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Section 1 Overview
Page 22 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
Classification Symbol I/O Name Function
Bus control RAS O RAS Connected to the RAS pin when
SDRAM is connected.
CAS O CAS Connected to the CAS pin when
SDRAM is connected.
CKE O CK enable Connected to the CKE pin when
SDRAM is connected.
CE1A, CE1B O Lower byte select
for PCMCIA card
Connected to PCMCIA card select
signals D7 to D0.
CE2A, CE2B O Upper byte select
for PCMCIA card
Connected to PCMCIA card select
signals D15 to D8.
ICIOWR O Write strobe for
PCMCIA
Connected to the PCMCIA I/O write
strobe signal.
ICIORD O Read strobe for
PCMCIA
Connected to the PCMCIA I/O read
strobe signal.
WE O Write strobe for
PCMCIA memory
Connected to the PCMCIA memory
write strobe signal.
IOIS16 I PCMCIA dynamic
bus sizing
Indicates 16-bit I/O of the PCMCIA.
Direct memory
access controller
DREQ1, DREQ0 I DMA-transfer
request
Input pins to receive external
requests for DMA transfer.
Only DREQ0 can be used in the
SH7262 Group.
DACK1, DACK0 O DMA-transfer
request accept
Output pins for signals indicating
acceptance of external requests
from external devices.
Only DACK0 can be used in the
SH7262 Group.
TEND1, TEND0 O DMA-transfer end
output
Output pins for DMA transfer end.
Only TEND0 can be used in the
SH7262 Group.