Products > Test Equipment
Keysight 34465A reliability
floobydust:
TI desperately needed to leapfrog into ARM core or get left in the dust. But then taking 5 years to fully realize the 3rd party FLASH IP used in the MCU's is total garbage? I've only seem Atmel's SAM7 was a lemon randomly erasing its FLASH (had to give up and end that product) so maybe it's early Atmel tech Luminary bought. But LM3S FLASH just rots and ages even when sitting there doing nothing, so reprogramming the FLASH is not always possible or a fix.
Then, replacement parts are not pin compatible, so basically you chuck the main board into the garbage making for a very costly repair. It's a total turd. TI got suckered with that acquisition and Keysight mixing both ST and TI MCU's in a product not the brightest move.
wraper:
--- Quote from: floobydust on April 27, 2022, 05:07:55 pm ---TI desperately needed to leapfrog into ARM core or get left in the dust. But then taking 5 years to fully realize the 3rd party FLASH IP used in the MCU's is total garbage?
--- End quote ---
FWIW TI made ARM based SoC (mainly for phones) for at least a decade at the time of acquisition (2009).
wraper:
Also it's not just flash that is garbage. Looking on errata it's easier to count things that are working properly, rather than those which are broken in some way.
For example following cannot possibly be overlooked. You need to make an informed decision to release broken garbage.
--- Quote ---LM3GPIO#05 PB1 has permanent internal pull-up resistance
Device(s) Affected: Stellaris Tempest-class Rev C5 and Firestorm-class Rev A2
Description: Regardless of its configuration (GPIO or alternate digital function), PB1 has a maximum
internal pull-up resistance of 800 Ω that turns on when the voltage on the pin is
approximately 1.2 V. Due to this internal resistance, up to 3 mA of current may be
sourced during the transition from 1.2 V to 3.3 V.
Workaround(s): When this pin is configured as an input, the external circuit must drive with an
impedance less than or equal to 300 Ω to provide enough drive strength to over-drive the
internal pull-up and achieve the necessary VIL voltage level. Ensure that the driver can
sink the temporary current. In addition, do not use PB1 in open-drain mode.
If this pin is configured as an output, be aware that if the output was driven High and a
non-POR reset occurs, the output may be driven High after reset unless it has a 300-Ω
resistor on it. Once the pin is configured as an output, the pin drives the programmed
level.
--- End quote ---
skander36:
Sorry for asking again, all 34465A DMM's make a relay click sound when central (red) wire is touched? It is a normal behaviour?
Thank you!
wraper:
--- Quote from: skander36 on April 28, 2022, 12:43:51 pm ---Sorry for asking again, all 34465A DMM's make a relay click sound when central (red) wire is touched? It is a normal behaviour?
Thank you!
--- End quote ---
Does it click if you disable autoranging? Also is it in 10Mohm impedance mode?
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