R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 776

• 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 724 of 1286
REJ09B0158-0100
Bit
7
6 to 4
3
Bit Name
PEF
PES[2:0]
RTCEN
Initial
Value
Undefined R/W
All 0
1
R/W
R/W
R/W
Description
Periodic Interrupt Flag
Indicates interrupt generation at the interval specified
by bits PES2–PES0. When this flag is set to 1, a
periodic interrupt is generated.
0: Interrupt is not generated at interval specified by bits
[Clearing condition]
When 0 is written to PEF
1: Interrupt is generated at interval specified by bits
[Setting conditions]
Generation of interrupt at interval specified by bits
PES2–PES0
When 1 is written to PEF
Periodic Interrupt Enable
These bits specify the period for periodic interrupts.
000: No periodic interrupt generation
001: Periodic interrupt generated at 1/256-second
010: Periodic interrupt generated at 1/64-second
011: Periodic interrupt generated at 1/16-second
100: Periodic interrupt generated at 1/4-second
101: Periodic interrupt generated at 1/2-second
110: Periodic interrupt generated at 1-second intervals
111: Periodic interrupt generated at 2-second intervals
Oscillator Enable
Controls the operation of the RTC's crystal oscillator.
0: RTC crystal oscillator is halted
1: RTC crystal oscillator is operated
PES2–PES0
PES2–PES0
intervals
intervals
intervals
intervals
intervals