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SM8212 Datasheet(PDF) 3 Page - Nippon Precision Circuits Inc

Part # SM8212
Description  POCSAG Decoder For Multiframe Pagers
PDF  32 Pages
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Manufacturer  NPC [Nippon Precision Circuits Inc]
Direct Link  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc

SM8212 Datasheet(HTML) 3 Page - Nippon Precision Circuits Inc

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NIPPON PRECISION CIRCUITS-3
SM8212B
Pin number
Pin name
i/o
Description
1
BS1
o
RF control main output signal
2
BS2
o
RF DC-level adjustment signal
3
BS3
o
PLL setup signal
4
SIGNAL
i
NRZ signal input pin
5
XVSS
-
Crystal oscillator ground. Capacitor connected between XVSS and VDD
6
XT
i
Oscillator input pin
7
XTN
o
Oscillator output pin
8
VSS
-
Ground
9
CLKO
o
76.8 or 38.4 kHz clock output
10
RSTN
i
Hardware clear (reset)
11
AREA
o
Sync code detection output (HIGH for minimum 1 sec. on detection)
12
SCK
i
CPU-to-decoder data transfer sync clock
13
SDO
o
Status and received data output to CPU
14
SDI
i
Data input from CPU (including ID data)
15
ATTN
o
Interrupt detect signal output pin (Ready for data transmission when LOW)
16
VDD
-
Supply voltage
i = Input,
o = Output
SM8212B Paging Receiver Block Diagram
RF
Waveform
Recovery
POCSAG
Decoder
SP
Melody
IC
PLL Circuit
CPU Unit
ID
ROM
D/D Converter
LCD Driver
LCD
Supply Unit
SM8212
Alert
PIN DESCRIPTION



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