Page 1
Silan
Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
1
TWO IN ONE SCROLLING MOUSE
CONTROLLER
DESCRIPTION
The SC84520 Scrolling Mouse Controller id specially designed to
control serial mouse or PS/2 mouse device. This single chip can
interface three key-switched and 4 X-Y photo-couples plus Z-axis
directly plus Z-axis directly to RS-232C or 8042 controller.
There are four types Z-axis inputs used to implement scrolling
mouse functionality.
FEATURES
*Using 50kΩ±1% resistor for RC oscillation
*Compatible with legacy PS/2 mouse
*Compatible with Microsoft serial scrolling mouse
*Compatible with Microsoft PS/2 scrolling mouse
*Serial or PS/2 port auto-detect
*100 bytes PnP ID code could be filled by code layer
*Built-in noise immunity circuit
*The sampling rate of motion detector is up to 65 kHz
*Built-in three zener diodes : one in V
DD
to VSS,twoinRTStoV
DD
*CMOS push-pull RXD output
*Built-in current comparator for photo-couples input
*Built-in three step dynamic input impedance
*Three key-switches and four photo-coupled inputs
*RTS debouncing circuit include
*Photo couple test mode include
*Low power dissipation
*Six types Z direction input:
1. Photo couples input (Z/1)
2. Key-switches input
3. Voltage-sensing input
4. Mechanical input(Z/1)
5. Photo couples input (Z/4)
6. Mechanical input (Z/2)
DIP-16
*Package type:
SC84510AP: 16DIP, Photo coupled
input(Z/1)
SC84510BP: 16DIP, Key-switches input
SC84510CP: 16DIP, Voltage-sensing
Input
SC84510DP: 16DIP, Mechanical input
(Z/1)
SC84510EP: 16DIP, Photo couples input
(Z/4)
SC84510FP: 16DIP, Mechanical input
(Z/2)
APPLICATIONS
*Serial PnP scrolling mouse
*PS/2 scrolling mouse
*Combo PnP scrolling mouse
Page 2
Silan
Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
2
PIN CONFIGURATIONS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SC84520A/B/C/D/E/F
VDD
OSC OUT
Z1
Z2
CLK/RTS
DATA/RXD
OPT
VSS
OSCR
Y2
Y1
X2
X1
L
M
R
BLOCK DIAGRAM
THREE TYPESSELECTOR
COMPARATOR
VOLTAGE
SENSOR
KEY-SWITCH
DETECTOR
Z-AXIS COUNTER
COUNTER MULTIPLEXER
DATA
I/O
DETECTOR MOTION
DEBOUNCE
COMPARATOR
COMMAND
STATUS
TIMING
CONTROLLER
SYSTEM CLOCK GENERATOR
RC OSCILLATION
3
4
7
12
13
14
15
11
10
9
16
2
6 5
Z1
Z2
OPT
X1
X2
Y1
Y2
L
M
R
OSCR
OSC OUT
DATA/RXD CLK/RTS
Page 3
Silan
Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
3
ABSOLUTE MAXIMUM RATINGS
(Tamb=25°C, unless otherwise specified)
Characteristic Symbol Value Unit
Supply Voltage V
SS
-0.3 ~ +7.5 V
Temperature Under Bias 0 ~ 70
°C
Storage Temperature range T
OPR
-65 ~ +150
°C
PowerDissipation P
D
500 mW
DC ELECTRICAL CHARACTERISTICS
(Tamb=25~70°C)
Parameter Symbol Min Typ Max Unit
Operating Voltage V
DD
-- -- 6.5 V
Operating Current (VDD=5.4V, RTS=VDD, 32.768kHz, No Load) Iop -- -- 0.6 mA
Operating Current (VDD=6.2V, RTS=VDD, 32.768kHz, No Load) Iop 3 -- -- mA
Operating Current (VDD=5.4V, RTS=VDD, 3.58MHz, No Load) Iop -- -- 1.6 mA
Operating Current (VDD=6.2V, RTS=VDD, 3.58MHz, No Load) Iop 4 -- -- mA
RTS Operating Current (VDD=5.6V, RTS=11V) I
RTS
-- -- 0.6 mA
RTS Operating Current (VDD=5.6V, RTS=11.8V) I
RTS
3----mA
RXD High Output Current (Vrh=Vrts-2.6V) Irh 2.0 -- -- mA
RXD Low Output Current (Vrl=Vss+2.6V) Irl -- -- -2.0 mA
X1,X2,Y1,Y2 Low Input Voltage Vpl -- -- 0.7 V
X1,X2,Y1,Y2 High Input Voltage Vph 1.3 -- -- V
X1,X2,Y1,Y2 Input Current (Pull Low Resistor, Vds=1.0V) Ipi 57 -- 104
µA
RTS High Input Voltage Vth 9.6 -- -- V
RTS Low Input Voltage Vtl -- -- 6.8 V
Low Input Voltage, Other Pins Vail -- -- 1.5 V
High Input Voltage, Other Pins Vaih 3.5 -- -- V
L,M,R,OPT Input Current (Pull Low Resistor, Vds=5.6V) Imi 18.6 -- 56
µA
Rs,Osc-In,L,M,R,X1,X2,Y2,Y2,Opt
Input Leakage Current (Vin=0V)
Iil 0 -- 1.0
µA
RS, OSC-IN Input Leakage Current (Vin=5.6V) Iih -1.0 -- 0
µA
NOTE: *All voltages in above table are compared with VSS.
*All parameters in above table are tested under V
DD
=5.6V
Page 4
Silan
Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
4
AC ELECTRICAL CHARACTERISTICS
(Tamb=25~70°C)
PS/2 mouse mode:
Parameter Symbol Min Typ Max Unit
Oscillating Frequency Fosc 37-3% 37 37+3% kHz
Key Debounce Tkd -- 12 -- ms
Rising Edge Crossed Width Tr 13.5 -- --
µs
Falling Edge Crossed Width Tf 13.5 -- --
µs
Mouse CLK Active Time Tmca -- 40.5 --
µs
Mouse CLK Inactive Time Tmci -- 40.5 --
µs
Time that Mouse Sample DATA from CLK rising Edge Tmdc -- 13.5 --
µs
System CLK Active Time Tsca -- 40.5 --
µs
System CLK Inactive Time Tsci -- 40.5 --
µs
Time from DATA Transition to Falling Edge of CLK Tsdc -- 13.5 --
µs
Time from rising Edge of CLK to DATA Transition Tscd -- 27 --
µs
Time to mouse Inhibit after the 11th CLK to
ensure mouse does not start another Transmission
Tpi 0 -- 50
µs
Serial mouse mode:
Parameter Symbol Min Typ Max Unit
Oscillating Frequency Fosc 32.4-3% 32.4 32.4+3% kHz
Key Debounce Tkd -- 13 -- ms
Rising Edge Crossed Width Tr 15.4 -- --
µs
Falling Edge Crossed Width Tf 15.4 -- --
µs
Transmission Time Tmx -- 33.33 -- ms
Start bit time Ts -- 833.3 --
µs
Data bit time Td -- 833.3 --
µs
Stop bit time Tp -- 833.3 --
µs
Mode code delay Time Trd 11 -- 14 ms
Page 5
Silan
Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
5
PIN DESCRIPTION
Pin Name I/O Description
OPT I/O
INPUT: 200kΩ pull low to VSS.
When OPT is connected to VDD, SC84520 will enter test mode. In test mode, L will
be the output of X1, while M will be the output of X2. Toggling R key can change
these output to be Y1, Y2 or Z1, Z2 respectively.
OUTPUT: 2kHz Z-axis LED-driving source with A/D/E/F version.
“1” = VDD, “0” = floating
High duty is about 60µs.
OSC OUT O The RC oscillation clock output. Or 3mA sink current output for X, Y photo emitters.
OSCR I
Connect 50kΩ±1% precise resistor for oscillation.
CLK/RTS I/O
Connect to 8024 auxiliary port CLK line in PS/2 mode or connect directly to RS232C
RTS pin in serial mode. Auto-detect the operating port by this pin.
DATA/RXD I/O
Connect to 8024 auxiliary port DATA line in PS/2 mode or connect directly to
RS232C RXD pin in serial mode.
V
SS
-- Negative power input.
RI
M I/O
L I/O
Three key-switches inputs. 200kΩ resistor pull low.
In Z-axis key mode, M key toggling can change the scrolling speed from low to high.
X1
X2
Y1
Y2
I
Three step dynamic input impedance. If OSC OUT is not connected to LEDs, the
dynamic input impedance will be off.
