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authorSergiy Yevtushenko <Sergiy.Yevtushenko@gmail.com>2013-04-04 19:10:18 +0300
committerSergiy Yevtushenko <Sergiy.Yevtushenko@gmail.com>2013-04-04 19:10:18 +0300
commit4a215518cb63265801f626aeaca365f6c20d3285 (patch)
tree5477363db2925ce9676a9a0466ad20c4a3a33039
parent3a323baa868944ee584f76ce6c98af4271d1b1d7 (diff)
Added comments for new designs.
-rw-r--r--README17
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format of original Maple Mini with 0.6" pin header rows pitch.
Uses Eagle 5.1
+ Mini48SE - This version is very similar to Maple Mini, but it does not preserve
+ its pinout. It also heavily utilizes second side to achieve maximal possible density.
+ As a consequence this version is probably smallest STM32F103Cxx board - it has 0.5" pitch
+ and size only 50.5x15mm. At the same time board uses no extremely small components - all
+ resistors and capacitors are 0603 (one even 0805), LED - 1206, LDO - 1117.
+ Uses Eagle 6.3.0
+ The design is not yet tested.
+
+ Mini64SE - Different approach to boards based on MCU in LQFP64 package. It has DIP48 format with 0.8" pitch.
+ The design follows same approach as Mini48SE and utilizes both sides. Separate versions of design for
+ F1 and F2/F4 series are provided. Version for F2/F4 uses different ESD protection and lacks external
+ disconnect cirquitry. These changes are necessary to enable F2/F4 chips work properly in all supported
+ USB modes and with different powering (self powering and bus powering).
+ Uses Eagle 6.3.0
+ Designs are not yet tested.
+
PiXe-2: 'Stamp' format, 64pin STM32F103 MCU. Eagle 5.1
Features:
- Dual-in-line 0.1" grid
- 0805 or larger parts -> easier assembly
- Internal Maple pins available & re-configurable
- modest 10mil track/space rules DIY-able
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