Synchronous Sram-Type Transfer Mode; Figure 11.5 Connection Example Of 32-Bit External Mcu Interface; Mode); Figure 11.6 Connection Example Of 16-Bit External Mcu Interface (Synchronous Sram-Type Transfer Mode) - Renesas R-IN32M3 Series User Manual

R-IN32M3 Series: Board design edition
11.1.3

Synchronous SRAM-Type Transfer Mode

The following figure shows a general connection example in synchronous SRAM-type transfer mode, when this LSI chip
is connected as a slave device to an external MCU. When setting this mode, enable "address/data multiplex" function (the
ADMUXMODE pin should be driven high).
Figure 11.5 Connection Example of 32-Bit External MCU Interface (Synchronous SRAM-Type Transfer

Mode)

Figure 11.6 Connection Example of 16-Bit External MCU Interface (Synchronous SRAM-Type Transfer
Mode)
Notes 1. The details of signal connection depend on the bus interface specification of the host MCU.
Confirm the product specification of MCU which is connected to this LSI.
2. In this mode, the HWRZSEL pin has to be set to low level.
3. 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.
4. Connected the address signal for a 128-Kbyte boundary from the destination to the HA16
pin of this LSI.
5. Accessed is by byte-wise addressing.
R18UZ0021EJ0400
Dec. 28, 2018
R-IN32M3
HBUSCLK
HD0-HD31
HCS Z
HBCYSTZ
HRDZ
HWRS TBZ
HWRZ0 / HBENZ0
HWRZ1 / HBENZ1
HWRZ2 / HBENZ2
HWRZ3 / HBENZ3
HWAITZ
Note3
HERRO UTZ
Note2
HWRZSEL
R-IN32M3
HBUSCLK
Note4
HA16-HA19
HD0-HD15
HCS Z
HBCYSTZ
HRDZ
HWRS TBZ
HWRZ0 / HBENZ0
HWRZ1 / HBENZ1
HWAITZ
Note3
HERRO UTZ
Note2
HWRZSEL
11. External MCU/Memory Interface Pins
External MCU
BUSCLK
D0-D31
CSZ
BCYSTZ / ADV
RDZ
WRSTB Z
BENZ0
BENZ1
BENZ2
BENZ3
WAITZ
Inte rrupt, port pin
External MCU
BUSCLK
Note5
A17-A20
D0-D15
CSZ
BCYSTZ / ADV
RDZ
WRSTB Z
BENZ0
BENZ1
WAITZ
Inte rrupt, port pin
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