EP9302-CQZ Cirrus Logic Inc, EP9302-CQZ Datasheet - Page 746
![IC ARM9 SOC PROCESSOR 208LQFP](/photos/12/23/122385/mfg_ep9302_parts_sml.jpg)
EP9302-CQZ
Manufacturer Part Number
EP9302-CQZ
Description
IC ARM9 SOC PROCESSOR 208LQFP
Manufacturer
Cirrus Logic Inc
Series
EP9r
Datasheets
1.EP9307-CRZ.pdf
(824 pages)
2.EP9302-IQZ.pdf
(42 pages)
3.EP9302-IQZ.pdf
(4 pages)
4.EP9302-IQZ.pdf
(40 pages)
Specifications of EP9302-CQZ
Program Memory Type
ROMless
Package / Case
208-LQFP
Core Processor
ARM9
Core Size
16/32-Bit
Speed
200MHz
Connectivity
EBI/EMI, Ethernet, I²C, IrDA, SPI, UART/USART, USB
Peripherals
AC'97, DMA, I²:S, LED, MaverickKey, POR, PWM, WDT
Number Of I /o
19
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 3.6 V
Data Converters
A/D 5x12b
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Processor Series
EP93xx
Core
ARM920T
Data Bus Width
32 bit
Data Ram Size
16 bit
Interface Type
USB, USART, SPI
Maximum Clock Frequency
200 MHz
Number Of Programmable I/os
37
Mounting Style
SMD/SMT
3rd Party Development Tools
MDK-ARM, RL-ARM, ULINK2
Development Tools By Supplier
EDB9302A-Z
Controller Family/series
(ARM9)
No. Of I/o's
19
Ram Memory Size
16MB
Cpu Speed
200MHz
No. Of Timers
4
Embedded Interface Type
AC97, I2S, SPI, UART, USB
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
598-1132 - KIT DEVELOPMENT EP9302 ARM9
Eeprom Size
-
Program Memory Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
598-1137
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
EP9302-CQZ
Manufacturer:
Cirrus
Quantity:
3 295
Company:
Part Number:
EP9302-CQZ
Manufacturer:
ALTERA
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20 000
- EP9307-CRZ PDF datasheet
- EP9302-IQZ PDF datasheet #2
- EP9302-IQZ PDF datasheet #3
- EP9302-IQZ PDF datasheet #4
- Current page: 746 of 824
- Download datasheet (13Mb)
25
25-8
Analog Touch Screen Interface
EP93xx User’s Guide
The difference between this new X value and the last valid X value is then compared against
the XMIN value stored in the TSXYMaxMin register (unless the X interrupt pending flag is
set). If the difference is less than this value no action is taken, and the algorithm continues by
discharging and scanning the Y-axis. If the difference between the new X value and the last X
value is greater than the XMIN value, the algorithm continues by comparing the difference
between the new X value and the last X value to the XMAX value in the TSXYMaxMin
register. If the difference is greater than XMAX, it is assumed that this distance is too far for a
touch input to possibly move in the short scan time interval and that the key press is invalid.
However, it is stored as the last recorded X location in case a truly new location is being
determined. The X move interrupt pending flag is also set at this point to cause the algorithm
to skip over the comparison to XMIN on consecutive sample sets. This flag will also cause a
ARM Core interrupt after valid X and Y samples have been established.
The algorithm then starts again, discharging and detecting a valid press. If the difference
between the new X value and the last stored X value is less than the XMAX value, the
algorithm stores the new X value, sets the X move interrupt pending flag and continues by
discharging and scanning a Y-axis value.
scanning process.
The Y-axis scan proceeds in the same fashion as the X-axis scan, except that the switch
matrix is now controlled by the TSYSample register. When the new Y value has been
calculated, the difference between this new Y value and the last valid Y value is then
compared against the YMIN value stored in the TSXYMaxMin register (unless the Y interrupt
pending flag is set). If the difference is less than this value, no Y action is taken and the
algorithm continues by checking the X interrupt pending flag. If this flag is set the Y value is
stored in the Y last register and the interrupt to the ARM Core is generated.
Copyright 2007 Cirrus Logic
Figure 25-4
is the flow chart demonstrating the
DS785UM1
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