SC9257 Ver la hoja de datos (PDF) - Silan Microelectronics
Número de pieza
componentes Descripción
Fabricante
SC9257 Datasheet PDF : 28 Pages
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Silan
Semiconductors
SC9257
PIN DESCRIPTION
Pin No. Symbol
Pin name
Description
1
XT
Connects 3.6MHz, 4.5MHz, 7.2MHz or
Crystal oscillator
10.8MHz crystal oscillator to supply
pins
2
XT
reference frequency and internal clock
Circuit diagram
VDD
XT
XT
3
PERIOD Period signal input Serial I/O ports. These pins transfer VDD
data to and from the controller to set
4
CLOCK Clock signal input divisions and dividing modes, and to
Schmitt
Schmitt input
CLOCK,PERIOD
control the general-purpose counter
input
Serial data
5
DATA
and general-purpose I/O ports.
input/output
DATA
6
OT-1
N channel open drain port pins, for
7
OT-2 General-purpose such uses as control signal output.
8
OT-3 output ports
These pins are set to the OFF state
N-channel open drain
9
OT-4
when power is turned on.
CMOS structure allows free use of
VDD
10 I/O-5/CLK
these ports for input or output. Ports
General-purpose
are set for input when the power is
I/O ports
11
I/O-6
turned on , I/O-5 can be switched for
use as a system clock output pin.
13
AMIN
These pin input FM and AM band local
VDD
Programmable oscillator signals by capacitor
counter input
coupling. FMIN and AMIN operate at
14
FMIN
low amplitude.
General-purpose I/O port input/output
pins. Can be switched for use as input
I/O-
pins to measure general-purpose
16
9/IFIN2 General-purpose counter frequencies. The frequency
VDD
I/O ports/General- measurement function has such uses
purpose counter as measuring intermediate
frequency
frequencies (IF).
measurement
These pins feature built-in amps. Data
I/O- input
17
8/IFIN1
are input by capacitor coupling. FMIN
and AMIN operate at low amplitude.
(note) Pins are set for input when
power is turned on.
(To be continued)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
REV: 1.0 2001.10.18
5
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