Memory Resources

Memory Overview

BK7258 provides 4 MB / 8 MB / 16 MB PSRAM, 640 KB SRAM, and each of CPU0, CPU1, and CPU2 owns 16 KB DTCM plus 16 KB ITCM.

For configuration methods, see RAM Resource Configuration.

SRAM Overview

BK7258 adopts an SMP architecture with AP and CP, sharing 640 KB SRAM.

Allocate SRAM between AP and CP via ram_regions.csv by adjusting the AP_RAM and CP_RAM entries.

PSRAM Overview

Refer to the PSRAM Usage Guide for detailed guidance.