RL78/F13, F14 CHAPTER 18 CAN INTERFACE (RS-CAN LITE)
R01UH0368EJ0210 Rev.2.10 1378
Dec 10, 2015
18.3.81 CAN Global Test Protection Unlock Register (GLOCKK)
Address GLOCKK: F0394H
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
LOCK[15:0]
After Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Bit Symbol Bit Name Description R/W
15 to 0 LOCK[15:0] Protection Unlock Data Write protection unlock data to use test functions. These
bits are always read as 0.
W
Modify the GLOCKK register only in global test mode.
• LOCK[15:0] Bits
Write the protection unlock data shown in Table 18-4 to the LOCK[15:0] bits in succession to allow writing 1 to
the target bit.
Table 18-4. Protection Unlock Data for Test Functions
Test Function Protection Unlock Data 1 Protection Unlock Data 2 Target Bit
RAM test H'7575 H'8A8A RTME bit in the GTSTCTRL register
Writing data to the CAN's SFR area (H'F0300 to H'F039F) except the RAM area after protection is unlocked enables
protection again.
Protection is not enabled even by reading data from the CAN's SFR area or reading/writing data from/to other areas.
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