I had pre-ordered some FRDM-KL25Z boards, and they came with the extra headers in plastic bags (see this post):
I have received as well a batch of the production boards, and for these I need to order the missing parts. So for everyone else, here are the Farnell part numbers:
Here is a table of all the parts which are on the pre-production ‘white’ board, but not populated on the ‘black’ production board, with reference to the board schematics:
|J10||1668351||1||SAMTEC – SSW-106-01-G-D||‘Arduino’ header 2×6, 2.54 mm|
|J1, J9||1668364||2||SAMTEC – SSW-108-02-G-D||‘Arduino’ header 2×8, 2.54 mm|
|J2||1668373||1||SAMTEC – SSW-110-01-G-D||‘Arduino’ header 2×10, 2.54 mm|
|J3, J4, J11||1704910||3||MOLEX – 22-28-4022 – BOARD-BOARD CONNECTOR HEADER, 2WAY, 1ROW||Jumper header, 2.54 mm|
|J6, J8||1667728||2||SAMTEC – FTS-105-01-L-D||Debug Connector 2×5 1.27 mm, (FYI, mating cable is 1667659)|
|U5||2136670||1||ATMEL – AT45DB161E-SHD-B – DATAFLASH, 16MBIT, SPI, 8WSOIC||Serial flash (connected to OpenSDA K20, *not* to the KL25Z!)|
|BT1||908654||1||KEYSTONE – 3003 – BATTERYHOLDER 20mm||Battery holder for CR2032 battery|
|(BT1)||1823479||1||CR 2032 Coin Li Battery, 3V||CR2032 battery|
I assume that things like the jumper headers are readily available, and are only required if I cut the trace between the jumpers on the board.
Alternative parts from Mouser.com for the SWD/JTAG parts:
- JTAG/SWD cable: 855-M50-9110542
- JTAG/SWD connector: 855-M50-3600542
- JTAG/SWD plug: 855-M50-3300542
The Serial Flash chip is only connected to the K20 OpenSDA device, and currently not used.
❗ Note: On some(!!!!) of the black production boards, R25 (near the 8 MHz crystal) is not populated, while it is on the white boards. Having the 1 MOhm resistor requires the PEE (USB) clock to run in ‘high gain’ main, while without R25 it has to run in ‘low power’ mode. See Tutorial: USB CDC with the KL25Z Freedom Board.