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On-Chip

  • CAT93C46 器件數據手冊

    The CAT93C46 is a 1 kb Serial EEPROM memory device which isconfigured as either 64 registers of 16 bits (ORG pin at VCC) or 128registers of 8 bits (ORG pin at GND). Each register can be written (orread) serially by using the DI (or DO) pin. The CAT93C46 features aself−timed internal write with auto−clear. On−chip Power−On Resetcircuit protects the internal logic against powering up in the wrongstate.

    標簽: CAT 93C C46 93

    上傳時間: 2013-11-20

    上傳用戶:ynzfm

  • 第1章μPSD3200系列單片機概述

    單片機是單片微型計算機(SingleChipMicrocomputer)的簡稱,它的內部包含有計算機的基本功能部件:中央處理器(CPU)、存儲器、定時/計數器、各種串/并行I/O接口電路等。因此,單片機只需要和適當的軟件及外部設備相結合,便可成為一個單片機控制系統。近年來,由于半導體技術和工藝的快速發展,以及針對各行各業的實際應用需要,單片機的開發方面又出現了許多新的技術。SOC(System On Chip,片上系統)等名詞日益被人們所熟悉和關注。

    標簽: 3200 PSD 單片機概述

    上傳時間: 2013-10-10

    上傳用戶:zhang97080564

  • lpc2478完全使用手冊

    NXP Semiconductor designed the LPC2400 microcontrollers around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded Trace. The LPC2400 microcontrollers have 512 kB of On-Chip high-speedFlash memory. This Flash memory includes a special 128-bit wide memory interface andaccelerator architecture that enables the CPU to execute sequential instructions fromFlash memory at the maximum 72 MHz system clock rate. This feature is available onlyon the LPC2000 ARM Microcontroller family of products. The LPC2400 can execute both32-bit ARM and 16-bit Thumb instructions. Support for the two Instruction Sets meansEngineers can choose to optimize their application for either performance or code size atthe sub-routine level. When the core executes instructions in Thumb state it can reducecode size by more than 30 % with only a small loss in performance while executinginstructions in ARM state maximizes core performance.

    標簽: 2478 lpc 使用手冊

    上傳時間: 2013-11-15

    上傳用戶:zouxinwang

  • CAT28LV64-64Kb CMOS并行EEPROM數據手

    The CAT28LV64 is a low voltage, low power, CMOS Parallel EEPROM organized as 8K x 8−bits. It requires a simple interface for in−system programming. On−chip address and data latches, self−timed write cycle with auto−clear and VCC power up/down write protection eliminate additional timing and protection hardware. DATA Polling and Toggle status bit signal the start and end of the self−timed write cycle. Additionally, the CAT28LV64 features hardware and software write protection.

    標簽: EEPROM 64 CMOS CAT

    上傳時間: 2013-11-16

    上傳用戶:浩子GG

  • Clocking Options for Stellaris

    The main oscillator allows either a crystal or single-ended input clock signal. Cost-sensitiveapplications typically use an external crystal with the On-Chip oscillator circuit since it is the mostcost-effective solution. It is also possible to use the internal oscillator to clock the device after theboot process has completed.

    標簽: Stellaris Clocking Options for

    上傳時間: 2013-10-14

    上傳用戶:pol123

  • Emulating a synchronous serial

    The C500 microcontroller family usually provides only one On-Chip synchronous serialchannel (SSC). If a second SSC is required, an emulation of the missing interface mayhelp to avoid an external hardware solution with additional electronic components.The solution presented in this paper and in the attached source files emulates the mostimportant SSC functions by using optimized SW routines with a performance up to 25KBaud in Slave Mode with half duplex transmission and an overhead less than 60% atSAB C513 with 12 MHz. Due to the implementation in C this performance is not the limitof the chip. A pure implementation in assembler will result in a strong reduction of theCPU load and therefore increase the maximum speed of the interface. In addition,microcontrollers like the SAB C505 will speed up the interface by a factor of two becauseof an optimized architecture compared with the SAB C513.Moreover, this solution lays stress on using as few On-Chip hardware resources aspossible. A more excessive consumption of those resources will result in a highermaximum speed of the emulated interface.Due to the restricted performance of an 8 bit microcontroller a pin compatible solution isprovided only; the internal register based programming interface is replaced by a set ofsubroutine calls.The attached source files also contain a test shell, which demonstrates how to exchangeinformation between an On-Chip HW-SSC and the emulated SW-SSC via 5 external wiresin different operation modes. It is based on the SAB C513 (Siemens 8 bit microcontroller).A table with load measurements is presented to give an indication for the fraction of CPUperformance required by software for emulating the SSC.

