External Mcu/Memory Interface Pins; Table 11.1 Mode Selection Of External Mcu/Memory Connection - Renesas R-IN32M3 Series User Manual

R-IN32M3 Series: Board design edition
11.

External MCU/Memory Interface Pins

This LSI is able to connect to an external MCU or memory.
The connection mode is decided by the signal level of the MEMIFSEL, MEMCSEL, HIFSYNC, and ADMUXMODE
pins as shown in Table 11.1.

Table 11.1 Mode Selection of External MCU/Memory Connection

MEMIFSEL MEMCSEL
Low
High
Note. Before access to the CC-Link IE field, select the synchronous SRAM interface mode
(MEMIFSEL high, MEMCSEL low, HIFSYNC high). (The CC-Link IE field is incorporated only in
the R-IN32M3-CL.)
The connection example for each modes is shown in the following sections.
R18UZ0021EJ0400
Dec. 28, 2018
Mode Setting
HIFSYNC
Low -
High -
Low Low
High
High Low
High
11. External MCU/Memory Interface Pins
ADMUXMODE
- External memory interface
Asynchronous SRAM MEMC
- External memory interface
Synchronous burst access MEMC
- External MCU interface
Asynchronous SRAM interface mode
- External MCU interface
Synchronous SRAM interface mode
- Setting prohibited
Low Setting prohibited
High External MCU interface
Synchronous SRAM-type transfer mode
(address/data multiplexed)
External Connection Mode
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