Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 1299 of 1823
Jul 31, 2019
RX23W Group 36. CAN Module (RSCAN)
36.12.2 Protection Unlock Procedure
Since the global test functions shown in Table 36.14 are protected, write unlock data 1 and unlock data 2 in succession
to the GLOCKK.LOCK[15:0] bits, and then set each test function bit to 1.
If an incorrect value has been written to the GLOCKK.LOCK[15:0] bits, retry the procedure above from writing of
unlock data 1.
Figure 36.34 shows the protection unlock procedure.
Figure 36.34 Protection Unlock Procedure
Table 36.14 Protection Unlock Data for Test Functions
Test Function Protection Unlock Data 1 Protection Unlock Data 2 Target Bit
RAM test 7575h 8A8Ah GTSTCTRL.RTME bit
Yes
No
Start
Set the GCTRL.GMDC[1:0] bits to 10b.
Write protection unlock data 1 to
the GLOCKK.LOCK[15:0] bits.
Set the target test function bit to 1.
End
Is the GSTS.GHLTSTS flag 1
(in global test mode)?
Write protection unlock data 2 to
the GLOCKK.LOCK[15:0] bits.
Set the test function.
Global test mode
Perform these three processes in succession.

Renesas RX Series Specifications

General

Brand	Renesas
Model	RX Series
Category	Microcontrollers
Language	English