R-IN32M3 Datasheet, PDF (19/116 Pages) Renesas Technology Corp – LSI for Industrial Ethernet

R-IN32M3 Series Data Sheet
2. Pin Information
2.3.3
External Memory Interface Pins
Pin Name
BUSCLK
CSZ0
CSZ1
CSZ2
CSZ3
A1 / MA0 ^Note4
A2-A20 /
MA1-MA19 ^Note4
A21-A27 /
MA20-MA26 ^Note4
D0-D15 /
MD0-MD15 /
MA0-MA15 ^{Note1, Note4}
D16-D31 /
MD16-MD31 /
MA16-MA31^{Note1, Note4}
RDZ
WRSTBZ
WRZ0, WRZ1/
BENZ0, BENZ1
WRZ2, WRZ3/
BENZ2, BENZ3
WAITZ
WAITZ1-WAITZ3 ^Note2
BCYSTZ / ADVZ ^Note3
I/O
Function
Shared Signal
O
Bus clock output
-
O
Chip select signal output HCSZ
O
HPGCSZ
O
-
O
-
O
Address output
HA1
O
HA2-HA20
Shared
Port
-
-
P44
P51
P50
P40
-
Active
-
Low
Level
during Reset
Clock output
Hi-Z (High)
-
Hi-Z (High)
Hi-Z (Low)
O
I/O
Data bus
-
HD0-HD15
RP21-
RP27
-
I/O
O
Read strobe output
O
Write strobe output
O
Valid byte lane strobe
output
O
I
Wait signal input
I
Wait signal input
O
Address valid output
HD16-HD31
RP30-
-
RP37
RP10-
RP17
HRDZ
-
Low
HWRSTBZ
-
Low
HWRZ0, HWRZ1/ -
Low
HBENZ0, HBENZ1
HWRZ2, HWRZ3/ RP06， Low
HBENZ2, HBENZ3 RP07
HWAITZ
P41
Low
-
P45-P47 Low
HBCYSTZ
RP20
Low
Hi-Z (High)
Hi-Z (High)
Hi-Z (High)
Hi-Z (High)
Remark: Pins of the external memory interface other than BUSCLK are input pins while the internal
reset signal (HRESETZ) is at its active level.
Notes 1. While the synchronous burst access memory controller is in use, these signals are
multiplexed with the address signals if the ADMUXMODE pin is driven high.
ADMUXMODE = 0: MD0-MD31 (Separate address and data lines)
ADMUXMODE = 1: MD0-MD31/MA0-MA31 (Multiplexed address and data lines)
2. These pins are only available when the synchronous burst access memory controller is in
use.
3. This pin functions as BCYSTZ when the asynchronous SRAM memory controller is in use
and as ADVZ when the synchronous burst access memory controller is in use.
4. This pin functions as A1-A27 and D0-D31 functions when the asynchronous SRAM memory
controller is in use and as MA0-MA26 and MD0-MD31 functions when the synchronous burst
access memory controller is in use.
R18DS0008EJ0401
Feb 28, 2017
Page 19 of 110