SH7730 Datasheet, PDF (70/1188 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7780 Series

Section 1 Overview
Classification Symbol
Function
I/O Description
Bus control
WE0/DQMLL
Select signal for Output Indicates that D7 to D0 are being written to.
D7 to D0
Connected to the byte select signal when a byte-
/DQM (SDRAM)
selection SRAM is connected.
Corresponds to select signals D7 to D0 when the
SDRAM is used.
RAS
RAS (SDRAM) Output Connects to RAS pin when SDRAM is connected.
CAS
CAS (SDRAM) Output Connects to CAS pin when SDRAM is connected.
CKE
CK enable
(SDRAM)
Output Connects to CKE pin when SDRAM is connected.
IOIS16
PCMCIA 16 bits Input
I/O
PCMCIA 16-bit I/O signal
Valid only in little endian mode.
Pulled low in big endian mode.
WAIT
Hardware wait Input External wait input
request
BREQ
BACK
Bus Request
Bus
acknowledge
Input Bus request input
Output Bus acknowledge output
REFOUT
Refresh request Output Refresh request output when a bus is released
Direct memory
access
controller
(DMAC)
DREQ0,
DREQ1
DMA transfer Input DMA transfer request input from external device.
request
DACK0,
DACK1
DMA transfer
request
acknowledge
Output Strobe as a response to the DMA transfer request,
which is output to external device
TEND0,
TEND1
DMA transfer Output DMA transfer end output to external device
end notification
16-bits timer
pulse unit
(TPU)
TPU0TO3 to
TPU0TO0,
TPU1TO1,
TPU1TO0
Compare match Output Compare match output/PMW output pin
output
Realtime clock EXTAL_RTC Crystal
(RTC)
resonator
connection
Output Connects the crystal resonator for the RTC.
XTAL_RTC
Crystal
resonator
connection
Input Connects the crystal resonator for the RTC.
Rev. 1.00 Sep. 19, 2007 Page 22 of 1136
REJ09B0359-0100