Use current comparator to measure photo-couples “ON”, or “OFF”.
Z1
Z2
I
Z-axis input.
Photo mode: Three steps dynamic input impedance. Current comparator input.
Key mode: 200kΩ resistor pull low. 7 levels increased by “M” key.
Voltage mode: 200kΩ resistor pull low. 7 level voltage comparator.
Mechanical mode: 13.2 kΩ resistor pull low, Current comparator input.
VSS Negative power.
V
DD
Power line.
Page 6
Silan
Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
6
X1, X2, Y1, Y2 INPUT IMPEDANCE
0 1.0 2.0 3.0 4.0 5.0
5.0
UNIT:KΩ
MAX.
TYP.
MIN.
7.0
8.0
9.0
6.0
2.0
3.0
4.0
1.0
10.0
15.0
16.0
12.0
13.0
14.0
11.0
INPUT VOLTAGE
FUNCTION DESCRIPTIONS
1.SERIAL SCROLLING MOUSE
In Microsoft mode, the transmission cycle consists of four bytes in one report. Each byte contains one start bit, 7
data bits and two stop bits, The first byte contains “L”, “R” key status and four bits of the two most significant bits
in horizontal counter and vertical counter. The second byte represents the value accumulated by horizontal
counter, the third byte is the data of the vertical counter, The last byte contains “M” key status and Z-axis value.
The vertical data is transmitted in 2’s complement.
Output byte arrange:
Bit No.
……
6543210
1st Byte
……
1LRV7’V6’H7H6
2nd Byte
……
0 H5H4H3H2H1H0
3rd Byte
……
0 V5’ V4’ V3’ V2’ V1’ V0’
4th Byte
……
0 0 MZ3Z2Z1Z0
Plug & Play ID code
When RTS input from low to high, SC84520 will send a string ID code. Customer can specify the contains of the
code area and the total length below 100 bytes by changing the code layer.
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Silan
Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
7
Field Name Length Field Data Description
Other ID <17 4D, 5A, 40, 00,.00, 00 ID for legacy
Begin ID 1 08 Begin PnP ID
PnP Revision 2 01, 24 Version 1.00
EISA ID 3 25, 2D, 23 EMC
Product ID 4 10, 10, 10, 11 0001
Serial Number 9 3C None provided
Class ID <34 3C,2D, 2F, 35, 33, 25 Mouse Class
Driver ID <42 3C, 30, 2E, 30, 10, 26, 10, 21 PnP0F0A
User Name <42
3C, 25, 2D, 23, 00, 33, 23, 32, 2F,
2C, 2C, 29, 2E, 27, 00, 33, 25, 32,
29, 21, 2C, 00, 2D, 2F, 35, 33, 25
EMC SCROLLING
SERIAL MOUSE
Check sum 2 21, 15 2 bytes check sum
End PnP 1 09 End PnP ID
2.LEGACY PS/2 MOUSE OPERATING:
A) Operating Mode
There are four operating modes in PS/2 mouse:
a. Reset Mode:
In this mode a self-test is initiated during power-on or by a Reset command. After reset signal, PS/2 mouse
will:
(a) Send completion code AA & ID code 00.
(b) Set default: sampling rate: 100 reports/s
Non-autospeed
Stream mode
2 dot/count
disable
b. Stream Mode:
The maximum rate of transfer is the programmed sample rate.
Data report is transmitted if
(a) switch is pressed
(b) movement has been detect
c. Remote Mode:
Data is transmitted only in response to a Read Data command.
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Silan
Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
8
d. Wrap Mode:
Any byte of data sent by the system. Except hex EC(Reset wrap mode) or hex FF (Reset) is returned by
SC84520.
B) PS/2 Mouse Data Report:
a. In stream mode: A data report is sent at the end of a sample interval.
b. In remote mode: A data report is sent in response to Read Data command.
c. Data report format:
Byte Bit Description
1 0 Left button status; 1 = pressed
1 Right button status; 1 = pressed
2 Middle button status; 1 = pressed
3 Reserve
4 X data sign; 1 = negative
5 Y data sign; 1 = negative
6 X data overflow; 1 = overflow
7 Y data overflow; 1 = overflow
2 0-7 X data ( D0 – D7)
3 0-7 Y data ( D0 – D7)
C) PS/2 Mouse Data Transmission:
a. SC84520 generates the clocking signal when sending data to and receiving data from the system.
b. The system requests SC84520 receive system data output by forcing the DATA line to an inactive level and
allowingCLKlinetogotoanactivelevel.
c. Data transmission frame:
Bit Function
1 Start bit (always 0)
2-9 Data bits (D0 – D7)
10 Parity bit (odd parity)
11 Stop bit (always 1)
d. Data Output (data from SC84520 to system):
If CLK is low (inhibit status), data is no transmission.
If CLK is high and DATA is low (request –to-send), data is update. Data is received from the system and no
transmission are started by SC84520 until CLK and DATA both high. If CLK and DATA both are high, the
transmission is ready. DATA is valid prior to the falling edge of CLK and beyond the rising edge of CLK.
During transmission, SC84520 check for line contention by checking for an inactive level on CLK at intervals
not to exceed 100µs, Contention occurs when the system lowers CLK to inhibit SC84520 output after
Page 9
Silan
Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
9
SC84520 has started a transmission. If this occurs before the rising edge of the tenth clock, SC84520 internal
store its data in its buffer and returns DATA and CLK to an active level. If the contention does not occur by the
tenth clock, the transmission is complete.
e. Data Input (from system to SC84520):
The system first check if SC84520 is transmitting data. If SC84520 is transmitting, the system can override the
output forcing CLK to an inactive level prior to the tenth clock. If SC84520 transmission is beyond the tenth
clock, the system receives the data. If SC84520 is not transmitting or if the system choose to override the
output. The system force CLK to an inactive level for a period of not less than 100µs while preparing for output.
When the system is ready to output start bit (0), it allows CLK go to active level. If request-to-send is detected,
SC84520 clocks 11 bits, Following the tenth clock SC84520 checks for an active level on the DATA line, and if
found, force DATA low, and clock once more. If occurs framing error, SC84520 continue to clock until DATA is
high, then clocks the line control bit and request a resend. When the system sends out a command or data
transmission that requires a response, the system waits for SC84520 to response before sending its next
output.
D) PS/2 Mouse Error Handling:
a. A Resend command (FE) following receipt of an invalid input or any input with incorrect parity.
b. If two invalid input are received in succession, an error code of hex (FC) is send to the system.
c. The counter accumulators are cleared after receiving any command except “Resend”
d. SC84520 receives a Resend command (FE), it transmit its last packet of data.
e. In the stream mode “Resend” is received by SC84520 following a 3-byte data packet transmission to the
system. SC84520 resend the 3-byte data packet prior to clearing the counter.
f. A response is sent within 25ms if
a) The system requires a response
b) An error is detected in the transmission
g. If SC84520 is in the stream mode:
a) The system disables SC84520 before issuing any command requiring a response.
b) When a command requiring a response is issued by the system another command should not be issue
until either the response is received or 25ms has passed.
E) PS/2 Mouse Commands Description:
There are 16 valid commands that transmits between the system and SC84520. The “FA” code is always the first
response to any valid input received from the system other than a Set Wrap Mode or Resend command. The
following table list the commands:
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Silan
Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
10
Hex Code Command SC84520 echo code
FF Reset FA.AA.00
FE Resend XX.(XX.XX)
F6 Set Default FA
F5 Disable FA
F4 Enable FA
F3.XX Set Sampling Rate FA.FA
F2 Read Device Type FA,00
F0 Set Remote Mode FA
EE Set Wrap Mode FA
EC Reset Wrap Mode FA
EB Read Data FA.XX.XX.XX
EA Set Stream Mode FA
E9 Status Request FA.XX.XX.XX
E8.XX Set Resolution FA,FA
E7 Set Auto-speed FA
E6 Reset Auto-speed FA
The following describes valid commands:
a. Reset (FF)
SC84520 operation:
a) Completion the reset.
b) Transmitted FA, AA, 00 to the system.
c) Set Default:
Sampling rate: 100 reports/s
Non-autospeed
Stream mode
2 dots/count
disable
b. Resend (FE)
a) Any time SC84520 receives an invalid data. It returns a Resend command to the system.
b) When SC84520 receives a Resend command, it retransmits its last packet of data. If the last packet was a
Resend command, it transmits the packet just prior to the Resend command.
c) In stream mode, if a Resend command is received by SC84520 immediately following a 3-byte data packet
transmission to the system.
c. Set Default (F6)
The command reinitializes all conditions to the power-on defaults.
