UR5HCFJ8_技术文档

La p Co d e r^TMUR5 HCFJ 8

Low-Power Keyboard

Encoder for Portable Systems

HID & S YS TEM MANAGEMENT P RODUCTS , KEYCODER^TMFAMILY

DESCRIPTION

FEATURES

The LapCoder^TMis a versatile, low-

power keyboard encoder for

portable systems. The UR5HCFJ8

provides two bi-directional channels

for communication with a BIOS-

compatible system as well as

any optional keyboard-compatible

devices, such as a 101/102 desktop

keyboard.

• Interfaces the Fujitsu FKB7211 or

other similar laptop/notebook

keyboards to a BIOS-compatible

systems

• Low-power, single IC suitable for

3V battery-operated systems

• Implements all functions of an

101/102 keyboard with only

82-keys

• Available in DIP, PLCC and Quad

Flat packages

• Custom versions available in small

or large quantities

• AT / PS/2-compatible

• Interfaces an external keyboard /

keypad or other 8042-compatible

devices

The UR5HCFJ8 fully supports the

IBM standard keyboard

APPLICATIONS

• Laptop/Notebook

• Portable Equipment

• Industrial Keyboards

• POS Terminals

• Public Information Kiosks

communication protocol; each key

press generates one of the scan

codes designated in the IBM

Technical Reference Manuals.

The keyboard encoder handles

the scanning, debounce, and

encoding of 82 keys organized on

an 8x16 matrix and supports

embedded numeric keypad

functions as well as alternate scan

codes for specific keys, so that a

keyboard with only 82 keys is able

to emulate the functionality of a

101/102 keyboard.

PIN DESCRIPTIONS

6

40

39

1

R7

SL

R5

R4

R3

7

RP

KD

KC

EKC

EKD

_RESET

_IRQ

VX

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

VCC

OSCI

OSCO

EKC1

R7

1

2

34 R2

R1

CL 12

C0

P LCC

23

3

In addition to the system’s keyboard

communication port the UR5HCFJ8

provides a fully functional keyboard

input port that can be used by a

standard 82/101/102 keyboard or

another 8042-compatible device,

such as an external numeric

keypad, an OCR, or a bar-code

reader. Input from both the matrix

and the external device is

R0

C8

C9

C10

C1

C2

C3

C4

NL

4

R6

5

RP

SL

6

29

28

17

18

KD

KC

R5

7

R4

8

EKC

EKD

CL

R3

9

R2

10

11

12

13

14

15

16

17

18

19

20

DIP

R1

C0

R0

C1

C8

SL

R5

R6

C2

C9

RP

KD

KC

C3

C10

C11

C12

C13

C14

C15

multiplexed and presented to the

system as if it were coming from a

single source.

R4

C4

R3

C5

R2

EKC

EKD

CL

C6

R1

QFP

C7

R0

The features of UR5HCFJ8 make it

ideal for use in PC/AT/PS/2

laptop/notebook designs that utilize

the Fujitsu FKB7211 low-profile, full-

travel membrane keyboard.

C8

C9

C10

C11

C0

VSS

C1

C2

C3

LapCoder is a trademark of Semtech Corp. All

other trademarks belong to their respective

companies.

Copyright Semtech, 1997-2001

DOC5-FJ8-DS-107

www.semtech.com

1

ORDERING CODE

P a c k a g e o p t io n s

40-pin Plastic DIP

44-pin, Plastic PLCC

44-pin, Plastic QFP

P it c h In m m ’s

2 54 mm

1.27 mm

TA = -4 0 °C t o +8 5 °C

UR5HCFJ8-P

UR5HCFJ8-FN

0.8 mm

UR5HCFJ8-FB

FUNCTIONAL DIAGRAM

NL/CL/SL

3

Data Buffer

Status LEDs

R0-

R7

Row Data Inputs

EKC1

Interrupt Control

8

Column Select

Ouputs

C0-

C15

16

Ke yb o a rd En c o d e r

KC

KD

PC

Communication

Channel

Mode Control

8042 Emulation

(External Keyboard)

Communication

Channel

EKC

EKD

Copyright Semtech, 1997-2001

DOC5-FJ8-DS-107

www.semtech.com

2

FUNCTIONAL DESCRIPTION

PIN DEFINITIONS

The UR5HCFJ8 consists functionally

of six major sections (see Functional

Diagram, previous page). These

are the Keyboard Encoder, the

Mode Control Unit, the PC

Communication Channel, the Data

Buffer, the Interrupt Control and the

8042 Emulation Channel. All

Mn e m o n ic

VCC

VSS

DIP P LCC

QFP

38

17

37

36

Typ e Na m e a n d Fu n c t io n

40

20

39

38

1

44

22

43

42

1

I

P o w e r S u p p ly: +5V

Gro u n d

Os c illa t o r in p u t

OSCI

OSCO

_RESET

EKC1

O

Os c illa t o r o u t p u t

41

35

I

Re s e t : Apply 0V to provide orderly start-up

Ex t e rn a l Ke yb o a rd Clo c k 1 : Connects

to external keyboard Clock Line and is used

to generate an interupt for every Clock Line

transition.

