R4F24268NVRFQV Renesas Electronics America, R4F24268NVRFQV Datasheet - Page 890
R4F24268NVRFQV
Manufacturer Part Number
R4F24268NVRFQV
Description
MCU 256KB FLASH 48K 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2400r
Datasheet
1.R4F24268NVZFQV.pdf
(1406 pages)
Specifications of R4F24268NVRFQV
Core Processor
H8S/2600
Core Size
16/32-Bit
Speed
33MHz
Connectivity
EBI/EMI, I²C, IrDA, SCI, SSU, UART/USART
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
96
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
48K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 10x10b, D/A 2x8b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Section 14 Watchdog Timer (WDT)
14.4.2
To use the WDT as an interval timer, set the WT/IT bit to 0 and TME bit in TCSR to 1.
When the WDT is used as an interval timer, an interval timer interrupt (WOVI) is generated each
time the TCNT overflows. Therefore, an interrupt can be generated at intervals.
When the TCNT overflows in interval timer mode, an interval timer interrupt (WOVI) is requested
at the same time the OVF bit in the TCSR is set to 1.
14.5
During interval timer mode operation, an overflow generates an interval timer interrupt (WOVI).
The interval timer interrupt is requested whenever the OVF flag is set to 1 in TCSR. OVF must be
cleared to 0 in the interrupt handling routine.
Table 14.2 WDT Interrupt Source
Page 860 of 1372
Name
WOVI
Legend:
WOVI: Interval timer interrupt request generation
H'FF
H'00
Interval Timer Mode
Interrupt Source
TCNT count
WT/IT=0
TME=1
Interrupt Source
TCNT overflow
Figure 14.3 Operation in Interval Timer Mode
Overflow
WOVI
Overflow
WOVI
Interrupt Flag
OVF
Overflow
WOVI
H8S/2426, H8S/2426R, H8S/2424 Group
Overflow
DTC Activation
Impossible
WOVI
REJ09B0466-0350 Rev. 3.50
Time
Jul 09, 2010
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