r5f21346mnfp Renesas Electronics Corporation., r5f21346mnfp Datasheet - Page 215

• Manufacturer Part Number: r5f21346mnfp
• Description: Single-chip Mcus Incorporates The R8c Cpu Core
• Manufacturer: Renesas Electronics Corporation.

R8C/34M Group
R01UH0131EJ0100 Rev.1.00
Jun 21, 2011
14.2.4
14.2.5
Note:
1. To set the CSPRO bit to 1, write 0 and then 1 to it. This bit cannot be set to 0 by a program. Disable interrupts
After Reset
After Reset
After Reset
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 000Fh
Address 001Ch
and DTC activation between writing 0 and writing 1.
Symbol WDTC7
Symbol CSPRO
WDTC7 Prescaler select bit
CSPRO Count source protection mode select bit
Symbol
Symbol
Bit
Bit
Watchdog Timer Control Register (WDTC)
Count Source Protection Mode Register (CSPR)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
The above applies when the CSPROINI bit in the OFS register is set to 1.
The above applies when the CSPROINI bit in the OFS register is set to 0.
b7
b7
0
0
1
The following bits of the watchdog timer can be read.
When bits WDTUFS1 to WDTUFS0 in the OFS2 register are
00b (03FFh): b5 to b0
01b (0FFFh): b7 to b2
10b (1FFFh): b8 to b3
11b (3FFFh): b9 to b4
Reserved bit
Reserved bits
b6
b6
—
—
0
0
0
Bit Name
Bit Name
b5
—
b5
—
1
0
0
b4
b4
—
—
1
0
0
When read, the content is 0.
0: Divided-by-16
1: Divided-by-128
(1)
b3
b3
—
—
1
0
0
Set to 0.
0: Count source protection mode disabled
1: Count source protection mode enabled
b2
b2
—
—
1
0
0
Function
b1
b1
—
—
Function
1
0
0
b0
b0
—
—
1
0
0
14. Watchdog Timer
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R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R