upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 502

• Manufacturer Part Number: upd70f3422gj-gae-qs-ax
• Description: 32-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

Chapter 15
502
Bit Position
2 to 0
Initial Value
Table 15-3
Address
Access
WDCS[2:0]
Bit Name
Note
(1)
WDCS - WDT clock selection register
The 8-bit WDCS register is used to specify the running time of the Watchdog
Timer.
This register can be read/written in 8-bit or 1-bit units.
Writing to this register is protected by a special sequence of instructions.
Please refer to “WCMD - WDT command protection register“ on page 505 for
details.
<base>
07
WDCS register contents
The WDCS register must be considered in conjunction with the WCC register
of the Clock Generator. The source and frequency of WDTCLK are defined in
the WCC register.
Preliminary User’s Manual U17566EE1V2UM00
H
R
. This register is initialized by SYSRESWDT and SYSRES.
7
Function
Specifies the running time of the Watchdog Timer
WDCS2
0
0
0
0
1
1
1
1
R
6
WDCS1
R
5
0
0
1
1
0
0
1
1
R
4
WDCS0
0
1
0
1
0
1
0
1
R
3
Running time calculation
2
2
2
2
2
2
2
2
13
14
15
16
17
18
19
20
/ f
/ f
/ f
/ f
/ f
/ f
/ f
/ f
WDCS2
WDTCLK
WDTCLK
WDTCLK
WDTCLK
WDTCLK
WDTCLK
WDTCLK
WDTCLK
R/W
2
Watchdog Timer (WDT)
WDCS1
R/W
1
WDCS0
R/W
0