R4F24268NVRFQV Renesas Electronics America, R4F24268NVRFQV Datasheet - Page 300
![MCU 256KB FLASH 48K 144-LQFP](/photos/28/61/286117/144-lqfp__plqp0144ka-a_sml.jpg)
R4F24268NVRFQV
Manufacturer Part Number
R4F24268NVRFQV
Description
MCU 256KB FLASH 48K 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2400r
Datasheet
1.R4F24268NVZFQV.pdf
(1406 pages)
Specifications of R4F24268NVRFQV
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
-
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Part Number:
R4F24268NVRFQV
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Section 6 Bus Controller (BSC)
When the interval specification from the PALL command to the REF command cannot be
satisfied, setting the RCW1 and RCW0 bits of REFCR enables one to three wait states to be
inserted after the T
number of waits according to the synchronous DRAM connected and the operating frequency of
this LSI. Figure 6.67 shows the timing when one wait state is inserted. Since the setting of bits
TPC1 and TPC0 of DRACCR is also valid in refresh cycles, the command interval can be
extended by the RCW1 and RCW0 bits after the precharge cycles.
Page 270 of 1372
Address bus
Precharge-sel
SDRAMφ
CKE
Rp
RAS
CAS
WE
cycle that is set by the TPC1 and TPC0 bits of DRACCR. Set the optimum
φ
PALL
Figure 6.66 Auto Refresh Timing
T Rp
REF
T Rr
High
T Rc1
NOP
H8S/2426, H8S/2426R, H8S/2424 Group
T Rc2
REJ09B0466-0350 Rev. 3.50
Jul 09, 2010
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