EM83049 View Datasheet(PDF) - ELAN Microelectronics

Part Name

Description

Manufacturer

EM83049

KEYBOARD ENCODER

ELAN Microelectronics 

EM83049

KEYBOARD ENCODER

TIMING DIAGRAMS

CLK

DATA

1ST

CLK

2nd

CLK

T3

T1

Start Bit

T4

T2

Bit 0

10th

CLK

Parity Bit

Fig 3. Keyboard output data timings

11th

CLK

T5

Stop Bit

CLK

I/O

Inhibit

1ST

CLK

T3 T4

T6

Start Bit

Bit 0

DATA

2nd

CLK

9th

CLK

10th

CLK

11th

CLK

Parity Bit Stop Bit

Fig 4. Keyboard input data timings

APPLICATION CIRCUIT

DATA

CLK

C16

C17

XT

C0

C1

C2

C3

C4

C5

C6

C7

C8

C9

VCC

U1

1 VSS

2 NC

3 DATA

4 CLK

5 P90

6 P91

7 NC

8 NC

9 XT

10 NC

11 P50

12 P51

13 P52

14 P53

15 P54

16 P55

17 P56

18 P57

19 P80

20 P81

10µ

51K

OSCO 40

R-OSCI 39

VDD 38

CAPS 37

NUM 36

SCROLL 35

P67 34

P66 33

P65 32

P64 31

P63 30

P62 29

P61 28

P60 27

P87 26

P86 25

P85 24

P84 23

P83 22

P82 21

EM83049

R0 R1 R2 R3 R4 R5 R6 R7

C0 126

064

058 116

SCROLL C1 017 016 031 110 046 131 001 002

CAPS NUM

C2 018 030 032 045 047 132 112 003

C3 019 114 033 115 048 133 113 004

C4 020 021 034 035 049 050 006 005

C5 023 022 037 036 052 051 007 008

R7

R6

C6 024 028 038 117 053 056 013 009

R5

C7 025 118 039

054 APP 119 010

R4

R3

C8 026 027 040 041 042 055 012 011

R2

C9 125

060

062

124

R1

R0

C10 014 015 029 122 043 123 120 121

C15

C14

C11 091 092 093 061 090 084 076

C13

C12 096 097 098 099 095 089 075

C12

C11

C13 101 102 103 104 100 105 085 086

C10

C14 106 107 108 083

079 080 081

C15

044 057

C16

LWIN

KR

C17 KL

RWIN

* This specification are subject to be changed without notice.

5.2.1997 17

Share Link: