R4F24568NVFQV Renesas Electronics America, R4F24568NVFQV Datasheet - Page 963
![MCU 128KKB FLASH 48K 144-LQFP](/photos/28/61/286117/144-lqfp__plqp0144ka-a_sml.jpg)
R4F24568NVFQV
Manufacturer Part Number
R4F24568NVFQV
Description
MCU 128KKB FLASH 48K 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2400r
Specifications of R4F24568NVFQV
Core Processor
H8S/2600
Core Size
16/32-Bit
Speed
32MHz
Connectivity
EBI/EMI, I²C, IrDA, SCI, SSU, UART/USART, USB
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 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
Eeprom Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R4F24568NVFQV
Manufacturer:
REA
Quantity:
15
Company:
Part Number:
R4F24568NVFQV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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H8S/2456, H8S/2456R, H8S/2454 Group
Section 15 Serial Communication Interface (SCI, IrDA)
15.7.8
Clock Output Control
When the GM bit in SMR is set to 1, the clock output level can be fixed with bits CKE1 and
CKE0 in SCR. At this time, the minimum clock pulse width can be made the specified width.
Figure 15.31 shows the timing for fixing the clock output level. In this example, GM is set to 1,
CKE1 is cleared to 0, and the CKE0 bit is controlled.
CKE0
SCK
Specified pulse width
Specified pulse width
Figure 15.31 Timing for Fixing Clock Output Level
When turning on the power or switching between Smart Card interface mode and software
standby mode, the following procedures should be followed in order to maintain the clock duty
cycle.
Powering On: To secure the clock duty cycle from power-on, the following switching procedure
should be followed.
1. The initial state is port input and high impedance. Use a pull-up resistor or pull-down resistor
to fix the potential.
2. Fix the SCK pin to the specified output level with the CKE1 bit in SCR.
3. Set SMR and SCMR, and switch to Smart Card mode operation.
4. Set the CKE0 bit in SCR to 1 to start clock output.
REJ09B0467-0350 Rev. 3.50
Page 933 of 1392
Jul 07, 2010
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