DTMFDECODER-RD Silicon Laboratories Inc, DTMFDECODER-RD Datasheet - Page 23

• Manufacturer Part Number: DTMFDECODER-RD
• Description: KIT REF DESIGN DTMF DECODER
• Manufacturer: Silicon Laboratories Inc

Specifications of DTMFDECODER-RD

• Mfg Application Notes: DTMF Decoder Ref Design AppNote
• Main Purpose: Telecom, DTMF Decoder
• Embedded: No
• Utilized Ic / Part: C8051F300
• Primary Attributes: 8kHz Sampling Rate ADC
• Secondary Attributes: 16 Goertzel Filters
• Processor To Be Evaluated: C8051F300
• Interface Type: RS-232
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 336-1283

1.8.
C8051F300/1/2/3/4/5 devices include an on-chip voltage comparator that is enabled/disabled and config-
ured via user software. All Port I/O pins may be configurated as comparator inputs. Two comparator out-
puts may be routed to a Port pin if desired: a latched output and/or an unlatched (asynchronous) output.
Comparator response time is programmable, allowing the user to select between high-speed and low-
power modes. Positive and negative hysteresis is also configurable.
Comparator interrupts may be generated on rising, falling, or both edges. When in IDLE mode, these inter-
rupts may be used as a “wake-up” source. The comparator may also be configured as a reset source.
P0.0
P0.2
P0.4
P0.6
P0.1
P0.3
P0.5
P0.7
Comparator
Figure 1.11. Comparator Block Diagram
CP0 +
CP0 -
+
-
Rev. 2.9
GND
VDD
Decision
Reset
Tree
C8051F300/1/2/3/4/5
(SYNCHRONIZER)
D
CLR
SET
Q
Q
D
SET
CLR
Q
Q
Crossbar
Interrupt
Handler
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