ARM Chip Selection Simple guide

At present, the domestic market common arm has NXP (Philips), Samsung, Atmel, TI, Adi, etc., according to user requirements and application areas, can be selected from the following aspects:

1, Speed (general application): ARM7 's main clock is 20~133M,ARM9 for 100~233M,ARM10 up to 700M, if the speed requirements are higher, you can also use multi-core arm, such as Minspeed company's arm series of chips.

2, Memory (general application): General arm with Flash (program) and SRAM (data), Atmel's arm comes with the largest memory capacity. If you want to expand the external Sdram,atmel, Samsung, NXP can be.

3, MCU Upgrade (general application): If it is from the original single-chip system upgrade (speed, GPIO, etc.), can choose NXP Arm, the company's arm cost-effective, some models within 30 yuan can be bought, and have Ucos single-chip computer technology support, development tools, technical information is rich.

4. USB interface (special application): Samsung has a variety of arm built-in USB2.0 Host/device interface, NXP's arm also has a built-in USB2.0 (full speed) interface.

5, Ad/da (data acquisition, industrial control): Analog devices is mainly to do analog chips, so the company's arm chips are basically built-in AD, DA, and the number of bits, speed is the best.

6, Ethernet (embedded web, Modem): Samsung, Atmel Company by a variety of arm built-in Ethernet controller, NXP part of ARM also has.

7, DSP (Signal Processing): Ti is the most famous DSP, so the company's arm built-in DSP processor; Motolora Company's arm also has built-in DSP.

8, Audio/video interface (audio/video equipment): There is no doubt that the choice of Philips arm, such as SAA7750.

9, FPGA (complex logic circuit): Altera company specifically to do EPLD/FPGA, the company's arm built-in FPGA, such as EPXA1, EPXA4, EPXA10 built-in FPGA gate circuit number is 100K, 400K, 1000K.

10, CORTEX-M3 (the latest arm core, cost-effective): the domestic more popular with St's STM32 series, NXP's Lpc13xx series and TI's Lm3s series, which STM32 the most popular, alone led the limelight.

ARM Chip Selection Simple guide