APT320 Description：
    APT320 is a 20 Sec Easy Use Speech IC .It Support PWM or DAC voice output with high quality speech , There are 20 second Voice Length under 6 KHz sampling and 4 bit hardware compression.
    Its internal built-in a oscillator for system clock without an external resistor. Maximum 63 voice groups. One Group contain several steps(voice section ); Maximum 700 steps for all the Groups.
    Each Step can be define Trigger Mode, Output Status, Voice Section, Mute length, I/O Type & Simple Programming Function. User can select 8bit / 5bit / 4bit data compression.
    Support three mode trigger IC (Stand Alone, Serial Trigger Mode, CPU Command Mode ). Easy use development system is for function selection and voice combination . PC download the ROM code by the USB Port .

APT320 Functions :
MAX voice file : 700 
MAX Trigger Groups : 63 
Power On Trigger Group :1 
MAX Step : 700 
Signal step mute length : 0.64 s ( 6k sample rate ) 
Operating Voltage range: 2.4V ~ 3.6V 
Total Voice Duration : 20” (120K Samples)
I/O pin : 4 
Voice output : PWM or DAC 
Sequential Key : TG1 -> 32 Groups. TG2 -> 29 Groups. TG3,TG4-> 1 Group 
Debounce time : 50 us or 10 ms 
On/Off function : only for all TG PIN 
Sequential Key for Volume control function. 
Step can change Trigger I/O Type, Trigger Mode & Output Status. 
Hardware Trigger Group Repeat function.

APT320 Simple Programming Function :
(a) Write data to working register.
(b) Working Register Increasing. 
(c) Step Jump by Working Register / Volume Status. 

APT320 Three Mode Trigger IC :
- Key Stand-alone Trigger Mode : 
A. Edge/Level 
B. Hold/Unhold
C. 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.

APT320 Pad Location:


APT320 PIN Descriptions:


APT320 TG2 Low Reset: