SC83053 dedicated keyboard encoder, specially designed compatible mach
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KEYBOARD ENCODER
SC83053 dedicated keyboard encoder, specially designed compatible machines. SC83053 control scan codes, three LEDs status, scan timing communications between keyboard easy implement high performance, cost keyboard with minimal external components.
SC83053
FEATURES
cost eliminate need external components. Phantom detects. oscillator (1.8432MHz Support scan code Support PS/2 keyboard. power CMOS device technology. Internal pull-up resistor. Tri-state outputs easy board application. Built-in ROM. Support WINDOWS
Chip Topography
APPLICATION
compatible machine keyboard. PS/2 model 30,50,60,80 compatible machine keyboard.
2000 keys.
Japanese keyboard. Korean keyboard. Brazilian keyboard. European keyboard.
104/107 keys with multi-media other special application keyboard encoder. WINDOWS registered trademarks Microsoft corperation.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
CONFIGURATION
OSCO DATA OSCI
SC83053
SC83053
ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
Characteristic
Supply Voltage Input Voltage Output Voltage Temperature under Bias Storage Temperature
Symbol
VOUT
Value
-0.5~+7 -0.3~+6 -0.3~+6 0~70 -65~150
Unit
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
ELECTRICAL CHARACTERISTICS
Parameter
Operating Voltage Operating Supply Current Input Leakage Input High Voltage Input Voltage Output Voltage Output Voltage LEDS
SC83053
Symbol
ICC1 VOL1 VOL2 IOL1=3.0mA IOL2=10mA FOSC=1.8432MHz VIN=VCC,
Test condition
Min.
Typ.
Max.
Unit
Internal Pull-high Resistance (port 6,9) RPH1 VPH1=0V Internal Pull-high Resistance RPH2 VPH2=0V VOL3 IOL3=5mA
DATA, Output Voltage DATA
ELECTRICAL CHARACTERISTICS
Parameter
Time from DATA transition falling edge Time from rising edge DATA transition Duration inactive Duration active Time auxiliary device inhibit after clock ensure auxiliary device does start another transmission Time from inactive active transition, used time when auxiliary device samples DATA System clock FCLK 1.8432
Symbol
Min.
Typ.
Max.
T4-5
Unit
Symbol
Function
Column output scan line, 3-state Column output scan line, 3-state continued)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
(Continued)
SC83053
Function
output scan line, 3-state Column output scan line, 3-state Column output scan line, 3-state Column output scan line, 3-state Column output scan line, 3-state Column output scan line, 3-state Column output scan line, 3-state Column output scan line, 3-state Column output scan line, 3-state Column output scan line, 3-state Column output scan line, 3-state Column output scan line, 3-state Column output scan line, 3-state Column output scan line, 3-state Column output scan line, 3-state Column output scan line, 3-state Column output scan line, 3-state Ground Scroll lock indicator lock indicator Caps lock indicator input scan line, internal pull high (17K) input scan line, internal pull high (17K) input scan line, internal pull high (17K) input scan line, internal pull high (17K) input scan line, internal pull high (17K) input scan line, internal pull high (17K) input scan line, internal pull high (17K) input scan line, internal pull high (17K) CLOCK line communication, internal pull high (2.2K) DATA line communication, internal pull high (2.2K) power supply CLOCK output Connect resistor 1.8432MHz oscillation.
7-10
Symbol
P92-P95 SCROLL CAPS DATA OSCO R_OSCI
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
FUNCTION Keyboard buffer
SC83053
keyboard will buffer bytes first-in-first-out order when system able receive scan codes from keyboard. response codes repeated codes will buffered. keystrokes generate multiplebyte sequence, entire sequence must into buffer keystroke discarded buffer-overrun condition occurs.
Power-on Reset self test duration keyboard Power-on-Reset(POR) should within milliseconds seconds after power applied keyboard. After executing keyboard executes self test. LEDs turned beginning self test. self test takes minimum milliseconds maximum milliseconds. self test successful, completion code sent system keyboard starts scanning. self test fails, error code sent, keyboard disabled waits command from system. completion codes sent between milliseconds seconds after POR, between milliseconds after RESET command acknowledged.
Keyboard data output When keyboard ready send data system, first checks clock data lines. either state, data stored keyboard buffer. both high state, keyboard starts clocking data out. Data will valid before trailing edge after leading edge clock pulse. During transmission keyboard checks clock line least every microseconds system lowers clock lines before leading edge 10th clock, keyboard should stop sending, then buffer data return clock data lines high state.
Keyboard data input When system ready send data keyboard, first checks clock line keyboard sending data. keyboard sending data sending data reached 10th clock, system inhibit interface forcing clock line more than microseconds prepares send data. keyboard checks clock line status least every milliseconds. system Request Send (RTS) detected, keyboard clocks bits After 10th bit, keyboard checks high state data line then pulls clocks more signal system that data been received. data after 10th bit, indicates frame error. keyboard should continue count until data line goes high, then pulls issues RESEND system.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
Command from system
SC83053
system send commands keyboard time. keyboard needs respond within milliseconds, unless system prevents keyboard output, when doing self test executing RESET. following keyboard input commands actions that keyboard needs take.
/Reset Status indicators
Responds ACK. Receives option byte. Responds ACK. Updates status indicators. Returns previous scanning state.
Echo
Responds with hex. Returns previous scanning state.
Invalid commands
Returns RESEND command. Returns previous scanning state.
Select Alternate Scan Codes
Responds ACK. Clears output buffer. Sets default typematic rate/delay. Clears last typematic key. Receives option byte. Responds ACK. Option byte selects scan code selects scan code
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
selects scan code Returns previous scanning rate.
SC83053
Read (F2)
Responds with ACK. Discontinues scanning. Sends bytes. second byte will sent within after first byte. Resumes scanning.
Typematic Rate/Delay
Responds ACK. Receives rate/delay value byte Responds ACK. rate/delay Note Returns previous scanning state.
Note Repeat period 0.00417 seconds binary value bits binary value bits Delay milliseconds binary value bits always
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
bit4~bit0
00000 00001 00010 00011 00100 00101 00110 00111 01000 01001 01010 01011 01100 01101 01110 01111
SC83053
4~bit0
10000 10001 10010 10011 10100 10101 10110 10111 11000 11001 11010 11011 11100 11101 11110 11111
Typematic rate ±20%
30.0 26.7 24.0 21.8 20.0 18.5 17.1 16.0 15.0 13.3 12.0 10.9 10.0
Typematic rate ±20%
Default rate 10.9 chars/sec Default delay
Enable
Responds with ACK. Clears output buffer. Clears last typematic key. Start scanning.
Default Disable (Hex
Responds with ACK. Resets conditions power-on state. Clears output buffer. Sets default type scan code only default typematic rate/delay.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
Clears last typematic key. Stops scanning,
SC83053
Default (Hex
Responds with ACK. Resets conditions power-on state. Clears output buffer. Sets default type scan code only default typematic rate/delay. Clears last typematic key. Continues scanning,
Keys F7,F8,F9,FA Responds ACK. Clears output buffer. Sets type (affect only scan code operation). Typematic Make/Break Make Typematic/Make/Break Returns previous scanning rate.
Type FB,FC,FD
Responds ACK. Clears output buffer. Receives byte Responds ACK. Sets type (affect only scan code operation). Typematic Make/Break Make Returns previous scanning rate.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
Resend
SC83053
-Sends previous output again. previous byte RESEND, last byte before RESEND shall sent.
Reset
Responds ACK. Checks clock data lines Reset high state least microseconds receives another command. Default scan code
Command system following keyboard output commands. Acknowledge keyboard sends acknowledge response valid command from system except RESEND ECHO. Completion Code This command issued after successful completion keyboard self test. Echo keyboard sends this code response ECHO command. Keyboards 83AB byte issued respond READ command. byte sent first, followed high byte. Keyboard buffer Overrun keyboard buffer overflows, overrun code will replace last byte buffer. keyboard using scan code code sets code Resend When keyboard receives invalid input input with incorrect parity, RESEND command sent.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
Keyboard Scan Code Table
SC83053
keyboard contains scan code sets. system defaults scan code switched following tables show numbers three scan code sets hexadecimal values. keys typematics except pause key. When pressed down, make scan code sent system. When released, break code sent. more keys held down, only last pressed repeats typematic rate. Typematic operation stops when last pressed released, even other keys being released some other keys still held down.
following table shows three scan code sets used keyboard.
Scan code
`(~) -(-) =(+) BACK SPACE
Make code
Break code
,(<) .(>) /(?) SHIFT_R CTRL_L ALT_L SPACE ALT_R CTRL_R
Make code
Break code
continued)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
(Continued) CAPS ;(:) ENTER SHIFT_L Make code Break code (DEL) (ENTER) SCROLL
SC83053
Make code Break code
Base case, shift+num lock make/break
52/E0
Shift case make/break
lock make/break
continued)
53/E0
LEFT
4B/E0
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
(Continued)
SC83053
Shift case make/break
HOME
Base case, shift+num lock make/break
47/E0
lock make/break
4F/E0
48/E0
DOWN
50/E0
PAGE
49/E0
PAGE DOWN
51/E0
RIGHT
4D/ED
Scan code make/break 35/E0
Shift case make/break 35/E0
Scan code make/break
Ctrl case, shift case make/break
case make/break
54/D4
PAUSE Note: 101-key keyboard only. keyboard only.
Make code
Ctrl pressed
left shift held down, AA/2A shift make break sent with other scan codes. right shift held down, B6/36 sent. both shift keys down, both sets codes sent with other scan code. This typematic. associated scan codes occur make key.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
Scan code
SC83053
Break code
`(~) -(-) =(+) BACK SPACE [({) CAPS
Make code
,(<) .(>) /(?) SHIFT_R CTRL_L ALT_L SPACE ALT_R CTRL_R (DEL) (ENTER)
Make code
Break code
continued)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
(Continued)
SC83053
Break code
;(:) ENTER SHIFT_L
Make code
SCROLL
Make code
Break code
LEFT HOME DOWN PAGE PAGE DOWN RIGHT
Base case, shift+num lock make/break
70/E0 71/E0 6B/E0 6C/E0 69/E0 75/E0 72/E0 7D/E0 7A/E0 74/E0
Shift case make/break
lock make/break
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
SC83053
Scan code make/break
4A/E0
Shift case make/break
Scan code make/break
Ctrl case, shift case make/break
7C/E0
case make/break
84/F0
PAUSE Note 101-key keyboard only. 102-key keyboard only.
Make code
Ctrl pressed
left Shift held down, 12/12 shift make break sent with other scan codes. right Shift held down, 59/59 sent. both Shift keys down, both sets codes sent with other scan code. This typematic. associated scan codes occur make key.
Scan code
`(~) -(-) =(+) BACK SPACE
Make code
Break code
Default state
Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic continued)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
(Continued)
SC83053
Break code
[({} CAPS ;(:) ENTER SHIFT_L
Make code
Default state
Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Make/break Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Typematic Make/break Typematic Typematic Typematic Typematic continued)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
(Continued)
SC83053
Break code
,(<) .(>) /(?) SHIFT_R CTRL_L ALT_L SPACE ALT_R CTRL_R LEFT HOME DOWN PAGE PAGE DOWN RIGHT
Make code
Default state
Typematic Typematic Typematic Typematic Typematic Typematic Typematic Make/break Make/break Make/break Typematic Make only Make only Make only Typematic Typematic Make only Make only Typematic Typematic Make only Make only Typematic Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only continued)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
(Continued)
SC83053
Break code
(DEL) (ENTER) PRINT SCROLL PAUSE Note: 101-key keyboard only 102-key keyboard only
Make code
Default state
Make only Make only Make only Make only Make only Typematic Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only Make only
codes scan
LWIN RWIN N-CHG(131)
Make
Break
continued)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
(Continued)
SC83053
Make
(132) ROMA (133) K107 POWER SLEEP WAKE
Break
codes scan
LWIN RWIN N-CHG(131) (132) ROMA (133) K107 POWER SLEEP WAKE
Make
Break
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
codes scan
SC83053
Make
LWIN RWIN N-CHG(131) (132) ROMA (133) K107 POWER SLEEP WAKE Windows 2000 multi-media code:
Break
MAKE/BREAK MAKE/BREAK MAKE/BREAK MAKE MAKE MAKE TYPEMATIC TYPEMATIC TYPEMATIC
SET1
MAKE K130: Back K131: Forward K132: stop K133: Refresh K134: Search K135: Favorites K136: Web/Home K137: Mail K138: Mute K139: VolumeK140: Volume+ K141: Play/Pause K142: Stop K143: Track K144: Next track K145: Media Select K146: Computer K147: Calculator E06A E069 E068 E067 E065 E066 E032 E06C E020 E02E E030 E022 E024 E010 E019 E06D E06B E021 BREAK E0EA E0E9 E0E8 E0E7 E0E5 E0E6 E0B2 E0EC E0A0 E0AE E0B0 E0A2 E0A4 E090 E099 E0ED E0EB E0A1
SET2
MAKE E038 E030 E028 E020 E010 E018 E03A E048 E023 E021 E032 E034 E03B E015 E04D E050 E040 E02B BREAK E0F038 E0F030 E0F028 E0F020 E0F010 E0F018 E0F03A E0F048 E0F023 E0F021 E0F032 E0F034 E0F03B E0F015 E0F04D E0F050 E0F040 E0F02B
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
Turbo Function: 2.1Hz 4.2Hz 7.2Hz 16.3Hz 21Hz
SC83053
30Hz 46Hz Loak
Internal-Multikey Function:
Multi-Media Function
Pad_2 Pad_3 Pad_4 (M/Mode) Pad_5 Pad_6 Pad_7 Pad_8 Pad_9 VolumePlay/Pause Track Media Next Track Mute Volume+ Stop
Internal Function
Pad_Enter Pad_+ Pad_Pad_. Right Arrow Left Arrow Down Arrow Arrow Web/Home Mail Favorites Search Forward Back Stop Refresh
O.S. Function
Pad_0 Pad_1 Computer Calculator
Fig1. Windows 2000 keyboard layout
K130
K131
K132
K133
K134
K135
K136
K137
K138
K139
K140
K141
K142
K143
K144
K145 K146 K147
SCROLL
PAUSE
(~.) CAPS
ALT_L
SPACE
,(<)
;(:) .(>) ALT_R
[({) '(") /(?)
](})
SPACE ENTER SHIFT_R CTRL_R
HOME
PAGE PAGE DOWM
(ENTER)
SHIFT_L CTRL_L
LEFT DOWN RIGHT
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
Fig2. 107-key keyboard layout
SC83053
POWER SLEEP WAKEUP
(~.) CAPS
LWIN
ALT_L
SPACE
,(<)
;(:) .(>) ALT_R
[({) '(") /(?) RWIN
](})
SPACE ENTER
PRINT SCROLL HOME
PAUSE PAGE PAGE DOWN
(ENTER)
SHIFT_L CTRL_L
SHIFT_R
LEFT
DOWN RIGHT
CTRL_R
Fig3. 104-key keyboard layout
SCROLL PAUSE
(~.) CAPS
LWIN
ALT_L
SPACE
,(<)
;(:) .(>) ALT_R
[({) '(") /(?) RWIN
](})
SPACE ENTER
HOME
PAGE PAGE DOWN
(ENTER)
SHIFT_L CTRL_L
SHIFT_R
LEFT
DOWN RIGHT
CTRL_R
TIMING DIAGRAMS
Fig4. Keyboard output data timings
10th 11th
DATA
Start
Parity
Stop
Fig5. Keyboard input data timings
Inhibit 10th 11th
DATA
Start
Parity
Stop
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
APPLICATION CIRCUIT
CAPS
SC83053
SCROLL
DATA
CAPS
DATA
R_OSCI
OSCO
SCROLL
SC83053
Special Func. Internal-Multi Func. Turbo func.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
PAUSE SCROLL Wake SHIFT-L Mail K150 (KC-L) WIN-L WWWfavorite ENTER SHIFT-R WWWforward WIN-R WWWstop MyComputer WWWback WWWrefresh stop calculator VolumeVolume+ Play/Pause Next track BACK SPACE [({) ALT-L ENTER M/Mode .(>) ,(<) ALT-R POWER SLEEP CRTL-R N-CHG ROMA WAKE
SC83053
CTRL-L `(~) 5(%) 6(^) 8(*) (`(') (`)') PRINT PAGE PAGE DOWN HOME Prev track Media SLEEP POWER 7(&) 4($) 3(#) 1(!) 2(@)
mute Web/home
WWWsearch K151 (KC-R)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
CHIP TOPOGRAPHY
SC83053
Chip Size:1.72D2.17(mm2) substrate should connected level.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
COORDINATES (Unit:
SC83053
937.20 928.25 938.55 938.40 679.15 555.95 432.75 284.20 111.65 -70.75 -239.30 -401.25 -550.70 -695.40 -840.50 -933.75 -933.75 -933.75 -933.75 -933.75
Symbol
OSCO DATA
234.40 -270.90 -482.25 -708.20 -707.95 -707.95 -707.95 -707.95 -707.95 -707.95 -707.95 -707.95 -707.95 -707.95 -707.95 -517.20 -394.00 -270.80 -147.60 -24.40
Symbol
OSCI
98.80 221.80 345.00 468.20 591.40 714.60 699.55 699.55 699.55 699.55 699.55 699.55 699.55 699.55 694.35 694.35 694.35 633.95 397.05
-933.75 -933.75 -933.75 -933.75 -933.75 -933.75 -716.85 -553.00 -400.45 -239.85 -72.80 106.10 265.20 404.25 527.45 650.65 773.85 929.90 937.25
Note: original point coordinate center.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2001.11.8.
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