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Pad Description
Pad No.
Pad Name
I/O
Internal
Connection
Description
1~3
KEY10~KEY12
I
Pull-high
Trigger key, low active. Key features such as
debounce time, pull-high resistance and repeat
are all by mask option.
4
VDD
Positive power supply
5
AUD
O
PMOS
Open Drain
Voice output for driving an external transistor
6
OSC2
O
Oscillator output pin
7
OSC1
I
Oscillator input pin
8
FLAG1
O
NMOS
Open Drain
3HzB/6HzB flash output, busy output,
end-pulse or voice output indication (by mask
option). Open drain, active low output.
9
VSS
Negative power supply, ground
10
FLAG2
O
NMOS
Open Drain
3Hz/6Hz flash output or busy output (by mask
option). Open drain, active low output.
11~19
KEY1~KEY9
I
Pull-high
Trigger key, active low. Key features such as
debounce time, pull-high resistance and repeat
are all by mask option.
Absolute Maximum Ratings
Supply Voltage ................................ 0.3V to 6V
Storage Temperature ............... 50 C to 125 C
Input Voltage ............... V
SS
0.3V to V
DD
+0.3V
Operating Temperature ............. 20 C to 70 C
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maxi-
mum Ratings
may cause substantial damage to the device. Functional operation of this de-
vice at other conditions beyond those listed in the specification is not implied and prolonged
exposure to extreme conditions may affect device reliability.
HT817D0
4
March 15, 2000
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