HD6417706F133 Renesas Electronics America, HD6417706F133 Datasheet - Page 411

• Manufacturer Part Number: HD6417706F133
• Description: IC SUPERH MPU ROMLESS 176LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417706F133

• Core Processor: SH-3
• Core Size: 32-Bit
• Speed: 133MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 103
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.75 V ~ 2.05 V
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 176-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

13.5
13.5.1
The following RTC registers cannot be written to during an RTC count (while bit 0 = 1 in RCR2).
RSECCNT, RMINCNT, RHRCNT, RDAYCNT, RWKCNT, RMONCNT, RYRCNT
The RTC count must be halted before writing to any of the above registers.
13.5.2
The method of using the periodic interrupt function is shown in figure 13.6.
A periodic interrupt can be generated periodically at the interval set by the periodic interrupt
enable flag (PES0 to PES2) in RCR2. When the time set by the PES0 to PES2 has elapsed, the
PEF is set to 1.
The PEF is cleared to 0 upon periodic interrupt generation when the periodic interrupt enable flag
(PES0 to PES2) is set. Periodic interrupt generation can be confirmed by reading this bit, but
normally the interrupt function is used.
Usage Note
Register Writing during RTC Count
Use of Realtime Clock (RTC) Periodic Interrupts
Figure 13.6 Using Periodic Interrupt Function
Elapse of time set by PES
Set PES, clear PEF
Clear PEF
Set PES0 to PES2,
and clear PEF to 0,
in RCR2
Clear PEF to 0
Rev. 5.00 May 29, 2006 page 361 of 698
Section 13 Realtime Clock (RTC)
REJ09B0146-0500