All,
I'm considering a custom Teensy board and intend to get the pre-programmed bootloader chip: IC_MKL04Z32_TQFP32
from PJRC.
From the documentation I've scanned; the MK04 bootloader chip runs from 3.3V; however, the freescale documentation seems to indicate that the chip is capable down to 1.7ish volts.
In my application; I need the Main Teensy chip (MK20DX256) to operate with a 1.8V signal level. I couldn't easily locate any "de-rateing" details in the Freescale documentation regarding running at lower 1.8V conditions.
Assuming I use voltage translation between MKL02 and MK20 would there be any issue running the MK20DX at 1.8V?
Does the bootloader chip make any assumptions about the voltage system?
Could the bootloader run at 1.8V as well; thereby negating any need for voltage translation?
John
I'm considering a custom Teensy board and intend to get the pre-programmed bootloader chip: IC_MKL04Z32_TQFP32
from PJRC.
From the documentation I've scanned; the MK04 bootloader chip runs from 3.3V; however, the freescale documentation seems to indicate that the chip is capable down to 1.7ish volts.
In my application; I need the Main Teensy chip (MK20DX256) to operate with a 1.8V signal level. I couldn't easily locate any "de-rateing" details in the Freescale documentation regarding running at lower 1.8V conditions.
Assuming I use voltage translation between MKL02 and MK20 would there be any issue running the MK20DX at 1.8V?
Does the bootloader chip make any assumptions about the voltage system?
Could the bootloader run at 1.8V as well; thereby negating any need for voltage translation?
John