37

41

sections communicate with each

other and operate concurrently.

VX

VXA

RP

3

4

3

7

9

43

I

Tie to Vcc

Re s e rve d : Ties to Vcc

6

8

2

4

KEYBOARD ENCODER

KC

I/O

Ke yb o a rd Clo c k : Connects to PC

keyboard port clock line

The controller continuously scans a

keyboard organized as an 8 row by

16 column matrix for a maximum of

128 keys. Smaller-size keyboards

are supported provided that all

KD

7

10

9

8

11

10

2

3

6

I/O

Ke yb o a rd Da t a : Connects to

PC port data line

EKD

ECK

_IQR

Ex t e rn a l Ke yb o a rd Da t a : Connects to

external keyboard Data Lne

Ex t e rn a l Ke yb o a rd Clo c k : Connects

to external keyboard Clock Line

In t e rru p t Lin e : Reserved for low-power

applications

5

unused row lines are pulled to Vcc.

2

42

I

The IC selects 1 of the 16 column

lines (C0-C15) every 512 mS and

then reads the row data lines (R0-

R7). A key closure is detected as a

0 in the corresponding position of

the matrix. A complete scan cycle

for the entire keyboard takes

approximately 9.2 mS. Each key

found pressed is debounced for a

period of 20 mS. Once the key is

verified, the corresponding key

code(s) are loaded into the transmit

buffer of the PC Communication

Channel.

R0-R5

R6

R7

29-34 32-37

27-32

1

34

8-15

I

Ro w Da t a In p u t s

5

6

36

39

C0-C7

12-19 13-17

19-21

28-21 31-24

O

Co lu m n S e le c t Ou t p u t s : Selects 1 of

16 columns

O

C8-C15

26-23

21-18

7

44

33

16,22

39,40

CL

NL

SL

NC

11

4

12

5

Ca p s Lo c k LED

Nu m Lo c k LED

S c ro ll Lo c k LED

No Co n n e c t s : These pins are unused.

35

38

18

23,40

No t e : An underscore before a pin mnemonic denotes an active low signal.

S w it c h Ma t rix En c o d in g

Each matrix location is programmed

to represent either a single key or a

key combination of the IBM 101/102

standard keyboard.

S c a n Co d e Ta b le S e t s

The UR5HCFJ8 supports all three

scan code table sets. Scan Code

Sets 1 and 2 are the default sets for

AT/PS/2 systems. Scan Code Table

Set 3 allows the user to program

individual key attributes such as

Make/Break and Typematic or

Single-Touch Action. For more

information, refer to the IBM

Technical Reference Manuals.

Copyright Semtech, 1997-2001

DOC5-FJ8-DS-107

www.semtech.com

3

KEYBOARD ENCODER, (CON’T)

MODE CONTROL

Em b e d d e d Nu m e ric Ke yp a d

Operating modes are defined by the logic level of the mode pin in the Mode

Control Unit.

The UR5HCFJ8 implements an

embedded numeric keypad. The

Numeric Keypad Function is

invoked by pressing the Num Lock

Key.

N-Ke y Ro llo ve r

In this mode, the code(s) corresponding to each key press are transmitted

to the host system as soon as that key is debounced, independently of the

release of other keys. If a key is defined to be Typematic, the

FN Ke y

corresponding code(s) will be transmitted while that key is held pressed.

When the key is released, the corresponding break code(s) are then

transmitted to the host system. If the released key happens to be the most

recently pressed, then Typematic Action is terminated. There is no limitation

to the number of keys that can be held pressed at the same time. However,

two or more key closures, occurring within a time interval of less than 5 mS,

will set an error flag and will not be processed. This procedure protects

against the effects of accidental key presses.

A special FN Key has been

implemented to perform the

following functions while it is held

pressed:

• Function Key F1 becomes F11

• Function Key F2 becomes F12

• Ctrl Left Key becomes Ctrl Right

• Alt Left Key becomes Alt Right

“Gh o s t ” Ke ys

In any scanned contact switch matrix, whenever three keys defining a

rectangle on the switch matrix are held pressed at the same time, a fourth

key positioned on the fourth corner of the rectangle is sensed as being

pressed. This is known as the “ghost” or “phantom” key problem. Although

the problem cannot be totally

If Num Lock is set:

• Embedded numeric keypad keys

become regular keys.

Actual key presses

eliminated without using external

If Num Lock is not set:

hardware, there are methods to

neutralize its negative effects for most

practical applications. Keys that are

intended to be used in combinations or

are likely to be pressed at the same

time by a fast typist (i.e., keys located

in adjacent positions on the keyboard)

should be placed in the same row or

column of the matrix, whenever

• Embedded numeric keypad keys

provide the same codes as a

numeric keypad when the Num

Lock is not set (Arrow Keys, PgUp,

PgDn, etc.)

