HD6417750RF240DV Renesas Electronics America, HD6417750RF240DV Datasheet - Page 422

• Manufacturer Part Number: HD6417750RF240DV
• Description: MPU 3V 16K I-TEMP,PB-FREE 208-QF
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417750RF240DV

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 240MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 28
• Program Memory Type: ROMless
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 208-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 11 Realtime Clock (RTC)
3. Use the following method to write to an RTC register.
Rev.7.00 Oct. 10, 2008 Page 336 of 1074
REJ09B0366-0700
Note:
The operation of the RTC counter is stopped when RCR2.RTCEN is
cleared to 0. Therefore, using the above method will cause the RTC counter
value to fall behind the actual time by the amount of time that
RCR2.RTCEN was cleared to 0, and the cycle duration for cycle interrupt
generation will be lengthened as well.
Read all writeable counter registers (1)
Read all writeable counter registers (2)
Write to the register whose value is to
Compare the values of (1) and (2)
Are the compared values valid?
Write operation complete
Write 0 to RCR2.RTCEN
Write 1 to RCR2.RTCEN
be changed
Yes
No
Write the valid value