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UR5HCFJ8-FB の電気的特性と機能

UR5HCFJ8-FBのメーカーはSemtech Corporationです、この部品の機能は「Low-Power Keyboard Encoder for Portable Systems」です。


製品の詳細 ( Datasheet PDF )

部品番号 UR5HCFJ8-FB
部品説明 Low-Power Keyboard Encoder for Portable Systems
メーカ Semtech Corporation
ロゴ Semtech Corporation ロゴ 




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UR5HCFJ8-FB Datasheet, UR5HCFJ8-FB PDF,ピン配置, 機能
LapCoderTM UR5HCFJ8
Low-Power Keyboard
Encoder for Portable Systems
HID & SYSTEM MANAGEMENT PRODUCTS, KEYCODERTM FAMILY
DESCRIPTION
The LapCoderTM is 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.
FEATURES
• Interfaces the Fujitsu FKB7211 or
other similar laptop/notebook
keyboards to a BIOS-compatible
systems
• AT / PS/2-compatible
• Interfaces an external keyboard /
keypad or other 8042-compatible
devices
• 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
The UR5HCFJ8 fully supports the
IBM standard keyboard
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.
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
multiplexed and presented to the
system as if it were coming from a
single source.
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.
APPLICATIONS
• Laptop/Notebook
• Portable Equipment
• Industrial Keyboards
PIN DESCRIPTIONS
• POS Terminals
• Public Information Kiosks
6
_RESET
_IRQ
VX
NL
R6
RP
KD
1
2
3
4
5
6
7
RP 7
KD
KC
40 VCC
EKC
EKD
39 OSCI
CL 12
38 OSCO C0
37 EKC1
36 R7
35 SL
34 R5
C1
C2
C3
C4 17
18
KC 8
33 R4
EKC
EKD
CL
9
10
11
32 R3
DIP 31 R2
30 R1
C0 12
29 R0
C1 13
C2 14
C3 15
C4 16
C5 17
C6 18
C7 19
VSS 20
28 C8
27 C9
26 C10
25 C11
24 C12
23 C13
22 C14
21 C15
R6
RP
KD
KC
EKC
EKD
CL
C0
C1
C2
C3
1
PLCC
23
40
39 R7
SL
R5
R4
R3
34 R2
R1
R0
C8
C9
29 C10
28
QFP
SL
R5
R4
R3
R2
R1
R0
C8
C9
C10
C11
LapCoder is a trademark of Semtech Corp. All
other trademarks belong to their respective
companies.
Copyright Semtech, 1997-2001
DOC5-FJ8-DS-107
1
www.semtech.com

1 Page





UR5HCFJ8-FB pdf, ピン配列
FUNCTIONAL DESCRIPTION
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
sections communicate with each
other and operate concurrently.
KEYBOARD ENCODER
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
unused row lines are pulled to Vcc.
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.
PIN DEFINITIONS
Mnemonic
VCC
VSS
OSCI
OSCO
_RESET
EKC1
DIP PLCC
40 44
20 22
39 43
38 42
11
37 41
VX
VXA
RP
KC
KD
EKD
ECK
_IQR
R0-R5
R6
R7
C0-C7
C8-C15
CL
NL
SL
NC
34
3
67
89
78
10 11
9 10
22
29-34
5
36
12-19
28-21
32-37
6
39
13-17
19-21
31-24
11 12
45
35 38
18
23,40
QFP
38
17
37
36
41
35
43
2
4
3
6
5
42
27-32
1
34
8-15
26-23
21-18
7
44
33
16,22
39,40
Type
I
I
I
O
I
I
I
I
I/O
I/O
I/O
I/O
I
I
I
I
O
O
O
O
O
O
O
Name and Function
Power Supply: +5V
Ground
Oscillator input
Oscillator output
Reset: Apply 0V to provide orderly start-up
External Keyboard Clock 1: Connects
to external keyboard Clock Line and is used
to generate an interupt for every Clock Line
transition.
Tie to Vcc
Tie to Vcc
Reserved: Ties to Vcc
Keyboard Clock: Connects to PC
keyboard port clock line
Keyboard Data: Connects to
PC port data line
External Keyboard Data: Connects to
external keyboard Data Lne
External Keyboard Clock: Connects
to external keyboard Clock Line
Interrupt Line: Reserved for low-power
applications
Row Data Inputs
Column Select Outputs: Selects 1 of
16 columns
Caps Lock LED
Num Lock LED
Scroll Lock LED
No Connects: These pins are unused.
Note: An underscore before a pin mnemonic denotes an active low signal.
Switch Matrix Encoding
Each matrix location is programmed
to represent either a single key or a
key combination of the IBM 101/102
standard keyboard.
Scan Code Table Sets
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
3
www.semtech.com


3Pages


UR5HCFJ8-FB 電子部品, 半導体
KEY MAP FOR FKB7211 (UR5HCFJ8)
0
LCtrl*
1
Esc
F1*
1
F2
2
F4
F3
Q
23
Tab Fn
Z
CapLk
A
3
F5
%
5
W
4
LAlt*
Columns (C0–C13)
5678
Space
` (BkQt) Insert
9 10
Delete ArrLft
11
ArrDn
12
LShift
13
ArrRt
XC
. (per) /
ArrUp RShift End
Pad . Pad /
V B N M , (com) , (appos) Enter
PgDn
Pad 0
S DF J KL ;
PgUp
Pad 1 Pad 2 Pad 3 Pad +
4 T Y UI
OP
BkSpc
Pad 4 Pad 5 Pad 6 Pad -
F6 F7 F8 F9 F10 NumLk ScrLk
PrtScr
6 7 8 9 0 - (dash) =
Pad 7 Pad 8 Pad 9 Pad *
E R GH[ ] \
Pause
Home
Copyright Semtech, 1997-2001
DOC5-FJ8-DS-107
6
www.semtech.com

6 Page



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部品番号部品説明メーカ
UR5HCFJ8-FB

Low-Power Keyboard Encoder for Portable Systems

Semtech Corporation
Semtech Corporation
UR5HCFJ8-FN

Low-Power Keyboard Encoder for Portable Systems

Semtech Corporation
Semtech Corporation


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