R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 760

• Manufacturer Part Number: R8A77800ANBGAV
• Description: IC SUPERH MPU ROMLESS 449-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R8A77800ANBGAV

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 400MHz
• Connectivity: Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
• Peripherals: DMA, POR, WDT
• Number Of I /o: 75
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.15 V ~ 1.35 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 449-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 20 Realtime Clock (RTC)
20.1.1
Figure 20.1 shows a block diagram of the RTC.
Rev.1.00 Dec. 13, 2005 Page 708 of 1286
REJ09B0158-0100
RSECCNT
RSECAR
R64CNT
RTCCLK
Prescaler
Block Diagram
16.384 kHz
128 Hz
RMINCNT
RMINAR
Counter unit
Figure 20.1 Block Diagram of RTC
XTAL2
RHRCNT
RHRAR
32.768 kHz
oscillator
crystal
RTC
Bus interface
RDAYCNT
RDAYAR
EXTAL2
To registers
control unit
AT
Interrupt
I
PRI
RWKCNT
RWKAR
CUI
peripheral bus
RTC operation
RMONCNT
RMONAR
control unit
RCR3
RYRCNT
RCR1
RCR2
RYRAR