Semiconductor

ML63293

Preliminary Ver.1.1

Feb.10,1999

2 of 5

· Program memory space

64K words

Basic instruction length is 16 bits / 1 word

· Data memory space

3K nibbles

· External data memory space

64K bytes ( expandable by using an I/O port )

· 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

resistance / 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 / high-impedance input

Selectable as P-channel open drain output / N-channel open drain

output / CMOS output / high-impedance output

Can be interfaced to external devices having different power supplies.

Number of ports:

Input ports

: 4bits

( 1port

× 4bits )

Output ports

: 16bits ( 4ports

× 4bits )

Input-output ports : 24bits ( 6ports

× 4bits )

· Melody output function

Melody sound frequency

: 529 to 2979Hz

Tone length

: 63 varieties

Tempo

: 15 varieties

Melody data

: Stored in program memory

Buzzer driver signal output

: 4kHz

· LCD driver

Number of segments

: 2176 segments max. ( 68seg.

× 32com. )

Duty

: Selectable as 1/2,1/4,1/6,1/8,1/10,1/12,1/14.1/16,1/18,1/20,

1/22,1/24,1/26,1/28,1/30, 1/32

Bias

: Selectable as 1/5 or 1/6 ( internal Voltage regulator )

Frame frequency

: 64 Hz

Contrast

: 8 levels

Display modes

: Selectable as all-ON mode, all-OFF mode, power down mode,

and normal display mode