R4F24268NVFQV Renesas Electronics America, R4F24268NVFQV Datasheet - Page 130

• Manufacturer Part Number: R4F24268NVFQV
• Description: MCU 256K FLASH 48K 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

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: -

Section 4 Exception Handling
4.3.2
If an interrupt is accepted after a reset but before the stack pointer (SP) is initialized, the PC and
CCR will not be saved correctly, leading to a program crash. To prevent this, all interrupt requests,
including NMI, are disabled immediately after a reset. Since the first instruction of a program is
always executed immediately after the reset state ends, make sure that this instruction initializes
the stack pointer (example: MOV.L #xx: 32, SP).
4.3.3
After reset release, MSTPCR is initialized to H'0FFF, EXMSTPCR is initialized to H'FFFF, and
all modules except the DMAC, EXDMAC, and DTC enter the module stop state.
Consequently, on-chip peripheral module registers cannot be read or written to. Register reading
and writing is enabled when the module stop state is exited.
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(1)(3) Reset exception handling vector address (when reset, (1)=H'000000, (3)=H'000002)
(2)(4) Start address (contents of reset exception handling vector address)
(5) Start address ((5)=(2)(4))
(6) First program instruction
Note: * Seven program wait states are inserted.
RES
RD
HWR, LWR
D15 to D0
Figure 4.2 Reset Sequence (Advanced Mode with On-chip ROM Disabled)
φ
Address bus
Interrupts after Reset
On-Chip Peripheral Functions after Reset Release
(1)
*
Vector fetch
(2)
High
*
(3)
(4)
Internal
processing
H8S/2426, H8S/2426R, H8S/2424 Group
Prefetch of first
program instruction
REJ09B0466-0350 Rev. 3.50
*
(5)
(6)
Jul 09, 2010