Cmsemicon CMS32L051 - LOCKUP Control Register (Lockctl)And Its Protection Register (PRCR)

V1.2.2
CMS32L051 User Manual |Chapter 10 Watchdog Timer
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10.3.2 LOCKUP control register (LOCKCTL)and its protection register (PRCR)
The LOCKCTL register is the configuration register for whether the Cortex-M0+ LockUp feature causes
the watchdog timer to run, and the PRCR is its write-protected register.
Set the LOCKCTL, PRCR register via 8-bit memory operation instructions.
After the reset signal is generated, the value of the LOCKCTL, PRCR register changes to 00H.
Figure 10-3 Format of LOCKUP control register (LOCKCTL)and its protection register (PRCR) (1/2)
Address: 40020405H After reset: 00HR/W
Symbol
7 6 5 4 3 2 1 0
LOCKCTL
lockup_rst
Configuration of the LOCKUP function
0

1

Figure 10-3 Format of LOCKUP control register (LOCKCTL)and its protection register (PRCR) (2/2)
Address: 40020406H After reset: 00H R/W
Symbol
7 6 5 4 3 2 1 0
PRCR
PRCR
LOCKUP controls register write protection
0
writable
1

PRTKEY[7:1]
Write protection for PRCR
78H
 writable
other

0
0
0
0
0
0
0
lockup_rst
PRTKEY[7:1]
PRCR