DF2218BR24V Renesas Electronics America, DF2218BR24V Datasheet - Page 405

• Manufacturer Part Number: DF2218BR24V
• Description: IC H8S/2218 MCU FLASH 112-LFBGA
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of DF2218BR24V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 24MHz
• Connectivity: SCI, SmartCard, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 69
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 12K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 6x10b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 112-LFBGA
• For Use With: HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)3DK2218-SS - KIT DEV H8S/2218 WINDOWS SIDESHW3DK2218 - DEV EVAL KIT H8S/2218
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

The realtime clock (RTC) is a timer used to count time ranging from a second to a week. Figure
11.1 shows the block diagram of the RTC.
11.1
• 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
• 8-bit bus (3 cycle access timing) connected to the external bus
RTC register is allocated to a part of area 7 of external address (H'FFFF48 to H'FFFF4F)
Features
oscillator
32-kHz
circuit
Legend:
RTCCSR:
RSECDR:
RMINDR:
RHRDR:
RWKDR:
RTCCR1:
RTCCR2:
PSS:
Section 11 Realtime Clock (RTC)
TMOW
Clock source select register
Second date register
Minute date register
Hour date register
Day-of-week date register
RTC control register 1
RTC control register 2
Prescaler S
1/4
Figure 11.1 Block Diagram of RTC
PSS
control circuit
Clock count
control circuit
RSECDR
RTCCSR
RMINDR
RTCCR1
RTCCR2
Interrupt
RWKDR
RHRDR
Rev.7.00 Dec. 24, 2008 Page 349 of 698
Interrupt IRQ5
REJ09B0074-0700