SC88E43S Просмотр технического описания (PDF) - Unspecified
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SC88E43S Datasheet PDF : 25 Pages
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Silan
Semiconductors
SC88E43
PIN DESCRIPTION
Pin
Symbol
No.
1
IN+
2
IN-
I/O
Input
Input
3
GS
Output
4
VRef
Output
5
CAP
--
6
TRIGin
Trigger Input
TRIGRC Open Drain
7
Output /
Schmitt Input
TRIGout
8
CMOS Output
9
MODE
CMOS Input
10
OSCI
Input
11
OSCO
12
Vss
13
IC
Output
--
--
14
PWDN Schmitt Input
Function
Non-inverting Input of the internal opamp.
Inverting Input of the internal opamp.
Gain Select of internal opamp. The opamp’s gain should be set
according to the nominal Vdd of the application using the information
in Figure 10.
Reference Voltage. Nominally VDD/2. It is used to bias the input
opamp.
Capacitor. A 0.1mF decoupling capacitor should be connected across
this pin and VSS.
Trigger Input. Schmitt trigger buffer input. Used for line reversal and
ring detection.
Trigger RC. Used to set the (RC) time interval from TRIGin going low
to TRIGout going high. An external resistor connected to VDD and
capacitor connected to VSS determine the duration of the (RC) time
interval.
Trigger Out. Schmitt trigger buffer output. Used to indicate detection of
line reversal and/or ringing.
3-wire interface: Mode Select. When low, selects FSK data interface
mode 0. When high, selects FSK data interface mode 1. See pin 16
(DCLK) description to understand how MODE affects the DCLK pin.
Oscillator Input. A 3.579545MHz crystal should be connected between
this pin and OSCO. It may also be driven directly from an external
clock source.
Oscillator Output. A 3.579545MHz crystal should be connected
between this pin and OSCI. When OSCI is driven by an external clock,
this pin should be left open.
Power Supply Ground.
Internal Connection. Must be connected to VSS for normal operation.
Power Down. Active high. When high, the device consumes minimal
power by disabling all functionality except TRIGin, TRIGRC and.
TRIGout Must be pulled low for device operation.
(To be continued)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
7
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