Eeprom – Echelon FT 3150 Smart Transceiver User Manual

Page 20

Chapter 2 - Hardware Resources

FT 3120 / FT 3150 Smart Transceiver Data Book

— Unique 48-bit Neuron ID (written at the factory).
— User-written application code and read-mostly data. See Table 2.6 for available EEPROM space.

•

2,048 bytes of static RAM that store the following:
— Stack segment, application, and system data.
— Network and application buffers.

•

The processor can access 59,392 bytes of the available 65,536 bytes of memory address space via the exter-
nal memory interface. The remaining 6,144 bytes of the memory address space are mapped internally.

•

16,384 bytes of the external memory (59,392 bytes total) are required to store the following:
— The Neuron firmware, including the system firmware executed by the MAC and Network processors, and

the executive supporting the application program.

•

The rest of the external memory (43,008 bytes) is available for:
— User-written application code.
— Additional application read/write and non-volatile data.
— Additional network buffers and application buffers.

EEPROM

Both versions of the FT Smart Transceiver have internal EEPROM containing:

•

Network configuration and addressing information.

Figure 2.5 FT 3150 Smart Transceiver
Memory Map

Figure 2.6 FT 3120 Smart Transceiver
Memory Map

2.5K Reserved Space

42K of Memory

Space Available

to the User

E7FF

4000

External

Internal

16K Neuron

Firmware and

Reserved Space

3FFF

FFFF

F200

F1FF

0.5K EEPROM

F000

EFFF

2K RAM

E800

0000

1K Reserved Space For

Memory Mapped I/O

Unavailable

FBFF

12K Neuron Firmware

(ROM)

2FFF

FFFF

FC00

EFFF

3K EEPROM