Standard CMOS process aP89341/170/085
FEATURES
· Standard CMOS process.
· Embedded 8M/4M/2M EPROM.
· 341/170/85 sec Voice Length at 6KHz sampling and 4-bit ADPCM
compression.
· Maximum 254 voice groups.
· Combination of voice blocks to extend playback duration.
· 7680 table entries are available for voice block combinations.
· User selectable PCM or ADPCM data compression
· Three triggering modes are available (controlled by M1 and M0
input pins):
- Key Trigger Mode (M1=0, M0=0) - S1 ~ S8 to trigger up to 32 voice
groups; SBT to trigger up to 254 voice groups sequentially.
- CPU Parallel Trigger Mode (M1=0, M0=1) – S[8:1] services as
8-bits address to trigger up to 254 voice groups with SBT goes HIGH
to strobe the address bits.
- CPU Serial Command Mode (M1=1, M0=0) – user commands are clocked
serially into the chip which enable user to fully control the
operation of the chip.
· Voice Group Trigger Options: Edge / Level; Hold / Un-hold;
Retrigger / Non-retrigger.
· Whole Chip Options: Ramp / No-ramp; Output Options; Long / Short
debounce time.
· Optional 16ms or 65us (@ 8KHz sampling rate) selectable debounce
time
· RST pin set to HIGH to stop the playback at once
· Three user programmable outputs for STOP pulse, BUSY signal and
flashing LED.
· Built-in oscillator to control sampling frequency with an
external resistor
· 2.2V – 3.6V single power supply and < 5uA low stand-by current
· PWM Vout1 and Vout2 drive speaker directly
· D/A COUT pin drives speaker through an external BJT
· Development System support voice compilation.
DESCRIPTION
aP89341/170/085 series high performance Voice OTP is fabricated
with Standard CMOS process with embedded 8M/4M/2M bits EPROM. It
can store up to 341/170/85 sec voice message with 4-bit ADPCM
compression at 6KHz sampling rate. 8-bit PCM is also available as
user selectable option. Three trigger modes, simple Key trigger
mode, Parallel CPU trigger mode and CPU serial command mode,
facilitate different user interface. User selectable triggering and
output signal options provide maximum flexibility to various
applications. Built-in resistor controlled oscillator, 8-bit
current mode D/A output and PWM direct speaker driving output
minimize the number of external components. PC controlled
programmer and developing software are available.
PIN NAMES
| PIN (24-pin) | Playback Mode | OTP Program Mode | Description |
| 1 | S7 | IO6 | Trigger pin (I/O pin with internal pull-down) |
| 2 | S8 | IO7 | Trigger pin (I/O pin with internal pull-down) |
| 3 | VSS | VSS | Ground |
| 4 | VOUT1 | -- | PWM output to drive speaker directly |
| 5 | VOUT2 | -- | PWM output to drive speaker directly |
| 6 | VDD | VDD | Supply voltage |
| 7 | AVDD | AVDD | Analog supply voltage |
| 8 | VPP | VPP | Supply voltage for OTP programming |
| 9 | OSC | ACLK | Oscillator input |
| 10 | COUT | -- | D/A current output |
| 11 | AVSS | AVSS | Analog ground |
| 12 | OUT3 | -- | Programmable output (I/O pin) |
| 13 | OUT2 | SIO | Programmable output (I/O pin) |
| 14 | OUT1 | OEB | Programmable output (I/O pin) |
| 15 | RST | DCLK | Reset pin (input pin with internal pull-down) |
| 16 | SBT | PGM | Trigger pin (I/O pin with internal pull-down) |
| 17 | M1 | M1 | Mode select pin 1 (input with internal pull-down) |
| 18 | M0 | M0 | Mode select pin 0 (input with internal pull-down) |
| 19 ~ 24 | S1~S6 | IO0~IO5 | Trigger input (I/O pin with internal pull-down) |
VOICE SECTION COMBINATIONS
Voice files created by the PC base developing system are stored in
the built-in EPROM of the aP89341/170/085 chip as a number of fixed
length Voice Blocks. Voice Blocks are then selected and grouped
into Voice Groups for playback. Up to 254 Voice Groups are allowed.
A Voice Block Table is used to store the information of
combinations of Voice Blocks and then group them together to form
Voice Group.
| Chip aP89341 aP89170 aP89085 |
| Memory size 8M bits 4M bits 2M bits |
| Max no. of Voice Block 2016 992 480 |
| Max. no. of Voice Group 254 254 254 |
| No of Voice Table entries 7680 7680 7680 |
| Voice Length (@ 6KHz 4-bit ADPCM) 341 sec 170 sec 85 sec |
