EP9302-CQZ Cirrus Logic Inc, EP9302-CQZ Datasheet - Page 765
![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
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
EP9302-CQZ
Manufacturer:
Cirrus
Quantity:
3 295
Company:
Part Number:
EP9302-CQZ
Manufacturer:
ALTERA
Quantity:
672
Part Number:
EP9302-CQZ
Manufacturer:
CYPRESS/赛普拉斯
Quantity:
20 000
- EP9307-CRZ PDF datasheet
- EP9302-IQZ PDF datasheet #2
- EP9302-IQZ PDF datasheet #3
- EP9302-IQZ PDF datasheet #4
- Current page: 765 of 824
- Download datasheet (13Mb)
DS785UM1
26.2.1 Apparent Key Detection
When more than two keys are pressed, the key array controller may detect “apparent” keys.
An apparent key detection is caused by misinterpreting the basic electrical signals. For
example, in
The controller’s instruction is to decode the two keys with the lowest addresses. Therefore
the system interprets the electrical signals as:
• (ROW0, COL3) with address 0x03
• (ROW3, COL0) with address 0x18
• (ROW3, COL3) with address 0x1B
• An apparent key address of 0x00 at (ROW0, COL0)]
• An actual key address of 0x03 at (ROW0, COL3)
• No press for address 0x18 at (ROW3, COL0)
ROW 1
ROW 5
ROW 0
ROW 2
ROW 3
ROW 4
ROW 6
ROW 7
Figure
KEY 00H
KEY 20H
KEY 08H
KEY 10H
KEY 28H
KEY 30H
KEY 18H
KEY 38H
COL 0
26-3, three keys are pressed:
KEY 01H
KEY 09H
KEY 11H
KEY 21H
KEY 29H
KEY 31H
KEY 19H
KEY 39H
COL 1
Figure 26-2. 8 x 8 Key Array Diagram
Copyright 2007 Cirrus Logic
KEY 02H
KEY 0AH
KEY 22H
KEY 2AH
KEY 12H
KEY 1AH
KEY 32H
KEY 3AH
COL 2
KEY 03H
KEY 0BH
KEY 13H
KEY 1BH
KEY 23H
KEY 2BH
KEY 33H
KEY 3BH
COL 3
KEY 04H
KEY 0CH
KEY 14H
KEY 1CH
KEY 24H
KEY 2CH
KEY 34H
KEY 3CH
COL 4
COL 5
KEY 05H
KEY 0DH
KEY 25H
KEY 2DH
KEY 15H
KEY 1DH
KEY 35H
KEY 3DH
KEY 06H
KEY 0EH
KEY 16H
KEY 26H
KEY 2EH
KEY 36H
KEY 1EH
KEY 3EH
COL 6
EP93xx User’s Guide
Keypad Interface
COL 7
KEY 07H
KEY 27H
KEY 1FH
KEY 17H
KEY 2FH
KEY 37H
KEY 1FH
KEY 3FH
26-3
26
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