“Ghost”

Key

S t a t u s LED in d ic a t o rs

possible. Shift keys (Shift, Alt, Ctrl)

should not reside in the same row (or

column) with any other keys.

Fig u re 1 : “Ghost” or “Phantom” Key

Problem

The controller provides interfacing

for three LED shift status indicators.

All three pins are active low to

indicate the status of the host

system (Num Lock, Caps Lock and

Scroll Lock). They are set by the

system (AT/PS/2 protocol).

The UR5HCFJ8 has built-in mechanisms to detect the presence of “ghost”

keys, thus eliminating the necessity of external hardware.

Copyright Semtech, 1997-2001

DOC5-FJ8-DS-107

www.semtech.com

4

SPECIAL HANDLING

PC COMMUNICATION

Co m m a n d

He x Va lu e

Ho t P lu g -In s o f Ex t e rn a l

De vic e

The UR5HCFJ8 implements all the

standard functions of

Key Detection

Error/Overrun

00*

communication with a BIOS-

compatible PC/XT or AT/PS/2 host

system. Two lines, KC and KD,

provide bi-directional clock and

data signals. In addition, the

UR5HCFJ8 supports all commands

from and to the system, as

The UR5HCFJ8 will detect the

presence of an external device.

If an external keyboard or other

device was not connected during

power-on and is connected at a

later time, the encoder will proceed

with the normal reset routine in

order to properly initialize the

external keyboard. After

Keyboard ID

83AB

AA

FC

BAT Completion Code

BAT Failure Code

Echo

EE

described in the IBM Technical

Reference Manuals.

Acknowledge (Ack)

Resend

FA

FE

The following table shows the

commands that the system may

send and their values in hex.

Key Detection

Error/Overrun

FF**

communication has been

established, the encoder will

continue to check for the presence

of the external keyboard. While the

external device is connected, the

encoder will not enter the sleep

mode. If the device is

disconnected at a later time, the

encoder will become aware of it.

If a subsequent connection takes

place, the controller will reinitiate a

reset sequence. This unique

feature allows the user to connect

or disconnect an external device at

any time without having to reset the

system.

*Code Sets 2 and 3

**Code Set 1

Co m m a n d

He x Va lu e

Set/Reset Status

Indicators

ED

Ta b le 3 : Keyboard Commands to the

System (AT/PS/2 protocol)

Echo

EE

EF

F0

8 0 4 2 Em u la t io n Ch a n n e l

Invalid Command

The UR5HCFJ8 fully emulates a

system’s keyboard port, available to

a standard 82/101/102 external

keyboard or other 8042-compatible

device. Communication with a

keyboard-compatible device is

accomplished by clock and data

lines via EKC and EKD pins,

respectively. A third pin, EKC1,

connects to the Clock Line and

interrupts the controller whenever

the external device initiates a

communication session. When

power is first applied, the controller

proceeds with the standard reset

sequence with the external device.

Data and commands initiated from

the external device are buffered in

the controller’s FIFO along with data

from the scanned matrix, and then

are presented to the system as if

they were coming from a single

source. After they are

Select Alternate

Scan Codes

Invalid Command

Read ID

F1

F2

F3

Set Typematic

Rate/Delay

Enable

F4

F5

F6

Default Disable

Set Default

S h ift S t a t u s LEDs

Set All Keys

Typematic

Make/Break

Make

Shift Status LEDs (Num Lock, Caps

Lock and Scroll Lock) indicate the

status of the system and are

controlled by commands sent from

the system. Set/Reset Status

Indicator commands from the

system will be executed both by the

external keyboard and the scanned

matrix. For example, if the user

presses the Caps Lock Key on

either keyboard, the Caps Lock

LED will be affected in both

F7

F8

F9

FA

Typematic/Make/Break

Set Key Type

Typematic

Make/Break

Make

FB

FC

FD

Resend

Reset

FE

FF

Ta b le 2 : Keyboard Commands from the

System (AT/PS/2 protocol)

acknowledged, commands and

data from the system are

transmitted to the external device.

keyboards. The LED status

These commands are supported in

the AT/PS/2 protocol and can be

sent to the keyboard at any

time.The following table shows the

commands that the keyboard may

send to the system.

indicators are properly set after

every new connection of an external

keyboard.

Copyright Semtech, 1997-2001

DOC5-FJ8-DS-107

www.semtech.com

5

KEY MAP FOR FKB7211 (UR5HCFJ8)

Co lu m n s (C0 –C1 3 )

0

1

2

3

4

5

6

7

8

9

10

11

12

13

LCtrl*

Esc

Tab

Fn

LAlt*

Space

` (BkQt) Insert

Delete

ArrLft

ArrDn

LShift

ArrRt

F1*

1

Z

X

V

S

C

. (per)

Pad .

M

Pad 0

J

Pad 1

U

/

ArrUp

RShift

End

Pad /

CapLk

B

N

F

, (com) , (appos) Enter

PgDn

PgUp

BkSpc

PrtScr

Pause

Home

F2

2

A

3

D

T

K

Pad 2

I

Pad 5

F10

L

;

Pad 3

O

Pad 6

Pad +

P

Pad -

4

Y

F8

Pad 4

F9

F4

F3

Q

F5

F6

6

F7

NumLk ScrLk

%

5

W

7

8

9

0

- (dash)

]

=

\

Pad 7

R

Pad 8

G

Pad 9

H

Pad *

[

E

Copyright Semtech, 1997-2001

DOC5-FJ8-DS-107

www.semtech.com

6

KEYBOARD LAYOUTS (US ENGLISH)

Depending on the status of the Num Lock and the FN Key, the UR5HCFJ8 implements one of four keyboard

layouts. (Key numbering of a standard 101/102 keyboard is shown.)

Layout A (Default layout)

126

110

Esc

113

114

115

116

118

119

120

121

F10

90

NmLk

125

ScLk

124

PrSc

1 1 7

112

F6

F1

F2

F3

F4

F5

F7

F8

F9

Brk

13

80

2

3

4

5

6

7

8

9

10

11

12

15

1

2

3

4

5

6

7

8

9

0

-

BkSp

Home

=

21

22

23

85

16

17

18

19

20

24

25

28

29

26

27

[

]

\

Tab

Q

W

E

R

T

Y

I

0

P

PgUp

U

33

48

34

49

35

36

51

37

52

38

53

39

86

30

CpsLck

31

32

47

40

55

41

43

Enter

,

K

A

S

D

F

G

H

J

L

;

PgDn

¹²8⁶1

110

113

114

115

116

118

119

120

121

90

NmLk

125

124

1 1 7

112

57

50_F6

46_F2

54

F10

_PrSc83

44 _F1

Esc

F3

F4

F5

F7

F8

F9

ScLk

Brk

,

Shift

Z

X

C

V

B

N

M

.

1

/

Shift

End

13

80

2

3

4

5

6

7

8

9

10

11

12

15

BkSp

84

1

2

3

4

5

6

7

8

9

0

-

Home

=

89

75

60

76

Del

79

28

58

61

24

FN

SPACE

21 22

,

Ctrl

16

Alt

Ins

23

85

17

18

19

20

25

29

26

27

[

]

\

Tab

Q

W

E

R

T

Y

I

0

P

PgUp

U

33

34

49

35

50

36

51

37

52

38

53

39

86

30

CpsLck

31

32

40

55

41

43

Enter

,

K

A

S

D

F

G

B

H

J

L

;

/

PgDn

Layout B (Num Lock is set)

57

48

81

46

47

54

83

44

Shift

,

Z

X

C

V

N

M

.

_F91

Shift

76⁹⁰

End

8¹9²⁶

110

113

114

115

116

118

119

120

121

125

1 1 7

112

75

8¹4²⁴

PrSc

60

79

_Esc58

F6

F2

F3

F4

F5

F7

F8

F10

ScLk

Brk

^F1FN

NmLk

61

SPACE

,

Ctrl

Alt

Ins

100

Del

12

13

80

2

3

4

5

6

7

91

96

101

15

8

7

9

1

2

3

4

5

6

-

BkSp

Home

=

*

21

22

92

85

16

17

18

19

20

97

102

28

29

105

27

[

]

\

Tab

Q

W

E

R

T

Y

5

PgUp

4

6

-

33

34

49

35

50

36

51

93

99

98

53

103

3

86

30

CpsLck

31

46

32

47

60

106

+

41

43

Enter

,

2

A

Z

S

X

D

F

G

H

1

0

PgDn

48

95

57

79

81

104

.

83

44

Shift

,

C

V

B

N

/

Shift

End

89

1

75

Ins

84

76

Del

58

61

FN

SPACE

,

Ctrl

Alt

Copyright Semtech, 1997-2001

DOC5-FJ8-DS-107

www.semtech.com

7

KEYBOARD LAYOUTS (US ENGLISH)

Depending on the status of the Num Lock and the FN Key, the LapCoder^TMimplements one of four keyboard

layouts. (Key numbering of a standard 101/102 keyboard is shown.)

