R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 1258

• Manufacturer Part Number: R4F24278NVFQU
• Description: MCU 512K/48K 2.7-5.5V 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

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

Section 26 Power-Down Modes
26.2
26.2.1
When bits STC1 and STC0 in PLLCR are set to 11, a transition is made to clock division mode,
and the system clock frequency is divided with respect to the oscillator frequency. Clock division
mode is cancelled by clearing bits STC1 and STC0 to a value other than 11. The timings of
transition and clearing depend on the STCS bit setting in SCKCR. For the operation at transition
and clearing, see section 25.3, System-Clock PLL Circuit and Divider.
If a SLEEP instruction is executed while the SSBY bit in SBYCR is cleared to 0, the chip enters
sleep mode. When sleep mode is cleared by an interrupt, clock division mode is restored.
If a SLEEP instruction is executed while the SSBY bit in SBYCR is set to 1, the chip enters
software standby mode. When software standby mode is cleared by an external or internal
interrupt, clock division mode is restored.
When the RES pin is driven low, the reset state is entered and clock division mode is cleared. The
same applies to a reset caused by watchdog timer overflow.
When the STBY pin is driven low, a transition is made to hardware standby mode.
Page 1228 of 1448
Operation
Clock Division Mode
H8S/2427, H8S/2427R, H8S/2425 Group
REJ09B0565-0100 Rev. 1.00
Jul 22, 2010