r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 379

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
18.2.22 Timer RE2 Protect Register (TREPRC) in Real-Time Clock Mode
TRECR register
RTCRST bit in
PROTECT Bit (Protect bit)
After reset by
Bit
b0
b1
b2
b3
b4
b5
b6
b7
After Reset
The following registers and bit can be changed when this bit is set to 1 (write enabled):
• Timer RE data registers (TRESEC, TREMIN, TREHR, TREWK, TREDY, TREMON, and TREYR)
• The PM bit in the TRECR register
When 1 is written to the PROTECT bit by a program, this bit remains 1. Use the following procedure to change
the registers protected by this bit:
(1) Write 1 to the PROTECT bit.
(2) Write a value to the register protected by this bit.
(3) Write 0 (write disabled) to this bit.
Address 0017Fh
Symbol PROTECT
PROTECT Protect bit
Symbol
Bit
—
—
—
—
—
—
—
Preliminary document
Specifications in this document are tentative and subject to change.
b7
X
Nothing is assigned. The write value must be 0. The read value is 0.
Reserved
0
b6
—
X
0
Bit Name
b5
—
0
0
b4
—
0
0
Set to 0.
Writing to the time data registers
0: Write disabled
1: Write enabled
b3
—
0
0
b2
—
0
0
Function
b1
—
0
0
b0
—
0
0
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18. Timer RE2
R/W
R/W
R/W
—