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SC9318-033 View Datasheet(PDF) - Silan Microelectronics

Part Name
Description
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SC9318-033
Silan
Silan Microelectronics Silan
SC9318-033 Datasheet PDF : 28 Pages
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SC9318-033
(Continued)
Pin No. Symbol
27~30
K0~K3
31~36
T0~T5
37~40
P1-0
~
P1-3
41~44
P2-0
P2-1/
ADIN1
P2-2/
ADIN2
P2-3/
DC-REF
45~46
P3-0
P3-1/
BUZR
47
MUTE
Description
Key input ports;
4 bit input ports for key matrix input. Combined in a matrix with key return timing
outputs the LCD segment pins, data from a maximum of 4X8=32 keys can be input
and pins are pulled up. On the key setting output pin, data from 4X6=24 keys can be
input and pins are pulled down. The WAIT mode is released when high level is
applied to key input ports set to pull-down.
Key return timing output port;
These ports output the timing signal for key matrix. To form the key matrix, load
resistance has been built-in the N-channel side. When the key matrix combined with
push-key that does not need a key matrix diode.
I/O port 1;
The input and output of these 4 bit I/O ports can be programmed in 1 bit units. By
altering the input to I/O ports set to input, the CLOCK STOP and WAIT modes can be
released, and the MUTE bit of the MUTE pin can be set to “1”.
I/O port 2;
/AD analog voltage input;
/AD analog voltage input;
/Reference voltage input;
4 bit I/O ports.
Input and output may be programmed in 1 bit units. Pins P2-1 through P2-2 can also
be used for analog input to the built-in 6 bit, 2-channel A/D converter.
Conversion time of the built-in A/D converter using the successive comparison
method is 280µs. The necessary pin can be programmed to A/D analog input in 1 bit
units, and P2-3 can be set to the reference voltage input. Internal power supply (VDD)
or constant voltage (VEE) can be used as the reference voltage. In addition, constant
voltage (VEE) can be input to the A/D analog input so battery voltage, etc., can be
easily detected. The reference voltage input, for which a built-in operational amp is
used, has high impedance.
The A/D converter, and their control are all executed by program.
I/O port 3;
/Buzzer output;
2 bits I/O ports, whose input/output can be programmed in 1 bit units.
The P3-1 pin also functions as the output for the built-in buzzer circuit. The buzzer
sound can be output in 254 different tones between 18.75kHz and 147Hz, and at a
duty of 50%.
The buzzer output, and all associated controls can be programmed.
Muting output port;
1 bit output port. Normally, this port is used for muting control signal output. This pin
can set the internal MUTE bit to “1”according to a change in the input of I/O port 1.
MUTE bit output logic can be changed; PLL phase difference can also be output
using this pin.
(To be continued)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2 2003.05.20
Page 6 of 29
 

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