SNC15040
One Channel Speech Controller
5.7 PWM Output
An PWM circuit is built-in SNC15040. The maximum resolution of PWM is 8 bits.
Two huge output stage circuits are designed in SNC15040. With this advanced
circuit, the chip is capable of driving speaker directly without external transistors.
BUO1
BUO2
PWM Output
5.8 Watch Dog Timer
SNC15040 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
P23 can be modulated with 38.5KHz square wave before sent out to P23 pin.
The IR signal can be achieved by this modulated signal.
6. ABSOLUTE MAXIMUM RATING
Items
Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
Symbol
VDD-V
VIN
TOP
TSTG
Min
-0.3
VSS-0.3
0
Max
6.0
VDD+0.3
55.0
Unit.
V
V
oC
oC
-55.0
125.0
!
6
Ver: 1.5
October 30, 2008
SONIX [ SONIX TECHNOLOGY COMPANY ]