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Silan
Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
11
d. Disable (F5)
This command is used in the stream mode to stop transmissions from SC84520.
e. Enable (F4)
Begins transmissions, if in stream mode.
f. Set Sampling Rate (F3, XX)
In the stream mode, this command sets the sampling rate to the value indicated by byte hex XX. Shown in
following:
Second byte XX Sample Rate
0A 10/sec
14 20/sec
28 40/sec
3C 60/sec
50 80/sec
64 100/sec
C9 200/sec
g. Read Device Type (F2)
SC84520 always echoes “FA,00” following this command.
h. Set Remote Mode (F0)
Data value are reported only in response to a Read Data command.
i. Set Wrap Mode (EE)
Wrap mode remains until Reset (FF) or Reset Wrap Mode (EC) is received.
j. Reset Wrap Mode (EC)
SC84520 returns to the previous mode of operation after receiving this command.
k. Read Data (EB)
This command is executed in either remote or stream mode. The data is transmitted even if there has been no
movement since the last report or the button status is unchanged. Following a Read Data command the
registers are cleared after a data transmission.
h. Set Stream Mode (EA)
This command sets SC84520 in stream mode.
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Silan
Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
12
l. Status Request (E9)
When this command is issued by the system, SC84520 respond with a 3-byte status report as follows:
Byte Bit Description
1 0 1 = Right button pressed
1 1 = Middle button pressed
2 1 = Left button pressed
3 Reserved
4 0 = Normal speed, 1 = Autospeed
5 0 = Disabled, 1 = Enable
6 0 = Stream mode, 1 = Remote mode
7 Reserved
2 0-7 Current resolution setting (D0 – D7)
3 0-7 Current sampling rate (D0 – D7)
m. Set Resolution (E8, XX)
SC84520 provides four resolutions selected by the second byte of this command as follows:
Second Byte XX Resolution
00 8 dots/count
01 4 dots/count
02 2 dots/count
03 1 dot/count
n. Set Autospeed (E7)
At the end of a sample interval in the stream mode, The current X and Y data values are converted new
values. The sign bits are not involved in this conversion. The conversion is only in stream mode. The
relationship between the input and output count follows:
Input Output
00
11
21
33
46
59
N( ≥6)
2.0*N
o. Reset Autospeed (E6)
This command restore normal speed.
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Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
13
3.MICROSOFT OPS/2 SCROLLING MOUSE MODE:
A) Entering procedure: Except in WRAP mode, While SC84520 received the following consecutive
command.
a. F3 C8 ---- set sampling rate 200/sec
b. F3 64 ---- set sampling rate 100/sec
c. F3 50 ---- set sampling rate 80/sec
B) Operating:
a. All of the command in legacy mode still be valid.
b. The ID code of read device type command (F2) will changed from “00” to be “03”.
c. Data report will be four bytes format:
Byte Bit Description
1 0 Left button status; 1 = pressed
1 Right button status; 1 = pressed
2 Middle button status; 1 = pressed
3 Reserve
4 X data sign; 1 = negative
5 Y data sign; 1 = negative
6 X data overflow; 1 = overflow
7 Y data overflow; 1 = overflow
2 0 - 7 X data (D0 – D7)
3 0 - 7 Y data (D0 – D7)
4 0 - 7 Z data (D0 – D7)
C) Exiting Microsoft scrolling mode:
Therearetwowaystoexit:
a. Power off.
b. Reset command (FF).
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Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
14
4.Z-AXIS INPUT FUNTION:
a. Photo couples input: Z-axis counter accumulates the Z1, Z2 phase changed by movement.
b. Key-switches input: Pressing Z1, Z2 will start to fill the Z-axis counter with the value beginning at one. Toggling
“M” key can increase the value any time by one. The limit value is ±7.
c. The relationship between the value and the transmission rate as follows:
Value Rate per second
12.7
26.4
39.2
4 12.8
515
618
720
d. Voltage-sensing mode: There are 7 voltage levels in Z1, Z2 input. The transmission table is the same as key-
switch mode. The relationship between the value of Z-axis counter and the voltage as follows:
Value Voltage
0
1V ↓
1 1.0V – 1.6V
2 1.6V – 2.2V
3 2.2V - 2.8V
4 2.8V – 3.4V
5 3.4V – 4.0V
6 4.0V – 4.6V
7
4.6V ↑
Under VDD = 5V condition
e. Mechanical mode: The same as optical wheel mode.