    標簽: synchronous Emulating serial

    上傳時間: 2014-01-31

    上傳用戶:z1191176801

  • P90CL301 IIC驅動電路的例行測試及其程序

    The P90CL301 is a highly integrated 16/32 bit micro-controller especially suitable for applications requiring lowvoltage and low power consumption. It is fully software compatible with the 68000. Furthermore, it provides bothstandard as well as advanced peripheral functions On-Chip.One of these peripheral functions is the I2C bus. This report describes worked-out driver software (written in C) toprogram the P90CL301 I2C interface. It also contains interface software routines offering the user a quick start inwriting a complete I2C system application.

    標簽: P90 301 IIC 90

    上傳時間: 2014-01-06

    上傳用戶:氣溫達上千萬的

  • XA-S3的IIC接口的驅動器軟件程序(C語言)

    The XA-S3 is a member of Philips Semiconductors’ XA (eXtended Architecture) family of high performance 16-bit single-chip Microcontrollers. The XA-S3 combines many powerful peripherals on one chip. Therefore, it is suited for general multipurpose high performance embedded control functions.One of the On-Chip peripherals is the I2C bus interface. This report describes worked-out driver software (written in C) to program / use the I2C interface of the XA-S3. The driver software, together with a demo program and interface software routines offer the user a quick start in writing a complete I2C - XAS3 system application.

    標簽: XA-S IIC C語言 接口

    上傳時間: 2013-11-10

    上傳用戶:liaofamous

  • 用C51寫的普通拼音輸入法源程序代碼

    用C51寫的普通拼音輸入法源程序代碼:原作使用了一個二維數組用以查表,我認為這樣比較的浪費空間,而且每個字表的索引地址要手工輸入,效率不高。所以我用結構體將其改寫了一下。就是大家現在看到的這個。  因為代碼比較的大,共有6,000多漢字,這樣就得要12,000 byte來存放GB內碼,所以也是沒辦法的.編譯結果約為3000h,因為大部分是索引表,代碼優化幾乎無效。    在Keil C里仿真芯片選用的是華邦的W77E58,它有32k ROM, 256B On-Chip RAM, 1K On-Chip SRAM (用DPTR1指針尋址,相當于有1K的片上xdata)。條件有限,沒有上片試驗,仿真而已。  打算將其移植到AVR上,但CodeAVRC與IAR EC++在結構體、指針的定義使用上似乎與C51不太一樣,現在還未搞定。還希望在這方面有經驗的網友能給予指導。 #include<stdio.h> char * py_ime(char *); void main(void){ while(1)    {     char input_string[]="yI";     xdata char chinese_string[255];     sprintf(chinese_string,"%s",py_ime(input_string));    }}

    標簽: C51 拼音輸入法 代碼 源程序

    上傳時間: 2013-10-30

    上傳用戶:cainaifa

  • pk51下載 (8051單片機開發工具)

    PK51是為8051系列單片機所設計的開發工具,支持所有8051系列衍生產品,,支持帶擴展存儲器和擴展指令集(例如Dallas390/5240/400,Philips 51MX,Analog Devices MicroConverters)的新設備,以及支持很多公司的一流的設備和IP內核,比如Analog Devices, Atmel, Cypress Semiconductor, Dallas Semiconductor, Goal, Hynix, Infineon, Intel, NXP(founded by Philips), OKI, Silicon Labs,SMSC, STMicroeleectronics,Synopsis, TDK, Temic, Texas Instruments,Winbond等。通過PK51專業級開發工具,可以輕松地了解8051的On-Chip peripherals與及其它關鍵特性。    

    標簽: 8051 pk 51

    上傳時間: 2013-10-09

    上傳用戶:1109003457

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