收藏本站
Evaluation Kit Hardware
4.3.8.3
Touch Screen Interface
The LCD module integrates a 4-wire touch panel controlled by MN7 (ADS7843) which is a slave device
on the SAM3S SPI bus. The controller sends back the information about the X and Y positions, as well
as a measurement for the pressure applied to the touch panel. The touch panel can be used with either
a stylus or a finger.
The ADS7843 touch panel controller connects to the SPI0 interface via the NPCS0 control signal. Two
interrupt signals are connected and provide events information back to the microcontroller: PenIrq and
Busy.
Note:
PenIrq (PA16) is shared with ZigBEE signal IRQ0.
Busy (PA17) is shared with ZigBEE signal IRQ1.
Therefore, if using a ZigBEE interface in concurrence with the TouchScreen controller, take
care not to have both drivers enabled at the same time on either PA16 or PA17.
For that purpose, 0 Ohm resistors have been implemented on these PIO lines in order to disconnect
either end driver from the other:
On the touch panel controller side, R67 and R69.
On ZigBEE side, R117 and R120.
for further information, refer to the “Schematics” section.
Touch ADC auxiliary inputs IN3/IN4 of the ADS7843 are connected to test point (TP8, TP9) for optional
function extension.
Figure 4-10. Touch Panel Control
+ 3 V 3
MN7
AD S 7 8 4 3 E
R62
100K
+ 3 V 3
X_RIGHT
Y_UP
X_LEFT
Y_DOW N
2
3
4
5
XP
YP
XM
YM
DCLK
DIN
DOUT
C S
16
14
12
15
PA14
PA1 3
PA12
R66
0R
PA11
R65
100K
TP 8
S MD
TP9
S MD
BU S Y
PENIRQ
1 3
11
R67
0R
PA17
R69
0R
PA16
+ 3 V 3
4.7 u F
R72
100K
R7 3
100K
7
8
IN 3
IN4
VREF
VCC1
VCC2
GND
9
1
10
6
R70
C5 8
100nF
0R
C59
100nF
C60
100nF
R71
1R
C61
L2
10 u H/100mA
R74
0R
4.3.9
JTAG/ICE
AGND_TP
AGND_TP
DGND
A standard 20-pin JTAG/ICE connector is implemented on the SAM3S-EK for the connection of a com-
patible ARM JTAG emulator interface, such as the SAM-ICE from Segger.
Notes: 1. The NRST signal is connected to BP1 system button and is also used to reset the LCD
module. The 0 ohm resistor R44 may be removed in order to isolate the JTAG port from
this system reset signal.
2. The TDO pin is in input mode with the pull-up resistor disabled when the Cortex M3 is
not in debug mode. To avoid current consumption on VDDIO and/or VDDCORE due to
floating input, the internal pull-up resistor corresponding to this PIO line must be
enabled.
4-8
11031C–ATARM–30-Mar-11
SAM3S-EK Development Board User Guide
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
ATSAM3X-EK EVAL KIT FOR SAM3X & SAM3A
ATSTK500 PROGRAMMER AVR STARTER KIT
ATSTK526 KIT STARTER FOR AT90USB82/162
ATSTK600 DEV KIT FOR AVR/AVR32
ATXMEGAB1-XPLD KIT EVAL FOR ATXMEGAB1
AUIR2085S IC DVR HALF-BRDG SELF OSC 8SOIC
AUIRS2003S IC DRVIER HALF-BRIDGE 8SOIC
AUIRS2004S IC DRVIER HALF-BRIDGE 8SOIC
相关代理商/技术参数
ATSAM3S-EK2 功能描述:开发板和工具包 - ARM EVAL KIT SAM3S8 & SAM3SD8 series RoHS:否 制造商:Arduino 产品:Development Boards 工具用于评估:ATSAM3X8EA-AU 核心:ARM Cortex M3 接口类型:DAC, ICSP, JTAG, UART, USB 工作电源电压:3.3 V
ATSAM3U 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:AT91 ARM Thumb-based Microcontrollers
ATSAM3U_10 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:AT91ARM Cortex M3-based Microcontrollers
ATSAM3U1CA-AU 功能描述:ARM微控制器 - MCU 64K Flash, 20K SRAM 32-bit ARM Cortex M3 RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT
ATSAM3U1CA-CU 功能描述:ARM微控制器 - MCU 64K Flash, 20K SRAM 32-bit ARM Cortex M3 RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT
ATSAM3U1CB-AU 功能描述:ARM微控制器 - MCU LQFP, Grn, IT, MRL B RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT
ATSAM3U1CB-CU 功能描述:ARM微控制器 - MCU TFBGA, Grn, IT MRL B RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT
ATSAM3U1EA-AU 功能描述:ARM微控制器 - MCU 64K Flash, 20K SRAM 32-bit ARM Cortex M3 RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT