SIM3U1X4 PDF File ( Datasheet )

SiM3U1xx High-Performance, Low-Power, 32-Bit Precision32™ USB MCU Family with up to 256 kB of Flash 32-bit ARM® Cortex™-M3 CPU - 80 MH- maximum frequency - Single-cycle multiplication, hardware division support - Nested vectored interrupt control (NVIC) with 16 levels of interrupt priority Memory - 32 256 kB Flash, in-system programmable - 8 32 kB SRAM (including 4 kB retention SRAM) - External bus interface supports up to 16 MB of external memory and a parallel LCD interface with QVGA