W91082N Datasheet, PDF (1/5 Pages) Winbond – TONE GENERATOR WITH uC SERIAL INTERFACE

Preliminary W91082N
TONE GENERATOR WITH µC SERIAL INTERFACE
GENERAL DESCRIPTION
The W91082N is Si-gate CMOS IC that provides DTMF signals. It can be programmed by a µC to
generate 16 dual tones and 8 single tones from the DTMF pin. The W91082N provides a serial mode
interface for various applications such as cordless, KTS, PBX and Caller ID system.
FEATURES
• Operating voltage: 2.0V−5.5V
• Generate 16 dual tones and 8 single tones
• Serial mode interface with µC
• Uses 3.579545 MHz crystal or ceramic resonator
• Packaged in 8-pin plastic DIP
PIN CONFIGURATION
CE
1
8
XT1 2 7
XT1 3 6
V_SS
45
V_DD
DTMF
DATA
CLK
PIN DESCRIPTION
SYMBOL PIN NO. I/O
FUNCTION
CE
1
I
Chip enable signal, low active.
XT1, XT1
3, 2
I, O A built-in inverter provides oscillation with an inexpensive
3.579545 MHz crystal or ceramic resonater. The crystal
frequency deviation is ±0.02%.
DATA
6
I
Data input pin for serial receiving.
CLK
5
I
Clock input pin for serial receiving.
DTMF
7
O DTMF signal output pin.
VDD, VSS
8, 4
I
Power input pins.
Publication Release Date: February 1998
-1-
Revision A1