SNC12040
One Channel Speech Controller
5.7 Push-Pull Output
An 8-level volume control Push-Pull Direct Drive circuit is built-in SNC12040. The
maximum resolution of Push-Pull is 7 bits. Two huge output stage circuits are
designed in SNC12040. With this advanced circuit, the chip is capable of driving
speaker directly without external transistors.
BUO1
BUO2
Push-Pull Output
5.8 Watch Dog Timer
SNC12040 built an internal WDT (Watch Dog Timer). This Watchdog timer would
issue resets signal to this chip if it is not cleared before reaching terminal count (1sec).
The watchdog timer is enabled at reset and cannot be disabled.
5.9 IR Function
P33 can be modulated with 38.5KHz square wave before sent out to P33 pin.
The IR signal can be achieved by this modulated signal.
6. ABSOLUTE MAXIMUM RATING
Items
Symbol
VDD-V
VIN
Min
-0.3
VSS-0.3
0
Max
6.0
VDD+0.3
55.0
Unit.
V
Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
V
TOP
TSTG
oC
oC
-55.0
125.0
6
Ver: 1.4
March 17, 2005
SONIX [ SONIX TECHNOLOGY COMPANY ]
