R8A77850ANBGV Renesas Electronics America, R8A77850ANBGV Datasheet - Page 72
R8A77850ANBGV
Manufacturer Part Number
R8A77850ANBGV
Description
IC SUPERH MPU ROMLESS 436-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R8A77850AADBGV.pdf
(1694 pages)
Specifications of R8A77850ANBGV
Core Processor
SH-4A
Core Size
32-Bit
Speed
600MHz
Connectivity
Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
Peripherals
DMA, POR, WDT
Number Of I /o
108
Program Memory Type
ROMless
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
1 V ~ 1.2 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
436-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:
R8A77850ANBGV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 72 of 1694
- Download datasheet (9Mb)
2. Programming Model
2.4
Register operands are always longwords (32 bits). When a memory operand is only a byte (8 bits)
or a word (16 bits), it is sign-extended into a longword when loaded into a register.
2.5
Memory data formats are classified into bytes, words, and longwords. Memory can be accessed in
an 8-bit byte, 16-bit word, or 32-bit longword form. A memory operand less than 32 bits in length
is sign-extended before being loaded into a register.
A word operand must be accessed starting from a word boundary (even address of a 2-byte unit:
address 2n), and a longword operand starting from a longword boundary (even address of a 4-byte
unit: address 4n). An address error will result if this rule is not observed. A byte operand can be
accessed from any address.
Big endian or little endian byte order can be selected for the data format. The endian should be set
with the external pin after a power-on reset. The endian cannot be changed dynamically. Bit
positions are numbered left to right from most-significant to least-significant. Thus, in a 32-bit
longword, the leftmost bit, bit 31, is the most significant bit and the rightmost bit, bit 0, is the least
significant bit.
The data format in memory is shown in figure 2.7.
Rev.1.00 Jan. 10, 2008 Page 40 of 1658
REJ09B0261-0100
Data Formats in Registers
Data Formats in Memory
Figure 2.6 Formats of Byte Data and Word Data in Register
31
31
S
S
15
15
S
S
14
14
S
7
S
7
6
6
0
0
0
0
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