RX62N Group, RX621 Group
1. Overview
Table 1.9
Pin Functions (2 / 7)
Classifications
Pin Name
I/O
Description
Bus control
RD#
Output
Strobe signal which indicates that reading from the external bus
interface space is in progress.
WR#
Output
Output
Strobe signal which indicates that writing to the external bus
interface space is in progress, in 1-write strobe mode.
WR0# to WR3#
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
Output
Output
Output
Output
Output
Output pin for SDRAM write enable signals.
Output pin for SDRAM column address strobe signals.
Output pin for SDRAM row address strobe signals.
Output pin for SDRAM clock enable signals.
Output pins for SDRAM I/O data mask enable signals.
Output pin for SDRAM chip select signals.
Select signals for areas 0 to 7.
CAS#
RAS#
CKE
DQM0 to DQM34
SDCS#
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
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 requests of channel 0.
EDREQ1-A/EDREQ1-B/
EDREQ1-C
Input
Input pins for external requests of channel 1.
EDACK0-A/EDACK0-B/
EDACK0-C
Output
Output
Output pins for single address transfer acknowledge signals of
channel 0.
EDACK1-A/EDACK1-B/
EDACK1-C
Output pins for single address transfer acknowledge signals of
channel 1.
Interrupt
NMI
Input
Input
Non-maskable interrupt request signal.
Interrupt request signals.
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
R01DS0052EJ0110 Rev.1.10
Feb 10, 2011
Page 41 of 146
RENESAS [ RENESAS TECHNOLOGY CORP ]
