Renesas R-IN32M3 Series User Manual page 38

R-IN32M3-EC User's Manual
2.1.18 Operating Mode Setting Pins
Pin Name I/O
BOOT1-BOOT0 I
MEMIFSEL I
BUS32EN I
HIFSYNC I
HWRZSEL I
MEMCSEL I
ADMUXMODE I
R18UZ0003EJ0501
Jan. 12, 2021
Function
Boot mode select
00: External memory boot
01: External serial flash ROM boot
10: External MPU boot
11: Instruction RAM boot (only available for debugging)
External memory interface select
0: Slave memory interface
1: External MCU interface
External memory interface bus width select
0: 16-bit bus
1: 32-bit bus
External MCU interface operating mode
0: Asynchronous SRAM interface
1: Synchronous SRAM interface
External MCU interface HWRZ/HBENZ select
0: Used as HBENZ
1: Used as HWRZ
Internal memory controller select
0: Asynchronous SRAM MEMC
1: Synchronous burst access MEMC
Multiplexing of address and data lines
0: Separate address and data lines
1: Multiplexed address and data lines
2. Pin Functions
Level during & after
Active Reset
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