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PCD3330-1T 데이터시트 PDF




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부품번호 PCD3330-1T 기능
기능 Multistandard repertory dialler/ringer with EEPROM
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PCD3330-1T 데이터시트, 핀배열, 회로
INTEGRATED CIRCUITS
DATA SHEET
PCD3330-1
Multistandard repertory
dialler/ringer with EEPROM
Product specification
Supersedes data of September 1992
File under Integrated circuits, IC03
1997 Jan 15




PCD3330-1T pdf, 반도체, 판매, 대치품
Philips Semiconductors
Multistandard repertory dialler/ringer with
EEPROM
Product specification
PCD3330-1
2 GENERAL DESCRIPTION
The PCD3330-1 is a mixed-mode multistandard repertory
dialler/ringer IC fabricated in a low threshold voltage
CMOS technology.
The (maximum 13) repertory numbers, redial and various
country specifications are stored in EEPROM so that
memory retention is guaranteed for 10 years without using
a battery back-up.
National telecommunications specifications can be fulfilled
by changing a few bytes in EEPROM which contain the
different telephone timing and dialling procedures.
The two on-chip tone generators are used for Dual Tone
Multi-Frequency (DTMF) dialling, and for generating a
melody during ringing, which is activated when a correct
incoming ringer frequency is detected.
As an output transducer for the ringer, a loudspeaker
(ringer out via tone output) or a PXE (ringer out via the
special ringer output which generates square wave ringer
tones with a peak-to-peak voltage of VDD to VSS) can be
used.
The operating supply voltage is 1.8 V (2.5 V in EEPROM
erase/write and DTMF and ringer mode) to 6.0 V with a low
current consumption in all operating modes: standby,
conversation, dialling, programming and ringer.
3 ORDERING INFORMATION
TYPE
NUMBER
PCD3330-1P
PCD3330-1T
NAME
DIP28
SO28
PACKAGE
DESCRIPTION
plastic dual in-line package; 28 leads (600 mil)
plastic small outline package; 28 leads; body width 7.5 mm
VERSION
SOT117-1
SOT136-1
1997 Jan 15
4

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PCD3330-1T 전자부품, 판매, 대치품
Philips Semiconductors
Multistandard repertory dialler/ringer with
EEPROM
Product specification
PCD3330-1
It pulses a calibrated FLASH or register recall pulse
(if selected) when the keyboard input FLASH is pressed.
5.1.11 VDD AND VSS
VDD and VSS are the supply terminals.
5.1.12 TONE, DTMF OR RINGER TONE OUTPUT
In DTMF dialling mode the dual tones which are provided
at the output TONE are filtered by an on-chip switched
capacitor filter, followed by an active RC low-pass filter.
Therefore, the total harmonic distortion of the DTMF tones
fulfils the CEPT recommendations. An on-chip reference
voltage provides output tone levels independent of supply
voltages. The impedance is 100 typically.
In ringer mode this TONE output can be used for
generating the ringer output tones. Whether this TONE
output or the special RTO (ringer tone) output is used is
selected via EEPROM.
5.1.13 PD/DTMF, PULSE/TONE MODE SELECTION
To select the dialling mode, this input PD/DTMF must be
connected to VDD or VSS.
PD/DTMF = HIGH (VDD) = DTMF mode.
PD/DTMF = LOW (VSS) = pulse mode.
The PCD3330-1 accept the information also during
manual dialling. Switching the input to pin PD/DTMF
changes the dialling mode after finishing the digit in
progress.
microphone mute which is controlled by the M-key.
After off-hook this output is HIGH and will toggle by every
press off the M-key.
5.1.15 EARTH, a/b LINE TO EARTH CONNECTION
The EARTH output drives an external switching transistor.
which connects the a- or b-line to earth.
It pulses a calibrated EARTH pulse (if selected) when the
keyboard input FLASH is pressed.
5.2 Keyboard
The PCD3330-1 is programmed to work with various
keyboards which can be connected to the sense column
inputs COL1 to COL6 and the scanning row outputs
ROW1 to ROW6. In this specification four examples are
given:
Figure 2. The simplest keyboard. All basic functions are
available but only 2-key abbreviated dialling
(MEM + digit) is possible.
Figure 3. As Fig.2 but with 3 extra 1-key abbreviated
dialling keys.
Figure 4. As Fig.2 but the 10 repertory numbers can be
reached via M0 to M9 with 1-key abbreviated dialling.
Figure 5. The most complex keyboard. A second
possibility for column 4 exists. This column can be
selected via EEPROM.
Keyboard entries are valid 20 ms (debounce time) after
the leading edge of a keyboard entry.
5.1.14 RVOL1 AND RVOL2/LSE, RINGER VOLUME
OUTPUTS
The RVOL1 and RVOL2 outputs can be used to control the
ringer output volume in four steps. The volume can be
changed via keyboard during ringing or conversation
mode (off-hook). The selected output level is stored in
EEPROM.
During on-hook dialling the RVOL2 output becomes the
LSE output for switching the listening-in amplifier.
When the on-hook dialling option is not selected and the
microphone mute option is active output LSE change to a
1997 Jan 15
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