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SM8230A Datasheet(PDF) 2 Page - NEC

Part # SM8230A
Description  Tone Dialer with Built-in Piezo Driver
Download  8 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

SM8230A Datasheet(HTML) 2 Page - NEC

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SM8230A
SEIKO NPC CORPORATION —2
BLOCK DIAGRAM
PIN DESCRIPTION
Number
Name
I/O
Description
1
SD
I
Serial data input
2
SCL
I
Serial data transfer clock input.
(For valid transfer, OE must stay LOW for 16 clock cycles.)
3OE
I
DTMF output enable/serial data transfer select input.
Serial data transfer is selected when LOW.
4
VSS
Ground
5
CLK
I
System clock input. The clock can be set to one of four frequencies (480kHz,
960kHz, 1.92MHz, 3.84MHz).
6
BZL
O
DTMF low-frequency group analog output
7
BZH
O
DTMF high-frequency group analog output
8
VDD
Supply voltage
CLK
OE
BZL
VSS
SCL
VDD
SD
BZH
LATCH
SELECTOR
Programmable
Counter
High Group
ROM
D/A
Converter
Output
Control
Programmable
Counter
Low Group
ROM
D/A
Converter
Output
Control


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