HD64F3687GH Renesas Electronics America, HD64F3687GH Datasheet - Page 175

• Manufacturer Part Number: HD64F3687GH
• Description: IC H8 MCU FLASH 56K 64-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H Tinyr

Specifications of HD64F3687GH

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 45
• Program Memory Size: 56KB (56K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

The realtime clock (RTC) is a timer used to count time ranging from a second to a week. Figure
10.1 shows the block diagram of the RTC.
10.1
RTC3000A_000120030300
Counts seconds, minutes, hours, and day-of-week
Start/stop function
Reset function
Readable/writable counter of seconds, minutes, hours, and day-of-week with BCD codes
Periodic (seconds, minutes, hours, days, and weeks) interrupts
8-bit free running counter
Selection of clock source
Features
Section 10 Realtime Clock (RTC)
Rev.5.00 Nov. 02, 2005 Page 141 of 500
Section 10 Realtime Clock (RTC)
REJ09B0027-0500