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Description: 本设计以ATMEL公司生产的AT90S8515作为控制核心，实现输出电流的数字控制，巧妙地利用4通道8位D/A转换芯MAX505转换芯片来完成16位的转换精度，D/A转换芯片输出的电压量经过一个压流变换电路变换成电流量的输出。再通过12位A/D转换芯片MAX197实现输出数据的反馈采集，形成输出电流的闭环控制，以此来达到较高的控制精度。-design ATMEL the company's core AT90S8515 as the control, Implementation of output current digital control, clever use of a 4-channel 8-bit D / A converter chip core MAX505 conversion to complete 16 of conversion accuracy, D / A converter output voltage chip volume flow through a pressure converter transform into CURRENT output. Again through 12-bit A / D converter chip MAX197 feedback output data collection, output current form of closed-loop control, in order to achieve higher accuracy.
Platform: |
Size: 122960 |
Author: 刘涛 |
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Description: TG19264A接口程序（AVR模拟方式）
连线图
连线图:
LCM------S8515* *LCM----S8515* *LCM-------S8515* *LCM------S8515* *
*DB0-------PA0* *DB4-----PA4* *D/I--------PC6* *CS1-------PC5* *
*DB1-------PA1* *DB5-----PA5* *R/W--------PC7* *CS2-------PC4* *
*DB2-------PA2* *DB6-----PA6* */RST-------VCC* *CS3-------PD2* *
*DB3-------PA3* *DB7-----PA7* *E----------PC3* *
注:AT90S8515的晶振频率为8MHz
Platform: |
Size: 6858 |
Author: ljhy |
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Description: 本设计以ATMEL公司生产的AT90S8515作为控制核心，实现输出电流的数字控制，巧妙地利用4通道8位D/A转换芯MAX505转换芯片来完成16位的转换精度，D/A转换芯片输出的电压量经过一个压流变换电路变换成电流量的输出。再通过12位A/D转换芯片MAX197实现输出数据的反馈采集，形成输出电流的闭环控制，以此来达到较高的控制精度。-design ATMEL the company's core AT90S8515 as the control, Implementation of output current digital control, clever use of a 4-channel 8-bit D/A converter chip core MAX505 conversion to complete 16 of conversion accuracy, D/A converter output voltage chip volume flow through a pressure converter transform into CURRENT output. Again through 12-bit A/D converter chip MAX197 feedback output data collection, output current form of closed-loop control, in order to achieve higher accuracy.
Platform: |
Size: 122880 |
Author: |
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Description: TG19264A接口程序（AVR模拟方式）
连线图
连线图:
LCM------S8515* *LCM----S8515* *LCM-------S8515* *LCM------S8515* *
*DB0-------PA0* *DB4-----PA4* *D/I--------PC6* *CS1-------PC5* *
*DB1-------PA1* *DB5-----PA5* *R/W--------PC7* *CS2-------PC4* *
*DB2-------PA2* *DB6-----PA6* */RST-------VCC* *CS3-------PD2* *
*DB3-------PA3* *DB7-----PA7* *E----------PC3* *
注:AT90S8515的晶振频率为8MHz-TG19264A interface program (AVR analog) connection diagram connection diagram: LCM------ S8515** LCM---- S8515** LCM------- S8515** LCM------S8515*** DB0------- PA0** DB4----- PA4** D/I--------PC6** CS1------- PC5*** DB1------- PA1** DB5----- PA5** R/W--------PC7** CS2------- PC4*** DB2------- PA2** DB6----- PA6**/RST------- VCC** CS3------- PD2*** DB3------- PA3** DB7----- PA7** E---------- PC3** Note: AT90S8515 the crystal frequency of 8MHz
Platform: |
Size: 6144 |
Author: ljhy |
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Description: 很好的proteus应用实例，里面有原理图和pcb板，很好的范例 ，大家好好看看。-Proteus good example, which has schematic and pcb board, a very good example of a good look at everyone.
Platform: |
Size: 653312 |
Author: sdcsadf |
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Description: This example shows how external devices such as external SRAM and FLASH, and
peripherals such as LCD-display, A/D, and D/A can be access with the
External Memory Interface.
To enable the External Memory Interface, the SRE bit must be set in the
MCUCR register and optionally one or more wait states.
When the AT90S8515 is operated in the external SRAM mode, port A is used as
a multiplexed low-order address bus and data bus while port C is is used as
high order address bus.
In this example data is written to external memory location $4000 and read
back and output to LED connected to port B.
Note:
When using AVR Studio 4 for simulation, External Memory Interface must be
enabled using the menu Option
"Debug -> AVR Simulator Options -> Device Selection and select check box
"External Memory Interface"
Platform: |
Size: 1024 |
Author: abdulmajeed |
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