HD6417760BL200AV Renesas Electronics America, HD6417760BL200AV Datasheet - Page 453

• Manufacturer Part Number: HD6417760BL200AV
• Description: SH4 7760, 17 X17 256BGA, LCDC, U
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417760BL200AV

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: Audio Codec, CAN, EBI/EMI, FIFO, I²C, MFI, MMC, SCI, Serial Sound, SIM, SPI, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 69
• Program Memory Type: ROMless
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

10.6.8
The byte control SRAM interface is a memory interface that outputs a byte select strobe (WEn) in
both read and write bus cycles. This interface has 16-bit data pins and can be connected to SRAM
having upper byte select strobe and lower byte select strobe functions such as UB and LB.
Areas 1 and 4 can be specified as a byte control SRAM interface. However, when these areas are
set to MPX mode, MPX mode has priority.
The write timing for the byte control SRAM interface is identical to that of the normal SRAM
interface.
In read operations, on the other hand, the WEn pin timing is different. In a read access, only the
WE signal for the byte being read is asserted. Assertion is synchronized with the falling edge of
the CKIO clock in the same way as the WE signal, while negation is synchronized with the rising
edge of the CKIO clock in the same way as the RD signal.
Figure 10.55 MPX Interface Timing 12 (Burst Write Cycle, AnW = 1, One External Wait
Byte Control SRAM Interface
Note: For DACKn, an example is shown where CHCRn.AL (acknowledge level) = 0 for the DMAC.
CKIO
RD/FRAME
D31−D0
CSn
RD/WR
RDY
BS
DACKn
(DA)
Inserted, 32-Bit Bus Width, 64-Bit Data Transfer)
Tm1
A
Tmd1w
Tmd1w
D0
Tmd1
Rev. 2.00 Feb. 12, 2010 Page 369 of 1330
Tmd2
D1
REJ09B0554-0200