Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

ADP5589ACBZ-02-R7 Datasheet(PDF) 11 Page - Analog Devices

Part # ADP5589ACBZ-02-R7
Description  Keypad Decoder and I/O Expansion
Download  52 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP5589ACBZ-02-R7 Datasheet(HTML) 11 Page - Analog Devices

Back Button ADP5589ACBZ-02-R7 Datasheet HTML 7Page - Analog Devices ADP5589ACBZ-02-R7 Datasheet HTML 8Page - Analog Devices ADP5589ACBZ-02-R7 Datasheet HTML 9Page - Analog Devices ADP5589ACBZ-02-R7 Datasheet HTML 10Page - Analog Devices ADP5589ACBZ-02-R7 Datasheet HTML 11Page - Analog Devices ADP5589ACBZ-02-R7 Datasheet HTML 12Page - Analog Devices ADP5589ACBZ-02-R7 Datasheet HTML 13Page - Analog Devices ADP5589ACBZ-02-R7 Datasheet HTML 14Page - Analog Devices ADP5589ACBZ-02-R7 Datasheet HTML 15Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 52 page
background image
Data Sheet
ADP5589
Rev. B | Page 11 of 52
LOGIC EVENT
56
789
10
11
4
3
2
1
16
17
18
19
20
21
22
15
14
13
12
27
28
29
30
31
32
33
26
25
24
23
38
39
40
41
42
43
44
37
36
35
34
49
50
51
52
53
54
55
48
47
46
45
60
61
62
63
64
65
66
59
58
57
56
71
72
73
74
75
76
77
70
69
68
67
82
83
84
85
86
87
88
81
80
79
78
FIFO
UPDATE
KEY SCAN
CONTROL
I/O CONFIGURATION
KEY EVENT
GPI EVENT
I2C BUSY?
R0
R3
R1 R2
R4
R7
R5 R6
C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10
COLUMN
SINK ON/OFF
PIN_CONFIG_A[7:0]
PIN_CONFIG_B[7:0]
ROW
SENSE
FIFO
PIN_CONFIG_C[2:0]
UNLOCK1[7:0]
UNLOCK2[7:0]
EXT_LOCK_EVENT[7:0]
UNLOCK_TIMER[2:0]
INT_MASK_TIMER[4:0]
LOCK_EN
LOCK_STAT
EVENT_INT
OVRFLOW_INT
LOCK_INT
EC[4:0]
RESET_TRIGGER_TIME[2:0]
RESET1_EVENT_A[7:0]
RESET1_EVENT_B[7:0]
RESET1_EVENT_C[7:0]
89
91
96
95
94
90
93
92
RESET2_EVENT_A[7:0]
RESET2_EVENT_B[7:0]
RESET 1_INITIATE
RESET 2_INITIATE
Figure 11. Detailed Key Scan Block
Use Registers PIN_CONFIG_A[7:0] (0x49),
PIN_CONFIG_B[7:0] (0x4A), and PIN_CONFIG_C[2:0]
(0x4B) to configure I/Os for keypad decoding. The number
label on each key switch represents the event identifier that
is recorded if that switch is pressed. If all row/column pins
are configured, it is possible to observe all 88 key identifiers on
the FIFO.
If a smaller 3 × 3 matrix is configured, for example, using the
C5, C6, and C7 column pins and the R1, R2, and R3 row pins,
only the nine event identifiers (17, 18, 19, 28, 29, 30, 39, 40,
and 41) can possibly be observed on the FIFO, as shown in
Figure 11.
By default, the ADP5589 records key presses and releases on the
FIFO. Figure 12 illustrates what happens when a single key is
pressed and released. Initially, the key scanner is idle. When
Key 32 is pressed, the scanner begins scanning through all
configured row/column pairs. After the scan wait time, the
scanner again scans through all configured row/column pairs
and detects that Key 32 has remained pressed, which sets the
EVENT_INT interrupt. The event counter, EC[4:0], is incre-
mented to 1, EVENT1[7:0] of the FIFO is updated with its event
identifier set to 32, and its Event1_State bit is set to 1, indicating
a press.
KEY 32
KEY 32 PRESS
KEY 32 RELEASE
KEY SCAN
EVENT_INT
EC[4:0]
FIFO
1
2
1
0
0
0
32
32
0
0
Figure 12. Press and Release Event
The key scanner continues the scan/wait cycles while the key
remains pressed. If the scanner detects that the key has been
released for two consecutive scan cycles, the event counter
EC[4:0] is incremented to 2, and EVENT2[7:0] of the FIFO is
updated with its event identifier set to 32. Its Event2_State bit is
set to 0, indicating a release. The key scanner goes back to idle
mode because no other keys are pressed.
The EVENT_INT interrupt can be triggered by both press and
release key events. As shown in Figure 13, if Key 32 is pressed,
EVENT_INT is asserted, EC[4:0] is updated, and the FIFO is
updated. During the time that the key is still pressed, it is
possible for the FIFO to be read, the event counter decremented
to 0, and EVENT_INT cleared. When the key is finally released,
EVENT_INT is asserted, the event counter incremented, and
the FIFO updated with the release event information.


Similar Part No. - ADP5589ACBZ-02-R7

ManufacturerPart #DatasheetDescription
logo
Analog Devices
ADP5589ACBZ-02-R7 AD-ADP5589ACBZ-02-R7 Datasheet
644Kb / 52P
   Keypad Decoder and I/O Expansion
Rev. B
More results

Similar Description - ADP5589ACBZ-02-R7

ManufacturerPart #DatasheetDescription
logo
Analog Devices
ADP5585 AD-ADP5585_V01 Datasheet
605Kb / 40P
   Keypad Decoder and I/O Expansion
Rev. C
ADP5585ACPZ-00-R7 AD-ADP5585ACPZ-00-R7 Datasheet
605Kb / 40P
   Keypad Decoder and I/O Expansion
REV. C
ADP5589 AD-ADP5589 Datasheet
644Kb / 52P
   Keypad Decoder and I/O Expansion
Rev. B
ADP5585 AD-ADP5585 Datasheet
83Kb / 2P
   Keypad Decoder and I/O Expansion GPIO functions GPIO functions
Rev. Sp0
ADP5586 AD-ADP5586 Datasheet
612Kb / 44P
   Keypad Decoder and I/O Port Expander
REV. 0
logo
National Semiconductor ...
LM8333 NSC-LM8333 Datasheet
777Kb / 17P
   Keypad Controller with I/O Expansion and ACCESS.bus Host Interface
logo
Analog Devices
ADP5588 AD-ADP5588 Datasheet
522Kb / 28P
   Keypad I/O Expander
REV. A
ADP5587 AD-ADP5587_1 Datasheet
347Kb / 24P
   Mobile I/O Expander and QWERTY Keypad Controller
REV. B
logo
List of Unclassifed Man...
VL-SPX-1 ETC2-VL-SPX-1 Datasheet
457Kb / 2P
   Simplified I/O Expansion
logo
Analog Devices
ADP5587 AD-ADP5587 Datasheet
340Kb / 24P
   Mobile I/O Expander and QWERTY Keypad Controller
REV. 0
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com