R4F24268NVRFQV Renesas Electronics America, R4F24268NVRFQV Datasheet - Page 237
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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H8S/2426, H8S/2426R, H8S/2424 Group
6.5.6
Some external I/O devices require a setup time and hold time between address and CS signals and
strobe signals such as RD, HWR, and LWR. Settings can be made in the CSACR register to insert
states in which only the CS, AS, and address signals are asserted before and after a basic bus space
access cycle. Extension of the CS assertion period can be set for individual areas. With the CS
assertion extension period in write access, the data setup and hold times are less stringent since the
write data is output to the data bus.
Figure 6.20 shows an example of the timing when the CS assertion period is extended in basic bus
3-state access space.
REJ09B0466-0350 Rev. 3.50
Jul 09, 2010
Read
(when
RDNn = 0)
Write
Figure 6.20 Example of Timing when Chip Select Assertion Period Is Extended
Extension of Chip Select (CS) Assertion Period
φ
Address bus
CSn
AS
RD
Data bus
HWR, LWR
Data bus
T
h
T
1
Bus cycle
T
Write data
2
Read data
T
Section 6 Bus Controller (BSC)
3
Page 207 of 1372
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