R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 767
![IC SUPERH MPU ROMLESS 449-BGA](/photos/12/46/124616/r8a77800anbgav_sml.jpg)
R8A77800ANBGAV
Manufacturer Part Number
R8A77800ANBGAV
Description
IC SUPERH MPU ROMLESS 449-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R8A77800ANBGV.pdf
(1342 pages)
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R8A77800ANBGAV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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- Download datasheet (7Mb)
20.3.6
RDAYCNT is an 8-bit readable/writable register used as a counter for setting and counting the
BCD-coded day value in the RTC. It counts on the carry generated once per day by the hour
counter.
The setting range is decimal 01 to 31. 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.
RDAYCNT is not initialized by a power-on or manual reset.
The setting range for RDAYCNT depends on the month and whether the year is a leap year, so
care is required when making the setting. Taking the year counter (RYRCNT) value as the year,
leap year calculation is performed according to whether or not the value is divisible by 400, 100,
and 4.
Bits 7 and 6 are always read as 0. A write to these bits is invalid, but the write value should always
be 0.
Day Counter (RDAYCNT)
Initial value:
R/W:
BIt:
—
R
7
0
—
R
6
0
10-day units
R/W
—
5
R/W
—
4
R/W
—
3
Rev.1.00 Dec. 13, 2005 Page 715 of 1286
R/W
1-day units
—
2
R/W
—
1
Section 20 Realtime Clock (RTC)
R/W
—
0
REJ09B0158-0100
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