EM773 datasheet(8/45 Pages) NXP

8 / 45 page

EM773

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Objective data sheet

Rev. 1 — 1 September 2010

8 of 45

NXP Semiconductors

EM773

Energy metering IC

Functional description

7.1 ARM Cortex-M0 processor

The ARM Cortex-M0 is a general purpose, 32-bit microprocessor, which offers high

performance and very low power consumption.

7.2 On-chip flash program memory

The EM773 contains 32 kB of on-chip flash memory.

7.3 On-chip SRAM

The EM773 contains a total of 8 kB on-chip static RAM memory.

7.4 Memory map

The EM773 incorporates several distinct memory regions, shown in the following figures.

Figure 3 shows the overall map of the entire address space from the user program

viewpoint following reset. The interrupt vector area supports address remapping.

The AHB peripheral area is 2 megabyte in size, and is divided to allow for up to 128

peripherals. The APB peripheral area is 512 kB in size and is divided to allow for up to 32

peripherals. Each peripheral of either type is allocated 16 kilobytes of space. This allows

simplifying the address decoding for each peripheral.

EM773 Datasheet(PDF) 8 Page - NXP Semiconductors