Datasheet
R01DS0052EJ0140 Rev.1.40 Page 41 of 150
2014.07.16
RX62N Group, RX621 Group 1. Overview
Bus control RD# Output Strobe signal which indicates that reading from the external bus
interface space is in progress.
WR# Output Strobe signal which indicates that writing to the external bus
interface space is in progress, in 1-write strobe mode.
WR0# to WR3# Output Strobe signals which indicate that any group of data bus pins
(D7 to D0, D15 to D8, D23 to D16, and D31 to D24) is valid in
writing to the external bus interface space, in byte strobe mode.
BC0# to BC3# Output Strobe signals which indicate that any group of data bus pins
(D7 to D0, D15 to D8, D23 to D16, and D31 to D24) is valid in
access to the external bus interface space, in 1-write strobe
mode.
WE# Output Output pin for SDRAM write enable signals.
CAS# Output Output pin for SDRAM column address strobe signals.
RAS# Output Output pin for SDRAM row address strobe signals.
CKE Output Output pin for SDRAM clock enable signals.
DQM0 to DQM34 Output Output pins for SDRAM I/O data mask enable signals.
SDCS# Output Output pin for SDRAM chip select signals.
CS0#-A/CS0#-B
CS1#-A/CS1#-B/CS1#-C
CS2#-A/CS2#-B/CS2#-C
CS3#-A/CS3#-B/CS3#-C
CS4#-A/CS4#-B/CS4#-C
CS5#-A/CS5#-B/CS5#-C
CS6#-A/CS6#-B/CS6#-C
CS7#-A/CS7#-B/CS7#-C
Output Select signals for areas 0 to 7.
WAIT#-A/WAIT#-B/
WAIT#-C/WAIT#-D
Input Input pins for wait request signals in access to the external
space.
EXDMA controller EDREQ0-A/EDREQ0-B/
EDREQ0-C
Input Input pins for external DMA transfer requests of channel 0.
EDREQ1-A/EDREQ1-B/
EDREQ1-C
Input Input pins for external DMA transfer requests of channel 1.
EDACK0-A/EDACK0-B/
EDACK0-C
Output Output pins for single address transfer acknowledge signals of
channel 0.
EDACK1-A/EDACK1-B/
EDACK1-C
Output Output pins for single address transfer acknowledge signals of
channel 1.
Interrupt NMI Input Non-maskable interrupt request signal.
IRQ0-A/IRQ0-B
IRQ1-A/IRQ1-B
IRQ2-A/IRQ2-B
IRQ3-A/IRQ3-B
IRQ4-A/IRQ4-B
IRQ5-A/IRQ5-B
IRQ6-A/IRQ6-B
IRQ7-A/IRQ7-B
IRQ8-A/IRQ8-B
IRQ9-A/IRQ9-B
IRQ10-A/IRQ10-B
IRQ11-A/IRQ11-B
IRQ12
IRQ13-A/IRQ13-B
IRQ14
IRQ15-A/IRQ15-B
Input Interrupt request signals.
Table 1.9 Pin Functions (2 / 7)
Classifications Pin Name I/O Description