R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 441

• 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: -

When software wait insertion is specified by CSnWCR, the external wait input signal (RDY) is
also sampled. The RDY signal sampling timing is shown in figure 11.10, where a single wait cycle
is specified as a software wait. The RDY signal is sampled at the transition from the Tw state to
the T2 state. Therefore, the assertion of the RDY signal has no effect in the T1 cycle or in the first
Tw cycle. The RDY signal is sampled on the rising edge of the clock.
Figure 11.10 SRAM Interface Wait Cycle Timing (Wait Cycle Insertion by RDY Signal)
CLKOUT
A25 to A0
CSn
RDWR
RD
(read)
D31 to D0
(read)
WEn
(Write)
D31 to D0
(Write)
BS
RDY
DACKn
(DA)
DA: Dual address DMA
T
1
T
w
T
we
Section 11 Local Bus State Controller (LBSC)
Rev. 2.00 May 22, 2009 Page 371 of 1982
T
2
REJ09B0256-0200