Semiconductor
ML63293 Preliminary Ver.1.1 Feb.10,1999
·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
Register stack level : 16 levels
: 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
Output ports
: 4bits ( 1port ´ 4bits )
: 16bits ( 4ports ´ 4bits )
Input-output ports : 24bits ( 6ports ´ 4bits )
·Melody output function
Melody sound frequency
: 529 to 2979Hz
: 63 varieties
Tone length
Tempo
: 15 varieties
Melody data
Buzzer driver signal output
: Stored in program memory
: 4kHz
·LCD driver
Number of segments
Duty
: 2176 segments max. ( 68seg. ´ 32com. )
: 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
Frame frequency
Contrast
: Selectable as 1/5 or 1/6 ( internal Voltage regulator )
: 64 Hz
: 8 levels
Display modes
: Selectable as all-ON mode, all-OFF mode, power down mode,
and normal display mode
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