HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 189

• Manufacturer Part Number: HD64F36077GHV
• Description: 16BIT MCU FLASH 56K, SMD, LQFP64
• Manufacturer: Renesas Electronics America

Specifications of HD64F36077GHV

• No. Of I/o's: 47
• Ram Memory Size: 4KB
• Cpu Speed: 20MHz
• No. Of Timers: 4
• Digital Ic Case Style: LQFP
• Supply Voltage Range: 4.5V
• Core Size: 16bit
• Program Memory Size: 56KB
• Oscillator Type: External Only
• Controller Family/series: H8/300H
• Peripherals: ADC
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
• 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
RTC3000A_000020030300
Features
oscillator
32-kHz
RTCCSR:
RSECDR:
RMINDR:
RHRDR:
RWKDR:
RTCCR1:
RTCCR2:
PSS:
circuit
[Legend]
TMOW
Clock source select register
Second date register/free running counter data register
Minute date register
Hour date register
Day-of-week date register
RTC control register 1
RTC control register 2
Prescaler S
Section 10 Realtime Clock (RTC)
PSS
1/4
control circuit
Clock count
Figure 10.1 Block Diagram of RTC
control circuit
Rev. 1.00 Sep. 16, 2005 Page 159 of 490
RTCCSR
RSECDR
RMINDR
RTCCR1
RTCCR2
Interrupt
RWKDR
RHRDR
Section 10 Realtime Clock (RTC)
REJ09B0216-0100
Interrupt