R4F24268NVFQV Renesas Electronics America, R4F24268NVFQV Datasheet - Page 894
R4F24268NVFQV
Manufacturer Part Number
R4F24268NVFQV
Description
MCU 256K FLASH 48K 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2400r
Datasheet
1.R4F24268NVZFQV.pdf
(1406 pages)
Specifications of R4F24268NVFQV
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)
14.6.5
This LSI is not reset internally if TCNT overflows while the RSTE bit is cleared to 0 during
watchdog timer mode operation, but TCNT and TCSR of the WDT are reset.
TCNT, TCSR, and RSTCR cannot be written to while the WDTOVF signal is low. Also note that
a read of the WOVF flag is not recognized during this period. To clear the WOVF flag, therefore,
read TCSR after the WDTOVF signal goes high, then write 0 to the WOVF flag.
14.6.6
If the WDTOVF output signal is input to the RES pin, the chip will not be initialized correctly.
Make sure that the WDTOVF signal is not input logically to the RES pin.
To reset the entire system by means of the WDTOVF signal, use the circuit shown in figure 14.6.
Page 864 of 1372
Reset signal to entire system
Internal Reset in Watchdog Timer Mode
System Reset by WDTOVF Signal
Figure 14.6 Circuit for System Reset by WDTOVF Signal (Example)
Reset input
H8S/2426, H8S/2426R, H8S/2424 Group
REJ09B0466-0350 Rev. 3.50
WDTOVF
RES
This LSI
Jul 09, 2010
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