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R-IN32M4-CL3 User's Manual: Board design edition
9.1.3.2
Address/Data Separated Mode (ADMUXMODE = L)
R-IN32M4-CL3
Figure 9.7 Connection Example of 32-Bit External MCU Interface
R-IN32M4-CL3
Figure 9.8 Connection Example of 16-Bit External MCU Interface
Notes 1. In this mode, drive the HWRZSEL pin low.
2. Connecting the HERROUTZ signal is not indispensable.
Connect it to an interrupt or general-purpose port input of the MCU to be connected, if required.
3. 32-bit width: Connected the address signal for a 32-bit boundary from the destination to the HA1 pin.
16-bit width: Connected the address signal for a 16-bit boundary from the destination to the HA1 pin.
4. Accessed is by byte-wise addressing.
R18UZ0074EJ0100
Dec 24, 2019
HBUSCLK
Note3
HA1-HA19
HD0-HD31
HCSZ
HPGCSZ
HBCYSTZ
HRDZ
HWRSTBZ
HWRZ0 / HBENZ0
HWRZ1 / HBENZ1
HWRZ2 / HBENZ2
HWRZ3 / HBENZ3
HWAITZ
Note2
HERROUTZ
ADMUXMODE
Note1
HWRZSEL
HBUSCLK
Note3
HA1-HA20
HD0-HD15
HCSZ
HPGCSZ
HBCYSTZ
HRDZ
HWRSTBZ
HWRZ0 / HBENZ0
HWRZ1 / HBENZ1
HWAITZ
Note2
HERROUTZ
ADMUXMODE
Note1
HWRZSEL
9. External MCU/Memory Interface Pins
External MCU
BUSCLK
Note4
A2-A20
D0-D31
CSZ
PGCSZ
BCYSTZ / ADV
RDZ
WRSTBZ
BENZ0
BENZ1
BENZ2
BENZ3
WAITZ
Interrupt, port pin
External MCU
BUSCLK
Note4
A1-A20
D0-D15
CSZ
PGCSZ
BCYSTZ / ADV
RDZ
WRSTBZ
BENZ0
BENZ1
WAITZ
Interrupt, port pin
Page 38 of 61
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