R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 307
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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H8S/2427, H8S/2427R, H8S/2425 Group
Section 7 Bus Controller (BSC)
When the interval specification from the REF command to the ACTV cannot be satisfied, setting
the RLW1 and RLW0 bits of REFCR enables one to three wait states to be inserted in the refresh
cycle. Set the optimum number of waits according to the synchronous DRAM connected and the
operating frequency of this LSI. Figure 7.68 shows the timing when one wait state is inserted.
T
T
T
T
T
Rp
Rr
Rr1
Rcw
Rc2
SDRAMφ
Address bus
Precharge-sel
RAS
CAS
WE
CKE
High
NOP
PALL
REF
Figure 7.68 Auto Refresh Timing
(TPC1 = 0, TPC0 = 0, RLW1 = 0, RLW0 = 1)
REJ09B0565-0100 Rev. 1.00
Page 277 of 1448
Jul 22, 2010
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