MG69L220A Datasheet, PDF (11/27 Pages) Megawin Technology Co., Ltd – 8-Bit Micro-Controller with IO function

MG69L220A Datasheet
Version 0.04
6.2 Write Protect Function Register
Address Name
00F9H CWPR
Bit 7
PT7
Bit 6
PT6
Bit 5
PT5
Bit 4
PT4
Bit 3
PT3
Bit 2
PT2
Bit 1
PT1
Bit 0
PT0
RW
-
Condition Write Protect flag register (CWPR) is used to protect IRQ_CLR.7 (WDT), PWR_CR.1 (CKC0),
PWR_CR.2 (CKC1), SCK_SEL. If want to change IRQ_CLR.7 (WDT), PWR_CR.1 (CKC0), PWR_CR.2 (CKC1)
SCK_SEL, it must write “78H” to CWPR first.
PT7~PT0: Write Protect Pattern. In MG69L220A write protect pattern is “78H”
Note:
1. When CWPR is written by firmware, it would be automatically cleared by hardware after the “next write
action” of firmware.
※Bit-manipulation instructions are not available on this register.
This document information is the intellectual property of Megawin Technology.
 Megawin Technology Co., Ltd. 2011 All right reserved.
QP-7300-03D
11/27