R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 682

• Manufacturer Part Number: R5S77631Y266BGV
• Description: IC SUPERH MPU ROMLESS 499BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

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: -

Section 14 Direct Memory Access Controller (DMAC)
14.4.7
Figures 14.13 to 14.16 show the sample timing of the DREQ input in each bus mode, respectively.
Rev. 2.00 May 22, 2009 Page 612 of 1982
REJ09B0256-0200
Figure 14.14 Example of DREQ Input Detection in Cycle Steal Mode Level Detection
Figure 14.13 Example of DREQ Input Detection in Cycle Steal Mode Edge Detection
DREQ Pin Sampling Timing
DACK
(Low-active)
CLKOUT
Bus cycle
DREQ
(Overrun 0,
Low-level)
DRAK
(Low-active)
DACK
(Low-active)
CLKOUT
Bus cycle
DREQ
(Overrun 1,
Low-level)
DRAK
(Low-active)
DREQ
(Rising edge)
DRAK
(Low-active)
DACK
(Low-active)
Bus cycle
CKOUT
1st acceptance
1st acceptance
1st acceptance
: Non-sensitive period
: Non-sensitive period
CPU
CPU
CPU
DMAC
DMAC
DMAC
2nd acceptance
2nd acceptance
Acceptance started
Acceptance
started
2nd acceptance
CPU
CPU
CPU
Acceptance started