ml7020mb Oki Semiconductor, ml7020mb Datasheet - Page 5

• Manufacturer Part Number: ml7020mb
• Description: 1200 Bps Modem For Remote Control Systems
• Manufacturer: Oki Semiconductor

1 Semiconductor
Pin No.
21
22
23
24
25
26
27
28
29
30
31
32
CLKOUT
Symbol
DETB
RD
D0
D1
D2
D3
XD
SP
A1
X2
X1
I/O
IO The data input/output pin D0 for the processor interface.
IO The data input/output pin D1 for the processor interface.
IO The data input/output pin D2 for the processor interface.
IO The data input/output pin D3 for the processor interface.
O
O
O
O
O
I
I
I
The address input pin A1 for the processor interface.
The 3.579545 MHz oscillator circuit output pin.
The pins for connecting a 3.579545 MHz crystal.
feedback resistor are internally connected to these pins.
external clock, connect the input to the X1 pin via a 1000 pF capacitor and leave
the pin X2 open.
The modem transmit data input pin.
The “1” level corresponds to the mark data and the “0” level corresponds to the
space data.
The modem receive data output pin. The mark and space data are the same as
for XD. A mark is output when no carrier is detected.
The pin for outputting the carrier detect signal of the modem or the call progress
tone detector output.
The detection result corresponding to the respective operating mode is output
from this pin. A “0” indicates detection and a “1” indicates non-detection.
The DTMF reception detection output pin.
A “0” indicates detection and a “1” indicates non-detection.
Description
The capacitors and the
When inputting an
FEDL7020-02
ML7020
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