upd78f0114m6gb-8es Renesas Electronics Corporation., upd78f0114m6gb-8es Datasheet - Page 214
upd78f0114m6gb-8es
Manufacturer Part Number
upd78f0114m6gb-8es
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0114M6GB-8ES.pdf
(534 pages)
- Current page: 214 of 534
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214
Notes 1.
Remarks 1. f
Watchdog timer clock
source
Operation after reset
Operation mode selection
Features
2.
2. f
As long as power is being supplied, Ring-OSC oscillation cannot be stopped (except in the reset
period).
The conditions under which clock supply to the watchdog timer is stopped differ depending on
the clock source of the watchdog timer.
<1> If the clock source is f
<2> If the clock source is f
Table 10-2. Mask Option Setting and Watchdog Timer Operation Mode
R
XP
: Ring-OSC clock oscillation frequency
: X1 input clock oscillation frequency
conditions.
• When f
• In HALT/STOP mode
• During oscillation stabilization time
conditions.
• If the CPU clock is f
• In HALT/STOP mode
instruction
XP
Fixed to f
Operation starts with the maximum
interval (2
The interval can be changed only
once.
The watchdog timer cannot be
stopped.
is stopped
Ring-OSC Cannot Be Stopped
CHAPTER 10 WATCHDOG TIMER
R
User’s Manual U16227EJ3V0UD
18
Note 1
/f
R
XP
R
).
.
, clock supply to the watchdog timer is stopped under the following
XP
, clock supply to the watchdog timer is stopped under the following
and if f
R
is stopped by software before execution of the STOP
Mask Option
Ring-OSC Can Be Stopped by Software
• Selectable by software (f
• When reset is released: f
Operation starts with the maximum
interval (2
The clock selection/interval can be
changed only once.
The watchdog timer can be stopped in
standby mode
stopped)
18
/f
R
).
Note 2
.
XP
R
, f
R
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