R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 228
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 7 Bus Controller (BSC)
7.5
The basic bus interface enables direct connection of ROM, SRAM, and so on.
7.5.1
Data sizes for the CPU and other internal bus masters are byte, word, and longword. The bus
controller has a data alignment function, and when accessing external address space, controls
whether the upper data bus (D15 to D8) or lower data bus (D7 to D0) is used according to the bus
specifications for the area being accessed (8-bit access space or 16-bit access space) and the data
size.
(1)
Figure 7.8 illustrates data alignment control for the 8-bit access space. With the 8-bit access space,
the upper data bus (D15 to D8) is always used for accesses. The amount of data that can be
accessed at one time is one byte: a word access is performed as two byte accesses, and a longword
access, as four byte accesses.
Page 198 of 1448
8-Bit Access Space
Basic Bus Interface
Data Size and Data Alignment
φ
Address bus
CSn
Figure 7.7 CSn Signal Output Timing (n = 0 to 7)
T
1
Area n external address
Bus cycle
T
2
H8S/2427, H8S/2427R, H8S/2425 Group
T
3
REJ09B0565-0100 Rev. 1.00
Jul 22, 2010
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