R8A77850AADBGV Renesas Electronics America, R8A77850AADBGV Datasheet - Page 753
R8A77850AADBGV
Manufacturer Part Number
R8A77850AADBGV
Description
IC SUPERH MCU 436-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R8A77850AADBGV.pdf
(1694 pages)
Specifications of R8A77850AADBGV
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
-40°C ~ 85°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:
R8A77850AADBGV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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14.4.7
Figures 14.13 to 14.22 show the timing that the DREQ input is sampled in each bus mode.
Figures 14.13, 14.16, and 14.20 show the timing that the DREQ input is sampled when byte
transfer is performed in 8-, 16-, 32-, or 64-bit bus width, word transfer is performed in 16-, 32-, or
64-bit bus width, or longword transfer is performed in 32- or 64-bit bus width. DACK is output
once in DMA1 transfer.
Figures 14.14, 14.17, and 14.21 show the timing that the DREQ input is sampled when word
transfer is performed in 8-bit bus width, longword transfer is performed in 8- or 16-bit bus width,
or 16- or 32-byte transfer is performed in 8-, 16-, 32-, or 64-bit bus width. These figures suppose
that DACK of DMA1 transfer is divided.
Figures 14.15, 14.18, and 14.22 show the timing that the DREQ input is sampled when word
transfer is performed in 8-bit bus width, longword transfer is performed in 8- or 16-bit bus width,
or 16- or 32-byte transfer is performed in 8-, 16-, 32-, or 64-bit bus width. These figures suppose
that DACK of DMA1 transfer is connected.
When word transfer is performed in 8-bit bus width, longword transfer is performed in 8- or 16-bit
bus width, or 16- or 32-byte transfer is performed in 8-, 16-, 32-, or 64-bit bus width, DMA
transfer units are divided into multiple bus cycles. If DMA transfer size is divided into multiple
bus cycles and CS is negated between bus cycles, DACK output is divided, like CS. For details,
see section 11.5.16, Register Settings for Divided-Up DACKn Output.
(Byte Transfer in 8/16/32/64-Bit Bus Width, Word Transfer in 16/32/64-Bit Bus Width, or
Figure 14.13 Example 1 of DREQ Input Detection in Cycle Steal Mode Edge Detection
DREQ Pin Sampling Timing
CLKOUT
Bus cycle
DREQ
(Rising edge)
DRAK
(High-active)
DACK
(High-active)
Longword Transfer in 32/64-Bit Bus Width)
1st acceptance
: Non-sensitive period
CPU
DMAC
2nd acceptance
Acceptance started
Accepted after one cycle of CLKOUT
at the rising edge of DACK
14. Direct Memory Access Controller (DMAC)
CPU
Rev.1.00 Jan. 10, 2008 Page 721 of 1658
REJ09B0261-0100
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