D6417729RHF200BV Renesas Electronics America, D6417729RHF200BV Datasheet - Page 518

• Manufacturer Part Number: D6417729RHF200BV
• Description: IC SUPER H MPU ROMLESS 208QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of D6417729RHF200BV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, FIFO, IrDA, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 96
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.85 V ~ 2.15 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 208-QFP Exposed Pad, 208-eQFP, 208-HQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

14.4
14.4.1
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.
14.4.2
The method of using the periodic interrupt function is shown in figure 14.6.
A periodic interrupt can be generated periodically at the interval set by the periodic interrupt
enable flag (PES) in RTC control register 2 (RCR2). When the time set by the periodic interrupt
enable flag (PES) has elapsed, the periodic interrupt flag (PEF) is set to 1.
The periodic interrupt flag (PEF) is cleared to 0 upon periodic interrupt generation when the
periodic interrupt enable flag (PES) is set. Periodic interrupt generation can be confirmed by
reading this bit, but normally the interrupt function is used.
14.4.3
Before switching the RTC to module standby, access at least one among the registers RTC, SCI,
and TMU.
Rev. 5.0, 09/03, page 470 of 806
Usage Notes
Register Writing during RTC Count
Use of Realtime Clock (RTC) Periodic Interrupts
Precautions when Using RTC Module Standby
Elapse of time set by PES
Figure 14.6 Using Periodic Interrupt Function
Set PES, clear PEF
Clear PEF
Set PES, and clear PEF to 0,
in RCR2
Clear PEF to 0