EP9302-CQZ Cirrus Logic Inc, EP9302-CQZ Datasheet - Page 747

• Manufacturer Part Number: EP9302-CQZ
• Description: IC ARM9 SOC PROCESSOR 208LQFP
• Manufacturer: Cirrus Logic Inc
• Series: EP9r

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, I&sup2: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

DS785UM1
WAIT FOR TOUCH PRESS
SETTLING TIME FOR KEY
PRESET SETTLING TIME
MAX,MIN,AND AVERAGE
DISCHARGE ALL FOR
DELAY FOR PRESET
APPLY VOLTAGE TO
SAMPLES STORING
TAKE 4,8,16,OR 32
SETTLING TIME
SCAN X-AXIS
DETECTION
START
X-AXIS
Figure 25-4. Analog Resistive Touch Screen Scan Flow Chart
ABS(X-XLAST) LESS
X INT PENDING?
SET X INT PENDING
GREATER THAN
ABS(MAX-MIN)
ABS(X-XLAST)
LESS THAN X
THAN XMIN?
DEVIATION
or DEVTMR
XMAX?
XLAST = X
carry?
Y
N
N
Y
Copyright 2007 Cirrus Logic
Y
Y
N
N
N
ABS(Y-YLAST) LESS
Y INT PENDING?
SET Y INT PENDING
GREATER THAN
ABS(MAX-MIN)
ABS(Y-YLAST)
LESS THAN Y
THAN YMIN?
DEVIATION
or DEVTMR
YLAST = Y
YMAX?
carry?
Y
N
N
Y
Analog Touch Screen Interface
Y
Y
SET INTERRUPT
N
YLAST = Y
PRESET SETTLING TIME
MAX,MIN,AND AVERAGE
SET X INT PENDING
DISCHARGE ALL FOR
APPLY VOLTAGE TO
DELAY FOR PRESET
SAMPLES STORING
TAKE 4,8,16,OR 32
EP93xx User’s Guide
SETTLING TIME
XLAST = X
SCAN Y-AXIS
Y-AXIS
X INT PENDING?
N
25-9
Y
25