R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 838
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
Company
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)
22.4.5
RWKCNT is an 8-bit readable/writable register used as a counter for setting and counting the
BCD-coded day-of-week value in the RTC. It counts on the carry generated once per day by the
hour counter.
The setting range is decimal 0 to 6. The RTC will not operate normally if any other value is set.
Write processing should be performed after stopping the count with the START bit in RCR2, or
by using the carry flag.
RWKCNT is not initialized by a power-on or manual reset.
Bits 7 to 3 are always read as 0. A write to these bits is invalid, but the write value should always
be 0.
Rev. 2.00 May 22, 2009 Page 768 of 1982
REJ09B0256-0200
Day-of-week code
Day of week
Day-of-Week Counter (RWKCNT)
Initial value:
0
Sun
R/W:
Bit:
—
R
7
0
1
Mon
—
R
6
0
—
R
5
0
2
Tue
—
R
4
0
—
R
3
0
3
Wed
R/W
Day-of-week code
—
2
R/W
—
4
Thu
1
R/W
—
0
5
Fri
6
Sat
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