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Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
15
TIMING DIAGRAM
(A) PS/2 mouse mode:
Tr Tf
X1(Y1)
X2(Y2)
CLK
DATA
CLK
DATA
Inhibit
Start
Bit
Bit0-Bit7
Parity
Bit
Line
Control
Bit
Stop
Bit
Start
Bit
Bit0-Bit7
Parity
Bit
Stop
Bit
Tscl Tsca
TscdTsdc
Tpi
Tmdc
Tmca
Tmci
1st
CLK
2rd
CLK
9th
CLK
10th
CLK
11th
CLK
1st
CLK
2nd
CLK
10th
CLK
11th
CLK
(A) Photo-couples pulse width
(C) Sending Data
(B) Receiving Data
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Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
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(B) Serial mouse mode:
Key in/release
Mouse RXD
RXD
RXD LINE
Data Bit no.
RTS
RXD
"4D" code
Bit no.
Tmx Tmx
1st 2rd 3nd 4nd
Ts
0Td1Td2Td3Td4Td5Td6
Td
Tp Tp
01
Trd
4D 5A 40 00 00 00 0908 PnP ID code
TpTp
4532Ts 0 1
(A) RXD output
(B) Byte structure
(C) Bits structure
(D) PnP ID code echo timing
Page 17
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Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
17
APPLICATIONS CIRCUITS
15
14
13
12
4
3
11
10
9
1
5
6
7
2
16
8
VDD
CLK/RTS
DATA/RXD
OPT
OSC OUT
VSS
OSCR L
M
R
Z1
Z2
X1
X2
Y1
Y2
SC84520A/E
1
2
3
4
5
6
1
2
3
4
5
6
7
8
9
DATA
GND
+5V
CLK
RXD
TXD
DTR
SG
DSR
RTS
5.1V
50kΩ*
1kΩ
4 chips digital PT
2 chips digital PT
1kΩ
10µf
0.1µf
* 50kΩ must be precise
resistor under ±1%.
15
14
13
12
4
3
11
10
9
1
5
6
7
2
16
8
VDD
CLK/RTS
DATA/RXD
OPT
OSC OUT
VSS
OSCR L
M
R
Z1
Z2
X1
X2
Y1
Y2
SC84520B
1
2
3
4
5
6
1
2
3
4
5
6
7
8
9
DATA
GND
+5V
CLK
RXD
TXD
DTR
SG
DSR
RTS
5.1V
50kΩ*
1kΩ
4 chips digital PT
2 chips digital PT
10µf0.1µf
* 50kΩ must be precise
resistor under ±1%.
Page 18
Silan
Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
18
APPLICATIONS CIRCUITS
(continued)
15
14
13
12
4
3
11
10
9
1
5
6
7
2
16
8
VDD
CLK/RTS
DATA/RXD
OPT
OSC OUT
VSS
OSCR L
M
R
Z1
Z2
X1
X2
Y1
Y2
SC84520C
1
2
3
4
5
6
1
2
3
4
5
6
7
8
9
DATA
GND
+5V
CLK
RXD
TXD
DTR
SG
DSR
RTS
5.1V
50kΩ*
1kΩ
4 chips digital PT
2 chips digital PT
10µf0.1µf
* 50kΩ must be precise
resistor under ±1%.
15
14
13
12
4
3
11
10
9
1
5
6
7
2
16
8
VDD
CLK/RTS
DATA/RXD
OPT
OSC OUT
VSS
OSCR L
M
R
Z1
Z2
X1
X2
Y1
Y2
SC84520D/F
1
2
3
4
5
6
1
2
3
4
5
6
7
8
9
DATA
GND
+5V
CLK
RXD
TXD
DTR
SG
DSR
RTS
5.1V
50kΩ*
1kΩ
4 chips digital PT
2 chips digital PT
10µf0.1µf
A
B
COM**
* 50k Ω must be precise
resistor under ±1%.
** Mechanical wheel
Page 19
Silan
Semiconductors
SC84520
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
19
PACKAGE OUTLINE
DIP-16-300-2.54 UNIT:mm
6.40
2.54
3.51
5.083.30
7.62
0.25
15 degree
0.46
19.4
1.50
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