R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 773

• 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: -

20.3.16 RTC Control Register 1 (RCR1)
RCR1 is an 8-bit readable/writable register containing a carry flag and alarm flag, plus flags to
enable or disable interrupts for these flags.
The CIE and AIE bits are initialized to 0 by a power-on or manual reset; the value of bits other
than CIE and AIE is undefined.
Bit
7
6 to 5
Bit Name
CF
—
Initial value:
Initial
Value
Undefined R/W
Undefined R
R/W:
BIt:
R/W
CF
—
7
R/W
—
—
R
6
Description
Carry Flag
This flag is set to 1 on generation of a second counter
carry, or a 64 Hz counter carry when the 64 Hz counter
is read. The count register value read at this time is not
guaranteed, and so the count register must be read
again.
0: No second counter carry, or 64 Hz counter carry
[Clearing condition]
When 0 is written to CF
1: Second counter carry, or 64 Hz counter carry when
[Setting conditions]
Generation of a second counter carry, or a 64 Hz
counter carry when the 64 Hz counter is read
When 1 is written to CF
Reserved
The initial value of these bits is undefined. A write to
these bits is invalid, but the write value should always
be 0.
—
—
R
5
when 64 Hz counter is read
64 Hz counter is read
R/W
CIE
4
0
R/W
AIE
3
0
Rev.1.00 Dec. 13, 2005 Page 721 of 1286
—
—
R
2
CRF
—
R
1
Section 20 Realtime Clock (RTC)
R/W
AF
—
0
REJ09B0158-0100