R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 774

• 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)
Rev.1.00 Dec. 13, 2005 Page 722 of 1286
REJ09B0158-0100
Bit
4
3
2
1
Bit Name
CIE
AIE
—
CRF
Initial
Value
0
0
Undefined R
Undefined R
R/W
R/W
R/W
Description
Carry Interrupt Enable Flag
Enables or disables interrupt generation when the carry
flag (CF) is set to 1.
0: Carry interrupt is not generated when CF flag is set
1: Carry interrupt is generated when CF flag is set to 1
Alarm Interrupt Enable Flag
Enables or disables interrupt generation when the
alarm flag (AF) is set to 1.
0: Alarm interrupt is not generated when AF flag is set
1: Alarm interrupt is generated when AF flag is set to 1
Reserved
The initial value of these bits is undefined. A write to
these bits is invalid, but the write value should always
be 0.
Carry Ready Flag
Indicates whether or not RSECCNT (second counter)
is in the state of the carry ready period.
This flag is set to 1 when the second counter value is
to be incremented after the 1 Hz bit in R64CNT (64 Hz
counter) has changed from 1 to 0.
However, writing to this bit is invalid, the write value
should always be 0.
0: Not carry ready period
[Clearing condition]
When RSECCNT is not in carry ready period
1: Carry ready period
[Setting condition]
When RSECCNT is in carry ready period
to 1
to 1