R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 1194
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R4F24278NVFQU
Manufacturer Part Number
R4F24278NVFQU
Description
MCU 512K/48K 2.7-5.5V 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2400r
Datasheet
1.R4F24278NVFQU.pdf
(1482 pages)
Specifications of R4F24278NVFQU
Core Processor
H8S/2600
Core Size
16/32-Bit
Speed
33MHz
Connectivity
EBI/EMI, I²C, IrDA, SCI, Smart Card, SPI, SSU, UART/USART
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
98
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Eeprom Size
-
Ram Size
64K 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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R4F24278NVFQU
Manufacturer:
REALTEK
Quantity:
2 300
Company:
Part Number:
R4F24278NVFQU
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 23 Flash Memory
23.12
This LSI has user boot mode in which the LSI is activated with mode pin settings different from
those in user program mode and boot mode. A user-arbitrary boot mode different from the boot
mode using the on-chip SCI can be enabled.
Only the user ROM and data flash can be programmed/erased in user boot mode.
Programming/erasing of user boot ROM is enabled only in boot mode or programmer mode.
(1)
When a hardware reset is issued with the mode pins set to mode 5, this LSI enters user boot mode
and the built-in check routine runs. The user ROM, data flash, and user boot ROM states will be
checked.
While the check routine is running, NMI and all other interrupts cannot be accepted.
Next, processing starts from the execution start address of the reset vector in user boot ROM. At
this point, the FMMS bit in FLMMATS is set to 1 because user boot ROM has been selected as
the execution memory MAT.
(2)
For programming the user ROM in user boot mode, additional processing made by setting the
FMMS bit in FLMMATS is required: switching from the user boot ROM to the user ROM, and
switching back to the user boot ROM after programming completes.
Figure 23.10 shows the procedure for programming the user ROM in user boot mode.
Page 1164 of 1448
Initiation in User Boot Mode
User ROM Programming in User Boot Mode
User Boot Mode
H8S/2427, H8S/2427R, H8S/2425 Group
REJ09B0565-0100 Rev. 1.00
Jul 22, 2010
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