EasyManuals Logo

Renesas RX Series User Manual

Renesas RX Series
1823 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #844 background imageLoading...
Page #844 background image
R01UH0823EJ0100 Rev.1.00 Page 844 of 1823
Jul 31, 2019
RX23W Group 31. Independent Watchdog Timer (IWDTa)
Figure 31.3 Operation Example in Register Start Mode
Refresh-
prohibited
period
(1)
(2) (2) (2)
(1) Initial value
(2) Set value
Status flag
cleared
Status flag
cleared
Counter value
Refresh-
permitted
period
Refresh-
prohibited
period
100%
75%
50%
25%
0%
RES# pin
IWDTCR
register
Refresh
the counter
(active high)
REFEF flag
UNDFF flag
Reset output
from IWDT
(active high)
Counting starts Counting starts Counting starts
Writing to the
register is valid.
H
H
L
H
L
Writing to the
register is invalid.
Underflow
Refresh error
Writing to the
register is invalid.
Refresh error
Interrupt request
(WUNI)
(active low)

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Renesas RX Series and is the answer not in the manual?

Renesas RX Series Specifications

General IconGeneral
CoreRXv1, RXv2, RXv3
Flash MemoryUp to 8 MB
RAMUp to 1 MB
Operating Voltage1.62V to 5.5V
Operating Temperature-40°C to +85°C or +105°C
PackageBGA, LQFP
ADC Resolution12-bit
DAC Resolution12-bit
Communication InterfacesSCI, SPI, I2C, USB, Ethernet, CAN
Architecture32-bit
Security FeaturesMemory Protection Unit (MPU)

Related product manuals