M30245_06 RENESAS [Renesas Technology Corp], M30245_06 Datasheet - Page 264

• Manufacturer Part Number: M30245_06
• Description: RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/20 SERIES
• Manufacturer: RENESAS [Renesas Technology Corp]

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Figure 2.12.1. Memory map of watchdog timer-related registers
Figure 2.12.2. Watchdog timer-related registers
(6) Registers related to the watchdog timer
b7
Watchdog timer control register
Watchdog timer start register
b7
Figure 2.12.1 shows the memory map of watchdog timer-related registers, and Figure 2.12.2 shows
watchdog timer-related registers.
b6
0
b5
0
b4
b3
page 255 of 354
b2
b1
000E
000F
0010
b0
b0
16
16
16
The Watchdog timer is initialized and starts counting after the first write instruction
to this register after reset. Writing any value to this register resets the counter to
7FFF
Bit symbol
High-order bit of Watchdog timer
Reserved bit
WDC7
Symbol
Symbol
16
WDC
WDTS
.
Watchdog timer start register (WDTS)
Watchdog timer control register (WDC)
Prescaler select bit
Bit name
Address
Address
000F
000E
16
16
Function
Indeterminate
000XXXXX
When reset
When reset
Must always be set to “0”
0 : Divided by 16
1 : Divided by 128
2
Function
2. Watchdog Timer
R
R
W
W