SH7205 Datasheet, PDF (298/1904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 10 Bus State Controller (BSC)
Pin Name
WE1/BC1/DQM1
WE0/BC0/DQM0
SDCS1, SDCS0
RAS
CAS
CKE
SDWE
WAIT
I/O
Output
Output
Output
Output
Output
Output
Output
Input
Function
Controls access via D15 to D8.
• Enables writing to the data area corresponding to D15 to D8
when a normal space is accessed in byte-write strobe mode
(WE1).
• Connects to the byte select pin of a byte-select SRAM when a
normal space is accessed in one-write strobe mode (BC1).
• Controls access to SDRAM if it is connected (DQM1).
Controls access via D7 to D0.
• Enables writing to the data area corresponding to D7 to D0
when a normal space is accessed in byte-write strobe mode
(WE0).
• Connects to the byte select pin of a byte-select SRAM when a
normal space is accessed in one-write strobe mode (BC0).
• Controls access to SDRAM if it is connected (DQM0).
Connects to the CS pin if SDRAM is connected.
Connects to the RAS pin if SDRAM is connected.
Connects to the CAS pin if SDRAM is connected.
Connects to the CKE pin if SDRAM is connected.
Connects to the WE pin of SDRAM if SDRAM is connected
(SDWE).
External wait input
Rev. 1.00 Mar. 25, 2008 Page 266 of 1868
REJ09B0372-0100