Layout C (FN key pressed)

126

110

Esc

123

F12

114

115

116

118

119

120

121

F10

90

NmLk

125

ScLk

124

PrSc

1 1 7

122

F11

F6

F3

F4

F5

F7

F8

F9

Brk

13

80

2

3

4

5

6

7

91

96

101

100

12

15

Home

1

2

3

4

5

6

PgUp

-

BkSp

Home

=

*

21

22

92

85

16

17

18

19

20

97

102

28

29

105

27

[

]

\

Tab

Q

W

E

R

T

Y

5

PgUp

-

33

48

34

49

35

50

36

51

93

End

98

53

103

86

30

CpsLck

31

46

32

47

62

106

+

41

43

Enter

,

A

Z

S

X

D

C

F

V

G

H

PgDn

99

Ins

2

95

81

104

Del

83

44

Shift

,

B

N

/

Shift

End

89

1

75

Ins

84

76

79

64

61

FN

SPACE

,

Ctrl

Alt

Del

Layout D (Num Lock set and FN key pressed)

126

110

Esc

123

114

115

116

118

119

120

121

F10

90

NmLk

125

124

1 1 7

122

F6

F1

F2

F3

F4

F5

F7

F8

F9

ScLk

PrSc

Brk

13

80

2

3

4

5

6

7

8

9

10

11

12

15

1

2

3

4

5

6

7

8

9

0

-

BkSp

Home

=

21

22

23

85

16

17

18

19

20

24

25

28

29

26

27

[

]

\

Tab

Q

W

E

R

T

Y

I

0

P

PgUp

U

33

48

34

49

35

50

36

51

37

52

38

53

39

54

86

30

CpsLck

31

46

32

47

62

40

55

41

43

Enter

,

K

A

Z

S

X

D

C

F

V

G

H

J

L

;

/

PgDn

57

79

81

83

44

Shift

,

B

N

M

.

1

Shift

End

89

75

Ins

84

76

64

61

FN

SPACE

,

Ctrl

Alt

Del

Copyright Semtech, 1997-2001

DOC5-FJ8-DS-107

www.semtech.com

8

IMPLEMENTATION NOTES FOR THE UR5HCFJ8

The following notes pertain to the suggested schematics found on the next

pages.

The Built-in Oscillator on the UR5HCFJ8 requires the attachment of the 4.00

MHz Ceramic Resonators with built-in Load Capacitors.. You can use either

an AVX, part number PBRC-1.00 BR; or a Murata part number

CSTCC4.00MG ceramic resonator.

It may also be possible to operate with the 4.00 MHz Crystal, albeit with

reduced performance. Due to their high Q, the Crystal oscillator circuits

start-up slowly. Since the LapCoder^TMconstantly switches the clock on and

off, it is important that the Ceramic Resonator is used (it starts up much

quicker than the Crystal). Resonators are also less expensive than Crystals.

Also, if Crystal is attached, two Load Capacitors (33pF to 47pF) should be

added, a Capacitor between each side of the Crystal and ground.

In both cases, using Ceramic Resonator with built-in Load Capacitors, or

Crystal with external Load Capacitors, a feedback Resistor of 1 Meg should

be connected between OSCin and OSCout.

Troubleshoot the circuit by looking at the Output pin of the Oscillator. If the

voltage it half-way between Supply and Ground (while the Oscillator should

be running) --- the problem is with the Load Caps / Crystal. If the voltage it

all the way at Supply or Ground (while the Oscillator should be running) ---

there are shorts on the PCB.

NOTE: when the Oscillator is intentionally turned OFF, the voltage on the

Output pin of the Oscillator is High (at the Supply rail).

Copyright Semtech, 1997-2001

DOC5-FJ8-DS-107

www.semtech.com

9

SUGGESTED INTERFACING FOR THE LAPCODER^TMUR5HCFJ8

Vcc

100K

STATUS LEDs

Vcc

1uF

GND

Vcc

1

44

5

12

CL

38

RST

Vcc

NL

SL

C15

C14

C13

C12

C11

C10

C9

C8

C7

C6

C5

C4

C3

C2

C1

C0

C4A

24

CS15

CS14

CS13

CS12

CS11

CS10

CS9

CS8

CS7

CS6

CS5

25

26

27

28

29

30

31

21

20

19

17

16

15

14

13

18

4.7K 4.7K 2K 2K

11

10

EKDAT

EKD

8042

EMULATION

PORT

EKBCLK

EKC

COLUMN

SELECT

OUTPUTS

41

2

EKC1

CS4

CS3

CS2

CS1

Vcc

4 4 P in P LCC

IRQ

KC

KD

CS0

KBCLK

9

8

PC KEYBOARD

PORT

COMMUNICATIONS

TO SWITCH MATRIX

KBDAT

R7A

R7

R6

R5

R4

R3

R2

R1

R0

40

39

6

37

36

35

34

33

32

RDAT7

RDAT6

RDAT5

RDAT4

RDAT3

RDAT2

RDAT1

RDAT0

4 x 47 Pf

ROW

DATA

INPUTS

23

NC

GND

OSCI

43

OSCO

42

Vss

22

RP VXA

VX

4

7

3

LINE INTERFACE

Vcc

1 MEG

GND

Vcc Vcc

8

x

22K

4.00 MHz

Vcc

22pF

GND

Copyright Semtech, 1997-2001

DOC5-FJ8-DS-107

www.semtech.com

1 0

MECHANICALS FOR THE UR5HCFJ8-P

40

21

20

B

L

1

A

C

J

N

M

K

F

D

G

H

Seating

Plane

Note s :

1. Pos itiona l tole ra nc e of le a d s (D) s ha ll b e

within 0.25 mm (0.010) a t ma ximum ma te ria l

c ond ition, in re la tion to the s e a ting p la ne a nd

e a c h othe r.

2. Dimins ion L is to the c e nte r of the le a d s whe n

the le a d s a re forme d p a ra lle l.

3. Dime ns ion B d oe s not inc lud e mold fla s h.

MILLIMETERS

INCHES

DIM MIN MAX MIN MAX

A

B

C

D

F

51.69 52.45

14.22

13.72

2.065

0.560

2.035

0.540

5.08 0.155 0.200

0.56 0.014 0.022

1.52 0.040 0.060

3.94

0.36

1.02

G

H

J

K

L

2.54 BSC

0.100 BSC

2.16

0.085

0.015

0.135

1.65

0.065

0.20 0.38 0.008

2.92 0.015

3.43

15.24 BSC 0.600 BSC

0 ⁰

0.51 1.02 0.020 0.040

15 ⁰

0

15 ⁰

0

M

N

DOC5-FJ8-DS-107

www.semtech.com

1 1

MECHANICALS FOR THE UR5HCFJ8-FN

Y BRK

N

D

M

0.18 (0.007)

T

N S

P

S

L

S

T

M S

-

B

M

L

4 4

M

0.18 (0.007)

S S

N S P L M S

-

U

Le a d s

P LC C

Note 1

W

Z1

D

(Note 1) 44

1

P

V

X

G1

M

0.18 (0.007)

T

L

S

M S N S

P

S

-

A

R

View D-D

M

0.25 (0.010)

S S

T N S P L M S

-

Z

S

M S N S P

-

M

0.18 (0.007)

T

S S

L M S N S P

-

H

N S

S S

P L M S

C

K1

E

+

K

G

M

0.18 (0.007)

T

S S

L M S N S P

-

F

N S

S S

P L M S

-

44

(Note 1)

J

Detail S

0.010 (0.004)

Seating Plane

G1

Detail S

T

M

0.25 (0.010)

T

L

S

M S N S

-

P

-

S

MILLIMETERS

INCHES

DIM MIN MAX MIN MAX

A

B

C

E

17.40 17.65

0.695

0.685

17.40 17.65 0.685 0.695

4.20 4.57 0.165 0.180

2.29 2.79 0.090 0.110

0.33 0.48 0.013 0.019

F

G

H

J

1.27 BSC

0.66 0.81 0.026 0.032

0.050 BSC

Note s :

1. Due to s p a c e limita tion, the c hip

is re p re s e nte d b y a g e ne ra l (s ma lle r)

c a s e outline d ra wing ra the r tha n

s howing a ll 44 le a d s .

2. Da tums L, M, N, a nd P d e te rmine whe re

the top of the le a d s hould e r e xits p la s tic

b od y a t mold p a rting line

3. DIM G1, true p os ition to b e me a s ure d

a t Da tum T, Se a ting Pla ne

4. DIM R a nd U d o not inc lud e mold

p rotus ion. Allowa b le mold p rotus ion is

0.25 (0.010) p e r s id e .

0.51

0.64

-

0.020 -

0.025 -

K

R

U

V

W

X

Y

Z

16.51 16.66 0.650 0.656

1.07 1.21 0.042 0.048

1.07 1.42 0.042 0.056

-

0.50

10 ⁰

-

0.020

0

2

10

G1 15.50 16.00 0.610 0.630

K1 1.02

0.040 -

10

5. Dime ns ioning a nd tole ra nc ing p e r Ans i

Y14.5M, 1982

6. Controlling d ime ns ion: Inc h

-

0

Z1

2

10

2

DOC5-FJ8-DS-107

www.semtech.com

1 2

MECHANICALS FOR THE UR5HCFJ8-FB

L

33

23

B

A,B,D

34

22

A

B

V

L

Detail A

44

12

1

11

Note s

D

1. Dime ns ioning a nd tole ra nc ing p e r Ans i

Y14.5-M, 1982

A

2. Controlling d ime ns ion: Millime te r

3. Da tum Pla ne "H" is loc a te d a t the

b ottom of the le a d a nd is c oinc id e nt

with the le a d whe re the le a d e xits

the p la s tic b od y a t the b ottom of the

p a rting line .

M

0.20 (0.008)

C

A-B

S

D

S

0.05 (0.002) A-B

F

S

Base Metal

4. Da tums -A-, -B-, a nd -D- to b e d e te rmine d

a t Da tum Pla ne -H-.

M

0.20 (0.008)

H

S

5. Dime ns ions S a nd V to b e d e te rmine d

a t s e a ting p la ne -C-.

6. Dime ns ions A a nd B d o not inc lud e

Mold p rotus ion. Allowa b le p rotus ion

is 0.25 (0.010) p e r s id e . Dime ns ions

A a nd B d o inc lud e mold mis ma tc h

a nd a re d e te rmine d a t Da tum Pla ne -H-.

7. Dime ns ion D d oe s not inc lud e Da nb a r

p rotrus ion. Allowa b le Da nb a r

p rotrus ion is 0.08 (0.003) tota l in

e xc e s s of the D d ime ns ion

J

N

a t Ma ximum Ma te ria l Cond ition.

Da nb a r c a nnot b e loc a te d on the

lowe r ra d ius or the foot.

D

M

0.20 (0.008)

C

A-B

S

D

S

T

Section B-B

MILLIMETERS

INCHES

Datum

Plane

R

DIM MIN MAX MIN MAX

A

B

C

D

E

9.90 10.10

2.10 2.45 0.083 0.096

0.30 0.45 0.012 0.018

2.00 2.10 0.079 0.083

0.30 0.40 0.012 0.016

0.398

0.390

H

K

W

Detail C

Q

F

X

G

H

J

0.80 BSC

0.031 BSC

M

0.25

0.010

-

0.13 0.23 0.005 0.009

K

L

0.65

0.026

Detail C

0.95

0.037

8.00 REF

0.315 REF

0

M

N

Q

R

S

5

10 ⁰

5

10 ⁰

0

0.13 0.17 0.005 0.007

0

E

Datum

Plane

0

7

0

7

C

H

0.13 .30 0.005 0.012

12.95 13.45 0.510 0.530

0.01 (0.004)

C

Seating

Plane

T

0.13

0.005

-

0

-

U

V

W

X

G

0.530

12.95 13.45 0.510

0.40 0.016

1.6 REF

M

H

-

0.063 REF

DOC5-FJ8-DS-107

www.semtech.com

1 3

ELECTRICAL SPECIFICATIONS

Ab s o lu t e Ma x im u m Ra t in g s

Ra t in g s

Supply Voltage

S ym b o l

Va lu e

Un it

V

VDD

VIN

I

-0.3 to +7.0

Vss -0.3 to VDD +0.3

25

Input Voltage

Current Drain per Pin

(not including Vss or Vdd)

Operating Temperature

UR5HCFJ8-XX

mA

TA

T low to T high

-40 to +85

-65 to +150

°C

Storage Temperature Range

TSTG

Th e rm a l Ch a ra c t e ris t ic s

Ch a ra c t e ris t ic

Thermal Resistance

Plastic DIP

S ym b o l

TJA

Va lu e

Un it

°C per W

60

70

Plastic PLCC

DC Ele c t ric a l Ch a ra c t e ris t ic s (VDD=5.0 VDC +/-10%, VSS=0 VDC, Temperature range=T low to T high unless otherwise noted)

Ch a ra c t e ris t ic

Output Voltage (I load<10µA)

S ym b o l

VOL

VOH

VOL

VIH

VIL

IPP

VRM

Min

Typ

Ma x

0.1

Un it

V

VDD–0.1

VDD–0.8

Output High Voltage (I load=0.8mA)

Output Low Voltage (I load=1.6mA)

Input High Voltage

Input Low Voltage

User Mode Current

Data Retention Mode (0 to 70°C)

Supply Current* (Run)

I/O Ports Hi-Z Leakage Current

Input Current

V

mA

V

mA

µA

pF

0.4

VDD

0.2xVDD

10

0.7xVDD

Vss

5

2.0

IDD

4.7

7.0

IIL

IIN

CIO

+/-10

+/- 1

12

I/O Port Capacitance

8

*In a typical application circuit, including external A/D.

Co n t ro l Tim in g (VDD=5.0 VDC +/-10%, VSS=0 VDC, Temperature range=T low to T high unless otherwise noted)

Ch a ra c t e ris t ic

S ym b o l

Min

Ma x

Un it

Frequency of Operation

Crystal Option

External Clock Option

Crystal Oscillator Startup Time

Crystal (FOSC/2)

External Clock Option

Cycle Time

Crystal Oscillator Startup Time

Stop Recovery Startup Time

Reset Pulse Width

fOSC

MHz

2.0

dc

fOP

MHz

2.0

dc

1000

tCYC

toxov

tiLCH

tRL

tLIH

tiLIL

ns

100

ms

tcyc

ns

tcyc

ns

8

125

*

Interrupt Pulse Width Low

Interrupt Pulse Period

OSC1Pulse Width

t

OH

,

TOL

90

*The minimum period tiLIL should not be less than the number of cycle times it takes to execute the interrupt service routine plus 21 tcyc.

DOC5-FJ8-DS-107

www.semtech.com

1 4

UR5HCFJ8 BILL OF MATERIALS FOR PAGE 10 SCHEMATIC

UR7 HCFJ 8 -XX BOM

De s c rip t io n

Ba re P CB

PCB

Qu a n t it y

Ma n u fa c t u re r

P a rt #

De s c rip t io n

1

PCB5-FJ8-100

PCB for UR5EVB. Thru Hole

Ca p a c it o rs :

C1, C2

C3, C4

C5, C7

C6

C8, C9, C10, C11

ICs :

U1

2

1

4

Generic

Any

.1uF Ceramic disk or Monolythic cap, THD

22pF, Ceramic disk cap, THD

.01uF Ceramic disk cap, THD

10uF, 16V Tantalum Cap, THD

47pF Ceramic disk cap, THD

1

Semtech

UR7HCFJ8

LapCoder^TM

Co n n e c t o rs :

J1

J2

J5

J6

1

2

Molex

AMP

39-51-3144

39-51-3084

640456-5

640456-6

103322-3

14 pos, ZIF Conn, Straight

8 pos ZIF Conn, Straight

5 positions .1”ST/Header

6 positions .1”ST/HeaderJP1, JP2

Header, 2x3 positions, 1”

Male Str Header 1x2 pos

JP1-JP2

E1, E2

S.E.

PH1-025-2G

Dio d e :

D1-D8

LED:

8

3

Generic

Any

Diode, small signal, THD, DO-35

J4

King Bright

L113GDT

Rect LED, cross to SSL-LX2573GD, THD

Re s is t o rs :

R1, R6, R7

R2, R3, R4

R5

R8, R9

R10, R11

R12

3

1

2

1

4

1

Generic

Any

1M Resistor, Carbon Film, THD

330 Ohm Resistor, Carbon Film

1M Resistor, Carbon Film

4.7K Resistor, Carbon Film, THD

2K Resistor, Carbon Film, THD

100K Resistor, Carbon Film, THD

47 Ohm Resistor, Carbon Film, THD

22K Resistor, Carbon Fil, THD

R13-R16

R20

Re s is t o r Ne t :

RP1, RP2, RP3

RP4

3

1

CTS

KOA

761-3-332G

RKC82223G

3.3K, 8 Resistor, 16 pins, THD, DIP

22K, 8 Resistor, 9 pins, THD, SIP

Crys t a l:

Y1

S h u n t s :

E1-S, JP1-S, JP2-S 3

S o c k e t :

1

ECS

EC2-040-4.00

MJ-254M

4.00MHz Low Profile Crystal, THD

Standard Gold 2 Position Jumper

44PLCC THD Socket

Solid Electronics

McKenzie

U1_S

1

PLCC44P-T

No t e s : J3 not installed. Install shunts as follow: JP1, JP2 between pins 2 & 3; also installs in E1

Updated 2000/08/01

DOC5-FJ8-DS-107

www.semtech.com

1 5

Fo r s a le s in fo rm a t io n

a n d p ro d u c t lit e ra t u re ,

c o n t a c t :

HID & System Mgmt Division

Semtech Corporation

568 Broadway

New York, NY 10012

h id in fo @s e m t e c h .c o m

h t t p ://w w w .s e m t e c h .c o m

212 226 2042 Telephone

212 226 3215 Telefax

Semtech Western Regional Sales

805-498-2111 Telephone

805-498-3804 Telefax

Semtech Central Regional Sales

972-437-0380 Telephone

972-437-0381 Telefax

Semtech Eastern Regional Sales

203-964-1766 Telephone

203-964-1755 Telefax

Semtech Asia-Pacific Sales Office

+886-2-2748-3380 Telephone

+886-2-2748-3390 Telefax

Semtech Japan Sales Office

+81-45-948-5925 Telephone

+81-45-948-5930 Telefax

Semtech Korea Sales Sales

+82-2-527-4377 Telephone

+82-2-527-4376 Telefax

Northern European Sales Office

+44 (0)2380-769008 Telephone

+44 (0)2380-768612 Telefax

Southern European Sales Office

+33 (0)1 69-28-22-00 Telephone

+33 (0)1 69-28-12-98 Telefax

Central European Sales Office

+49 (0)8161 140 123 Telephone

+49 (0)8161 140 124 Telefax

KeyCoder, LapCoder, Zero-Power and Self-Power Management are

trademarks of Semtech Corporation. Semtech is a registered

trademark of Semtech Company. All other trademarks belong to

their respective companies.

INTELLECTUAL PROPERTY DISCLAIMER

This specification is provided "as is" with no warranties whatsoever

including any warranty of merchantability, fitness for any particular

purpose, or any warranty otherwise arising out of any proposal,

specification or sample. A license is hereby granted to reproduce

and distribute this specification for internal use only. No other

license, expressed or implied to any other intellectual property

rights is granted or intended hereby. Authors of this specification

disclaim any liability, including liability for infringement of proprietary

rights, relating to the implementation of information in this

specification. Authors of this specification also do not warrant or

represent that such implementation(s) will not infringe such rights.

DOC5-FJ8-DS-107

www.semtech.com

1 6


型号：	UR5HCFJ8
厂家：	SEMTECH CORPORATION
描述：	Low-Power Keyboard Encoder for Portable Systems 低功耗键盘编码器用于便携式系统编码器便携式
文件：	总16页 (文件大小：197K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

UR5HCFJ8 [SEMTECH]

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