參數資料
型號: ADP5587CP-EVALZ
廠商: Analog Devices Inc
文件頁數: 14/24頁
文件大?。?/td> 0K
描述: EVAL BOARD FOR ADP5587
標準包裝: 1
主要目的: 接口,GPIO 擴展器
嵌入式:
已用 IC / 零件: ADP5587
主要屬性: 8 位 18 端口 GPIO 擴展器
次要屬性: I²C 接口
已供物品:
相關產品: ADP5587ACBZ-R7DKR-ND - IC I/O EXPANDER/KEYBRD CTRLR
ADP5587ACBZ-R7CT-ND - IC I/O EXPANDER/KEYBRD CTRLR
ADP5587ACBZ-R7TR-ND - IC I/O EXPANDER/KEYBRD CTRLR
ADP5587ACPZ-R7DKR-ND - IC EXPANDER/KEYBOARD CTRLR
ADP5587ACPZ-R7CT-ND - IC EXPANDER/KEYBOARD CTRLR
ADP5587ACPZ-R7TR-ND - IC EXPANDER/KEYBOARD CTRLR
Data Sheet
ADP5587
Rev. D | Page 21 of 24
APPLICATIONS INFORMATION
CONTROL
REGISTERS
HOST
PROCESSOR
CONTROL
INTERFACE
R7
R6
R5
R4
R3
R2
R1
R0
C0
C1
C2
C3
C4
C5
C6
C7
C9
C8
ENABLE 2 (GPO)
BACKLIGHT
ENABLE (GPO)
A0
A1
A2
A3
A4
A5
A6
A7
B0
B1
B2
B3
B4
B5
B6
B7
C0
C1
C2
C3
C4
C5
C6
C7
D0
D1
D2
D3
D4
D5
D6
D7
E0
E1
E2
E3
E4
E5
E6
E7
F0
F1
F2
F3
F4
F5
F6
F7
G0
G1
G2
G3
G4
G5
G6
G7
H0
H1
H2
H3
H4
H5
H6
H7
I0
I1
I2
I3
I4
I5
I6
I7
J0
J1
J2
J3
J4
J5
J6
J7
SCL
SDA
VCC
GND
VCC
SCL
GPI1
GPI2
SDA
RST
INT
19
21
23
22
18
17
20
24
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
VCC
BACKLIGHT
DRIVER
PWM OUTPUT
ADP5587
VCC
RST
INT
08612-
015
Figure 19. ADP5587 Detailed Application Block Diagram
APPLICATIONS OVERVIEW
The ADP5587 is designed to complement host processors in
a variety of ways. Its versatility makes it the ideal solution for
mobile platforms that require extended keypads and GPIO
expanders. The programmable registers give the designer the
flexibility to configure any or all of its GPIOs in a variety of
ways. Figure 19 shows a detailed application diagram.
KEYPAD CURRENT
Keypad current drain varies based on how many keys and how
many rows and columns are pressed during multiple key
presses. Table 34 shows the typical current drain for a single key
press and for two key presses.
Table 34. Typical Current Drain
Number of Key Presses
Conditions1
Typical
Unit
1
VCC = 1.8 V to 3.0 V
55
μA
2
VCC = 1.8 V to 3.0 V
100
μA
1
TA = TJ = 40°C to +85°C.
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