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参数资料
| 型号： | AT91EB40A |
| 厂商： | Atmel |
| 文件页数： | 18/40页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL FOR ARM AT91R40008 |
| 产品培训模块： | MCU Product Line Introduction |
| 标准包装： | 1 |
| 系列： | AT91SAM 智能 ARM |
| 类型： | MCU |
| 适用于相关产品： | AT91R40008 |
| 所含物品： | 评估板，线缆，电源插孔，CD-ROM |
| 相关产品： | AT91R40008-66AU-999-ND - IC MCU 32BIT RISC 100LQFP AT91R40008-66AU-ND - IC ARM7 MCU 100 LQFP AT91R4000866AISL3-ND - IC ARM MCU 16BIT 100TQFP AT91R40008-66AI-ND - IC ARM7 MCU 176 TQFP |
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same time (i.e., one as a boot memory and the other as data storage memory). In fact,
the position of CB11. See “Appendix A – Configuration Straps ” and Figure 6-8 in
“Appendix B – Schematics” .
4.4
4.5
4.5.1
4.5.2
4.6
4.6.1
4-2
Power and
Crystal Quartz
Push-buttons,
LEDs and Serial
Interfaces
Push-buttons and
LEDs
Serial Interface
Reset Circuit and
JTAG Interface
Reset Circuit
The system clock is derived from a single 66 MHz crystal oscillator. An external clock
can be input on the EB40A via the EBI connector on pin B4 - EBI_MCKI. See Figure 6-6
in “Appendix B – Schematics” .
The voltage regulator U9 provides 3.3V to VDDIO and to all other devices of the board.
The voltage regulator U11 provides 1.8V for VDDCORE of the AT91R40008.
Power can be applied via the 2.1mm connector to the regulator in either polarity
because of the diode-rectifying circuit.
Figure 6-3 in “Appendix B – Schematics” shows push buttons and LEDs. SW1, SW2,
SW3 and SW4 push buttons are debounced, buffered and connected to P12/FIQ,
P9/IRQ0, P1/TIOA0 and P2/TIOB0, respectively. The eight general-purpose LEDs are
connected to PIO (P15 to P19 and P3 to P6).
Two 9-way D-type connectors (P3/P4) are provided for serial port connection.
Serial port A (P3) is used primarily for Host PC communication and is a DB9 female con-
nector. TXD and RXD are swapped, so that a straight-through cable can be used. CTS
and RTS are connected together, as is DCD, DSR and DTR.
Serial port B (P4) is a DB9 male connector with TXD and RXD in conformance with the
standard RS-232 pinout. Apart from TXD, RXD and ground, the other pins are not
connected.
A MAX3223 device (U10) and associated bulk storage capacitors provide RS-232 level
conversion.
A supervisory circuit has been included in the design to detect and consequently reset
the board when the 3.3V supply voltage drops below 2.7V. Note that this voltage can be
changed depending on the board production series. The supervisory circuit also pro-
vides a debounced reset signal. This device also generates the reset signal in case of
watchdog timeout, as the pin NWDOVF of the AT91R40008 is connected on its input
/MR.
The assertion of this reset signal lights the red RESET LED (D10). By pressing the
CLEAR RESET push button (S2), the LED is turned off.
AT91EB40A Evaluation Board User Guide
2635C–ATARM–13-May-05
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| AT91EB42 | 功能描述:开发板和工具包 - ARM Eval Kit for AT91M42800A 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 |
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| AT91F40416-25CC | 功能描述:IC MCU 32BIT 2MB FLASH 120BGA 制造商:microchip technology 系列:AT91SAM 包装:托盘 零件状态:停產 核心处理器:ARM7? 核心尺寸:16/32-位 速度:25MHz 连接性:- 外设:- I/O 数:32 程序存储容量:2MB（1M x 16） 程序存储器类型:闪存 EEPROM 容量:- RAM 容量:4K x 8 电压 - 电源（Vcc/Vdd）:- 数据转换器:- 振荡器类型:外部 工作温度:0°C ~ 70°C 封装/外壳:120-LBGA 供应商器件封装:120-BGA（17x11） 基本零件编号:AT91F40416 标准包装:128 |
| AT91F40416-25CI | 功能描述:IC MCU 32BIT 2MB FLASH 120BGA 制造商:microchip technology 系列:AT91SAM 包装:托盘 零件状态:停產 核心处理器:ARM7? 核心尺寸:16/32-位 速度:25MHz 连接性:- 外设:- I/O 数:32 程序存储容量:2MB（1M x 16） 程序存储器类型:闪存 EEPROM 容量:- RAM 容量:4K x 8 电压 - 电源（Vcc/Vdd）:- 数据转换器:- 振荡器类型:外部 工作温度:-40°C ~ 85°C 封装/外壳:120-LBGA 供应商器件封装:120-BGA（17x11） 基本零件编号:AT91F40416 标准包装:128 |
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