R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 852
R5S77631Y266BGV
Manufacturer Part Number
R5S77631Y266BGV
Description
IC SUPERH MPU ROMLESS 499BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R5S77631Y266BGV.pdf
(2056 pages)
Specifications of R5S77631Y266BGV
Core Processor
SH-4A
Core Size
32-Bit
Speed
266MHz
Connectivity
Audio Codec, I²C, MMC, SCI, SIM, SIO, SSI, USB
Peripherals
DMA, LCD, POR, WDT
Number Of I /o
107
Program Memory Type
ROMless
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.15 V ~ 1.35 V
Data Converters
A/D 4x10b; D/A 2x8b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
499-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R5S77631Y266BGV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 22 Realtime Clock (RTC)
22.5.3
The use of the alarm function is illustrated in figure 22.4.
An alarm can be generated by the second, minute, hour, day-of-week, day, month, or year value,
or a combination of these. Write 1 to the ENB bit in the alarm registers involved in the alarm
setting, and set the alarm time in the lower bits. Write 0 to the ENB bit in registers not involved in
the alarm setting.
When the counter and the alarm time match, RCR1.AF is set to 1. Alarm detection can be
confirmed by reading this bit, but normally an interrupt is used. If 1 has been written to
RCR1.AIE, an alarm interrupt is generated in the event of alarm, enabling the alarm to be
detected.
Rev. 2.00 May 22, 2009 Page 782 of 1982
REJ09B0256-0200
Alarm Function
(Wait for interrupt or check alarm flag)
Disable alarm interrupts
Enable alarm interrupts
Monitor alarm time
Clear alarm flag
Set alarm time
Figure 22.4 Example of Use of Alarm Function
Clock running
Clear RCR1.AIE to prevent erroneous interrupts.
Be sure to reset the flag as it may have been
set during alarm time setting.
Set RCR1.AIE to 1.
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