Hi, I see in the datasheet of the AT91SAM7A3 that the real-time timer (RTT) is fed by the Slow Clock, which is an internal RC...

Hi, I see in the datasheet of the AT91SAM7A3 that the real-time timer (RTT) is fed by the Slow Clock, which is an internal RC oscillator (f=22 kHz to 42 kHz). The RTT has a 16-bit prescaler and a 32-bit counter. How are we supposed to use such an inaccurate clock as the source for a real-time timer? The only way I can think of is to add a crystal (which will not always be running (other...

Hi I am looking for simple cheap thumb MCU requirements 1 40+ MIPS 2 16 + IO pins 3 single cycle GPIO port 4 16+ KB flash (32k if mcu is...

Hi I am looking for simple cheap thumb MCU requirements 1 40+ MIPS 2 16 + IO pins 3 single cycle GPIO port 4 16+ KB flash (32k if mcu is 32 bit one) 5 optionally FS USB device 6 preffered onchip high speed oscillator low cost < 2.0 usd (little more if usb is present) SAM7 have slow GPIO the microchips new MIPS based one, dont have pricing and gpio speed info any chip that fit

Hi, i need help on finding a crystal for my application .. the requirements are: drive level : max 500mW CL : 20pF f : 25Mhz I have...

Hi, i need help on finding a crystal for my application .. the requirements are: drive level : max 500mW CL : 20pF f : 25Mhz I have looked every where, and nobody has a crystal that meets those two requirements when i find a oscillator with f.x 25Mhz and CL=20pF it dosent have enough drive level, and if i find one with CL=20pF and ok drive level than it is not made in 25Mhz .. ARGH !!...