NXP Semiconductors KL25 Series - Freescale Semiconductor, Inc

Table 27-32. Read Resource Command FCCOB Requirements
FCCOB Number FCCOB Contents [7:0]
0 0x03 (RDRSRC)
1 Flash address [23:16]
2 Flash address [15:8]
3 Flash address [7:0]
1
Returned Values
4 Read Data [31:24]
5 Read Data [23:16]
6 Read Data [15:8]
7 Read Data [7:0]
User-provided values
8 Resource Select Code (see Table 27-33)
1. Must be longword aligned (Flash address [1:0] = 00).
Table 27-33. Read Resource Select Codes
Resource
Select Code
Description Resource Size Local Address Range
0x00 Program Flash 0 IFR 256 Bytes 0x00_0000 - 0x00_00FF
0x01
1
Version ID 8 Bytes 0x00_0000 - 0x00_0007
1. Located in program flash 0 reserved space.
After clearing CCIF to launch the Read Resource command, four consecutive bytes are
read from the selected resource at the provided relative address and stored in the FCCOB
register. The CCIF flag sets after the Read Resource operation completes. The Read
Resource command exits with an access error if an invalid resource code is provided or if
the address for the applicable area is out-of-range.
Table 27-34. Read Resource Command Error Handling
Error Condition Error Bit
Command not available in current mode/security FSTAT[ACCERR]
An invalid resource code is entered FSTAT[ACCERR]
Flash address is out-of-range for the targeted resource. FSTAT[ACCERR]
Flash address is not longword aligned FSTAT[ACCERR]
27.4.10.4 Program Longword Command
The Program Longword command programs four previously-erased bytes in the program
flash memory using an embedded algorithm.
Functional Description
KL25 Sub-Family Reference Manual, Rev. 3, September 2012
444 Freescale Semiconductor, Inc.