Tutorial for FRDM-KL25Z: Completing the Freescale Freedom Board

FreescaleTools_and_Software — Sun, 27 Oct 2013 05:48:29 GMT

Current Revision posted to Documents by FreescaleTools_and_Software on 10/27/2013 5:48:29 AM

This tutorial was extracted from Erich Styger blog http://mcuoneclipse.wordpress.com with his agreement.

I had pre-ordered some FRDM-KL25Z boards, and they came with the extra headers in plastic bags:

Pre-ordered Freedom board with headers

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:

Schematics	Farnell Part#	#	Description	Comment
J10	1668351	1	SAMTEC – SSW-106-01-G-DSSW-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-DSSW-110-01-G-D	‘Arduino’ header 2×10, 2.54 mm
J3, J4, J11	1704910	3	MOLEX – 22-28-402222-28-4022 – 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.

One or two debug connectors are only needed if I want to bypass OpenSDA, or to recover a CPU directly with a P&E Universal Multilink.

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.

Happy upgrading

Tags: header, connector, freescale, frdm-kl25z, arduino, freedom