HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 622

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 17 Realtime Clock (RTC)
Figure 17.1 shows the block diagram of RTC.
Rev. 3.00 Jan. 18, 2008 Page 560 of 1458
REJ09B0033-0300
connected
Externally
[Legend]
RSECCNT:
RMINCNT:
RHRCNT:
RWKCNT:
RDAYCNT:
RMONCNT:
RYRCNT:
R64CNT:
RCR1:
circuit
EXTAL_RTC
XTAL_RTC
Second counter (8 bits)
Minute counter (8 bits)
Hour counter (8 bits)
Day of week counter (8 bits)
Date counter
Month counter (8 bits)
Year counter (16 bits)
64-Hz counter (8 bits)
RTC control register 1 (8 bits)
Oscillator
circuit
32.768kHz
RTC operation
control circuit
RCR1
RCR2
RCR3
Prescaler
Figure 17.1 RTC Block Diagram
RSECAR:
RMINAR:
RHRAR:
RWKAR:
RDAYAR:
RMONAR:
RYRAR:
RCR2:
RCR3:
RTCCLK (16kHz)
128Hz
Second alarm register (8 bits)
Minute alarm registger (8 bits)
Hour alarm register (8 bits)
Day of week alarm register (8 bits)
Date alarm register (8 bits)
Month alarm register (8 bits)
Year alarm register (16 bits)
RTC control register 2 (8 bits)
RTC control register 3
control circuit
R64CNT
Interrupt
RSECCNT
RDAYCNT
RMONCNT
RMINCNT
RHRCNT
RWKCNT
RYRCNT
RMONAR
RSECAR
RMINAR
RDAYAR
RWKAR
RHRAR
RYRAR
Count
ATI
PRI
CU
Interrupt
signals