r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 433
r8a77850anbg
Manufacturer Part Number
r8a77850anbg
Description
Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R8A77850ANBG.pdf
(1692 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
r8a77850anbgV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 433 of 1692
- Download datasheet (8Mb)
11. Local Bus State Controller (LBSC)
11.5.3
SRAM interface
(1)
Basic Timing
The strobe signals for the SRAM interface in this LSI are output primarily based on the SRAM
connection. Figure 11.5 shows the basic timing of the SRAM interface. Normal access without
wait cycles is completed in two cycles. The BS signal is asserted for one or two cycles to indicate
the start of a bus cycle. The CSn signal is asserted at the rising edge of the clock in the T1 state,
and negated at the next rising edge of the clock in the T2 state. Therefore, there is no negation
period in accesses at minimum pitch.
In reading, an access size is not specified. The output of an access address on the address pins
(A25 to A0) is correct, however, since the access size is not specified, 32-bit data is always output
when a 32-bit device is in use, and 16-bit data is output when a 16-bit device is in use. During
writing, only the WE signal corresponding to the byte to be written is asserted. For details, see
section 11.5.1, Endian/Access Size and Data Alignment.
In 32-byte transfer, a total of 32 bytes are transferred continuously according to the bus width set.
The first access is performed on the data for which an access request is issued, and the remaining
accesses are performed in wraparound method according to the set bus width. The bus is not
released during this transfer.
Rev.1.00 Jan. 10, 2008 Page 403 of 1658
REJ09B0261-0100
Related parts for r8a77850anbg
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Renesas Technology Corp [Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series]
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
RENESAS MCU M16C FAMILY / M16C/Tiny SERIES
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Renesas Starter Kit for RX210
Manufacturer:
Renesas Electronics Corporation.
Part Number:
Description:
EVALBOARD/Renesas StarterKit for RX630
Manufacturer:
Renesas Electronics Corporation.
Part Number:
Description:
EVALBOARD/Renesas Starter Kit+ for RX63N
Manufacturer:
Renesas Electronics Corporation.
Part Number:
Description:
EVALBOARD/Renesas Starter Kit
Manufacturer:
Renesas Electronics Corporation.
Part Number:
Description:
FLASH PROGRAMMER FOR RENESAS MICROCONTROLLERS
Manufacturer:
Renesas Electronics Corporation.
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet: