COP8SA-DM National Semiconductor, COP8SA-DM Datasheet - Page 224

• Manufacturer Part Number: COP8SA-DM
• Description: MODULE DEBUGGING FOR COP8SA
• Manufacturer: National Semiconductor

Specifications of COP8SA-DM

• Module/board Type: Debugger Module
• For Use With/related Products: Cop 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *COP8SA-DM

The COP8 family meets the key requirements of cordless phone applications by providing
cost-effective and versatile solutions. The COP8SAx7 device supports key functions of
the cordless phone's two-piece set (a portable handset unit and a base station). The set
performs standard telephone functions such as network signaling, tone dialing (DTMF),
security, last number redial, alerting, and full duplex voice communication. The base
station connects to the telephone network and provides an RF linkage to the portable
handset using one of the 10 FCC-defined channels in the 46/49 MHz cordless telephone
bands. Figures 4-18 and 4-19 show the COP8SAB7 used in a typical cordless phone
application.
The COP87SAx7 features suited for this application include:
4-32
• Low operating voltage (2.7V to 5.5V)
• Low current drain
• HALT mode (typically less than 4 A)
• 6-bit programmable timer
• Efficient instruction set (efficient table look-up instruction)
DUPLEXER
COP8SAx7 APPLICATION IDEAS
RF AMP
RF AMP
COIL
3.58
MHz
CONTROL
TXPWR
MIXER
LOCAL
OSC
Figure 4-18 Handset Block Diagram
RXPWR
CONTROL
TRANSMITTER
LPF
MICROCONTROLLER
DETECTOR
40 Hz
BUFFER
IF AMP
DATA
AND
COP8SAB7
RX DATA
TX
DATA
TXMUTE
LM386
AMP
MICROPHONE
RXMUTE
DRIVER
BATT LOW
CHARGE
DETECT
DETECT
MATRIX
KEY
SPEAKER
BUZZER
TALK/BATT
LOW LED
+
–