HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 410

• Manufacturer Part Number: HD6417751RF240V
• Description: MPU 1.5/3.3V 0K PB-FREE 256-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417751RF240V

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 240MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 39
• Program Memory Type: ROMless
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-QFP Exposed Pad, 256-eQFP, 256-HQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

11. Realtime Clock (RTC)
The procedure for setting the time while the clock is running is shown in figure 11.2 (b). This
method is useful for modifying only certain counter values (for example, only the second data or
hour data). If a carry occurs during the write operation, the write data is automatically updated and
there will be an error in the set data. The carry flag should therefore be used to check the write
status. If the carry flag (RCR1.CF) is set to 1, the write must be repeated.
The interrupt function can also be used to determine the carry flag status.
Rev.4.00 Oct. 10, 2008 Page 310 of 1122
REJ09B0370-0400