l         max voice file : 700

l         max trigger groups : 63

l         power on trigger group :1

l         max step : 700 

l         signal step mute length : 0.64 s ( 6k sample rate )

l         operating voltagerange: 2.4v ~3.6v

l         total voice duration :20”(120k samples)

l         i/opin :4

l         voice output: pwmor dac

l         sequentialkey : tg1->32groups.

tg2 -> 29groups.

tg3,tg4-> 1 group

l         debounce time: 50 us or 10 ms

l         on/off function : only for all tg pin

l         sequential key for volume control function.

l         step can change trigger i/o type, trigger mode & output status.

l         hardware trigger group repeat function.

l         simple programming function :

n         (a) write data to working register.

n         (b) working register increasing.

n         (c) step jump by working register / volume status.

l         three mode trigger ic:

- key stand-alone trigger mode :

1. edge/level
2. hold/unhold
3. retrigger/irretrigger

-       serial trigger mode :

combinations of tg1 and tg2 to trigger maximum 63 voice group.

-       cpu command mode :

user command through tg1,tg2,tg3 & tg4 with serial cpu interface to control the multi-playback function.