R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 908

• 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 14 8-Bit Timers (TMR)
14.4.5
TCNT is cleared at the rising edge, falling edge, low level, or high level of an external reset input,
depending on the settings of the CCLR1 and CCLR0 bits in TCR and the TMRIS bit in TCCR.
The clear pulse width must be at least 1.5 states for a single edge and at least 2.5 states for both
edges. Figure 14.9 shows the timing of this operation.
14.4.6
The OVF in TCSR is set to 1 when TCNT overflows (changes from H'FF to H'00). Figure 14.10
shows the timing of this operation.
Page 878 of 1448
φ
External reset
input pin
Clear signal
TCNT
Timing of TCNT External Reset
Timing of Overflow Flag (OVF) Setting
φ
TCNT
Overflow signal
OVF
Figure 14.9 Timing of Clearance by External Reset
Figure 14.10 Timing of OVF Setting
N – 1
H'FF
N
H'00
H8S/2427, H8S/2427R, H8S/2425 Group
REJ09B0565-0100 Rev. 1.00
H'00
Jul 22, 2010