DS72011RB120FPV Renesas Electronics America, DS72011RB120FPV Datasheet - Page 691

• Manufacturer Part Number: DS72011RB120FPV
• Description: IC SH7201 MPU ROMLESS 176LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7200r

Specifications of DS72011RB120FPV

• Core Size: 32-Bit
• Core Processor: SH-2A
• Speed: 120MHz
• Connectivity: CAN, EBI/EMI, FIFO, I²C, SCI, Serial Sound
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 104
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 70°C
• Package / Case: 176-LQFP
• No. Of I/o's: 109
• Ram Memory Size: 32KB
• Cpu Speed: 120MHz
• Digital Ic Case Style: LQFP
• Supply Voltage Range: 3V To 3.6V
• Operating Temperature Range: -20°C To +70°C
• Embedded Interface Type: I2C, SSI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: R0K572011S000BE - KIT STARTER FOR SH7201HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

SH7201 Group
15.4.3
Figure 15.3 shows how to read the time.
If a carry occurs while reading the time, the correct time will not be obtained, so it must be read
again. Part (a) in figure 15.3 shows the method of reading the time without using interrupts; part
(b) in figure 15.3 shows the method using carry interrupts. To keep programming simple, method
(a) should normally be used.
R01UH0026EJ0300 Rev. 3.00
Sep 24, 2010
Reading Time
Yes
Yes
(a) To read the time without using interrupts
(b) To read the time using interrupts
Disable the carry interrupt
Disable the carry interrupt
Enable the carry interrupt
Read counter register
Read counter register
Clear the carry flag
Clear the carry flag
Clear the carry flag
Carry flag = 1?
interrupt
Figure 15.3 Reading Time
No
No
Write 0 to CF in RCR1
(Set AF in RCR1 to 1 so that alarm
Read RCR1 and check CF bit
Write 0 to CIE in RCR1
Write 0 to CIE in RCR1
Write 0 to CF in RCR1
(Set AF in RCR1 to 1 so that alarm
Read RCR1 and check CF bit
Write 1 to CIE in RCR1
flag is not cleared.)
flag is not cleared.)
Section 15 Realtime Clock (RTC)
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