· Stack level
   - Call stack level : 16 levels
   - Register stack level : 16 levels
· I/O ports
   - Input ports: Selectable as input with pull-up resistance/ input with pull-down resistor / high-impedance input
   - Output ports: Selectable as P-channel open drain output / N-channel open drain output / CMOS output / high-impedance output
   - Input-output ports: Selectable as input with pull-up resistance / input with pull-down resistance / highimpedance
input Selectable as P-channel open drain output / N-channel open drain output / CMOS output / high-impedance output
   - Can be interfaced with external peripherals that use a different power supply than this device uses.
   - Number of ports:
     - Input ports : 1 port ´ 4 bits
     - Output port : 4 ports ´ 4 its
     - Input-output port : 5 ports ´ 4 bits and 1 port ´ 2 bits
· Voice synthesis
   - Algorithm : 4-bit ADPCM / Oki non-linear 8-bit PCM / 8-bit PCM Voice synthesis data memory:
      - Internal ROM : 1 Mbit mask ROM (128k bytes)
      - External ROM : 4 Mbit ROM (512k bytes max.)
      - Sampling frequencies (at clock frequency 4.096MHz) 4.0kHz, 5.3kHz, 6.4kHz, 8.0kHz, 10.7kHz, 12.8kHz, 16.0kHz
      - 12-bit D/A converter
      - Low-pass filter
· Melody output function
   - Two systems (one is in voice synthesis portion, the other is in microcontoroller portion) MD, MDB output ports are selected from two systems Melody output in voice synthesis portion can put out to AOUT/AOUTB output ports

The ML63326 is a low power 4-bit microcontroller which incorporates the OKI original CPU core nX-4/250 and provides a minimum instruction execution time of 1ms (@2MHz).

ML63326 contains 24K-word program memory, 1536-nibble data memory, 4-bit input port, four 4-bit output ports, five 4-bit and 2-bit input-output ports, shift register, LCD driver for up to 1024 segments, and voice synthesis, including 1 megabit mask ROM for speech data, a 12-bit D/A converter and low-pass filter internally. Speech ROM size can be expanded externally with further 4 megabits. The ML63326 is suitable for applications such as games, toys, clocks etc. which use an LCD display and voice synthesis.