= HF8V = / = SP8WJT = / = SP0106RZ =

TPD52906


PCB PROJECT: TPD52906
DESCRIPTION: Universal PCB for TQFP32-QFP100 (0.5 mm), TQFP32-TQFP64 (0.8 mm)
TYPE: External constructions (TPD5xxxx)
STATUS: u
DIMENSIONS: 46 x 38 mm
PCB TECHNOLOGY: LD


Instances

PCB PROJECTPARTIASTATUSUSAGEREMARKS
TPD52906#1PARTIA1uHF-12247
TPD52906#2PARTIA1uHF-12249 -> HF-12275
TPD52906#3PARTIA1uHF-12258
TPD52906#4PARTIA1uHF-12270
TPD52906#5PARTIA1uHF-12271
TPD52906#6PARTIA2uHF-12276
TPD52906#7PARTIA2ureserve
TPD52906#8PARTIA2ureserve
TPD52906#9PARTIA2ureserve
TPD52906#10PARTIA2ureserve
TPD52906#11PARTIA2ureserve
TPD52906#12PARTIA2ureserve
TPD52906#13PARTIA2ureserve
TPD52906#14PARTIA2ureserve
TPD52906#15PARTIA2ureserve



Project Info

Acquired in our Chinese Comrades, cheap and good. Universal PCBs for uC are far not ideal if we talking about stray capacitances but there are good things like mobility (possibility of quick swapping uC module). Overall miniaturisation isn't so bad because additional components can be mounted beneath uC module. In result we have a kind of electronic multilayer "sandwich".

For TQFP32 and TQFP64 TPD52912 is better because is much smaller.


Decoupling capacitors

Decoupling capacitors always should be mounted on uC board. I'm using 2 methods for this:
1/ for low frequency uCs for example AVR with max. 20 MHz clock, 0603 SMD capacitors between goldpin connectors.
2/ for high frequency uCs for example ARM, 0402 SMD capacitors mounted on paths 5-6 mm from the uC. Prior to do this toner must be removed and element must be soldered at the angle (no room for straight position). This is naturally difficult operation as 0402 elements are 1 mm long with 0.2 mm solder terminals, but possible with some practise.


Sources:
[1]


TPD Database

HF Register

Microcontrollers in my constructions

UC Database - my CPU collection

Electronics

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