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Nathan Smith
Jun 15, 2020, 12:10:27 PM6/15/20
to BeagleBoard
Is anybody familiar with the voltage of the output pins? I looked through the technical reference sheet, but I could not find this information.
Thank you!
Dennis Lee Bieber
Jun 15, 2020, 1:57:58 PM6/15/20
to Beagleboard
On Mon, 15 Jun 2020 09:10:27 -0700 (PDT), in
gmane.comp.hardware.beagleboard.user Nathan Smith
"""
Expansion Connectors
Power 5V, 3.3V , VDD_ADC(1.8V)
3.3V I/O on all signals
McASP0, SPI1, I2C, GPIO(69 max), LCD, GPMC, MMC1, MMC2, 7
AIN (1.8V MAX), 4 Timers, 4 Serial Ports, CAN0,
EHRPWM(0,2),XDMA Interrupt, Power button, Expansion Board ID (Up to 4 can
be stacked)
"""
The chipset used for the various beagles is 3.3V based (analog inputs
are limited to 1.8V). Presuming the old 30/70% thresholds for CMOS signals,
LOW is 0.0..1.0, HIGH is 2.3..3.3, 1.0..2.3 is indeterminate (the chips
should be outputting close to the 0.0 and 3.3 levels, but any input device
should accept the range).
--
Dennis L Bieber
gmane.comp.hardware.beagleboard.user Nathan Smith
<nsmiith8-Re5JQE...@public.gmane.org> wrote:
>Is anybody familiar with the voltage of the output pins? I looked through
>the technical reference sheet, but I could not find this information.
>
https://github.com/beagleboard/beaglebone-black/wiki/System-Reference-Manual#beaglebone-black-features-and-specification
>Is anybody familiar with the voltage of the output pins? I looked through
>the technical reference sheet, but I could not find this information.
>
"""
Expansion Connectors
Power 5V, 3.3V , VDD_ADC(1.8V)
3.3V I/O on all signals
McASP0, SPI1, I2C, GPIO(69 max), LCD, GPMC, MMC1, MMC2, 7
AIN (1.8V MAX), 4 Timers, 4 Serial Ports, CAN0,
EHRPWM(0,2),XDMA Interrupt, Power button, Expansion Board ID (Up to 4 can
be stacked)
"""
The chipset used for the various beagles is 3.3V based (analog inputs
are limited to 1.8V). Presuming the old 30/70% thresholds for CMOS signals,
LOW is 0.0..1.0, HIGH is 2.3..3.3, 1.0..2.3 is indeterminate (the chips
should be outputting close to the 0.0 and 3.3 levels, but any input device
should accept the range).
--
Dennis L Bieber
Nathan Smith
Jun 15, 2020, 7:57:22 PM6/15/20
to BeagleBoard
Thank you so much
On Monday, June 15, 2020 at 1:57:58 PM UTC-4, Dennis Bieber wrote:
On Mon, 15 Jun 2020 09:10:27 -0700 (PDT), in
gmane.comp.hardware.beagleboard.user Nathan Smith
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