R4F24568NVFQV Renesas Electronics America, R4F24568NVFQV Datasheet - Page 885
![MCU 128KKB FLASH 48K 144-LQFP](/photos/28/61/286117/144-lqfp__plqp0144ka-a_sml.jpg)
R4F24568NVFQV
Manufacturer Part Number
R4F24568NVFQV
Description
MCU 128KKB FLASH 48K 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2400r
Specifications of R4F24568NVFQV
Core Processor
H8S/2600
Core Size
16/32-Bit
Speed
32MHz
Connectivity
EBI/EMI, I²C, IrDA, SCI, SSU, UART/USART, USB
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 16x10b; 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
-
Available stocks
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Price
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Part Number:
R4F24568NVFQV
Manufacturer:
REA
Quantity:
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Company:
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R4F24568NVFQV
Manufacturer:
Renesas Electronics America
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H8S/2456, H8S/2456R, H8S/2454 Group
14.6
14.6.1
The watchdog timer's TCNT, TCSR, and RSTCSR registers differ from other registers in being
more difficult to write to. The procedures for writing to and reading these registers are given
below.
(1)
TCNT and TCSR must be written to by a word transfer instruction. They cannot be written to by a
byte transfer instruction.
TCNT and TCSR both have the same write address. Therefore, satisfy the relative condition
shown in figure 14.4 to write to TCNT or TCSR. The transfer instruction writes the lower byte
data to TCNT or TCSR according to the satisfied condition.
To write to RSTCSR, execute a word transfer instruction for address H'FFBE. A byte transfer
instruction cannot perform writing to RSTCSR.
The method of writing 0 to the WOVF bit differs from that of writing to the RSTE bit. To write 0
to the WOVF bit, satisfy the lower condition shown in figure 14.4.
If satisfied, the transfer instruction clears the WOVF bit to 0, but has no effect on the RSTE bit.
To write to the RSTE bit, satisfy the above condition shown in figure 14.4. If satisfied, the transfer
instruction writes the value in bit 6 of the lower byte into the RSTE bit, but has no effect on the
WOVF bit.
REJ09B0467-0350 Rev. 3.50
Jul 07, 2010
Writing to TCNT, TCSR, and RSTCSR
Usage Notes
Notes on Register Access
Section 14 Watchdog Timer (WDT)
Page 855 of 1392
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