MK712RWLF Просмотр технического описания (PDF) - Integrated Device Technology
Номер в каталоге
Компоненты Описание
производитель
MK712RWLF Datasheet PDF : 21 Pages
| |||
MK712
TOUCH SCREEN CONTROLLER
TOUCH SCREEN CONTROL
Pin Descriptions
Pin
Number
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
Pin
Name
NC
INT
TOUCH
VDD
VDD
XH
XL
YH
YL
GND
GND
WR
RD
CS
A2
A1
A0
CLKIN
D7
D6
GND
VDD
D5
D4
D3
D2
D1
D0
Interrupts
Pin Type
Pin Description
—
Output
Output
Power
Power
Touch Screen Pin
Touch Screen Pin
Touch Screen Pin
Touch Screen Pin
Power
Power
Input
Input
Input
Input
Input
Input
Input
I/O
I/O
Power
Power
I/O
I/O
I/O
I/O
I/O
I/O
No connect. Do not connect this pin to anything.
Interrupt. Goes high to signal an interrupt. Cleared on next read.
Touch signal. Goes low when screen is touched. Goes high when not touched.
Power Supply. Connect to +5 V or +3.3 V. (Connect all VDDs to same voltage)
Power Supply. Connect to +3.3 V.
Connect to X-high on touch screen. (Right side)
Connect to X-low on touch screen. (Left side)
Connect to Y-high on touch screen. (Top)
Connect to Y-low on touch screen. (Bottom)
Connect to ground.
Connect to ground.
Write enable. Active low.
Read enable. Active low.
Chip select. Active low.
Register address 2.
Register address 1.
Register address 0.
Clock input. Typically 14.3 MHz. Best if driven by an ICS clock synthesizer.
Data bit 7.
Data bit 6.
Connect to ground.
Power Supply. Connect to +5 V or +3.3 V. (Connect all VDDs to same voltage)
Data bit 5.
Data bit 4.
Data bit 3.
Data bit 2.
Data bit 1.
Data bit 0.
Interrupts are controlled by register 6 (see Register Description). The INT pin (pin 2) goes high to signal an
interrupt. Interrupts are then cleared by reading any register. However, if the MK712 is in the process of generating
an interrupt during a read cycle, then the interrupt is not cleared and INT will stay high. This internal process may
take 100ns, and so to guarantee that the interrupt is cleared, two successive read cycles may be necessary.
IDT™ / ICS™ TOUCH SCREEN CONTROLLER
2
MK712
REV L 070805
Share Link: 