Energy Meter IC Family Software Instruction Manual

71M652X Software User’s Guide

Revision 1.7 TERIDIAN Proprietary 19 of 138

3 DESIGN REFERENCE

As depicted in Figure 1 of section 2, the 71M652X provides a great deal of design flexibility for the application de-

veloper. Programming details are described below.

3.1 PROGRAM MEMORY

The embedded 80515 MPU within the 71M652X has separate program (32K, 16K, or 8K bytes) and data memory (2K

bytes). The code for the Compute Engine program resides in the MPU program memory (flash).

The Flash program memory is addressed as a 64KB block, segmented in 512-byte pages. Selection of these individual

blocks is accomplished using the function calls related to flash memory, which are described in more detail below.

3.2 DATA MEMORY

The 71M652X has 2K bytes of Data Memory for exclusive use of the embedded 80C515 MPU. In addition, there are

512 bytes for the Compute Engine. See Table 3-1: for a summary.

Address

(hex)

Memory

Technology

Memory Type Typical Usage

Wait States

(at 5MHz)

Memory Size

(bytes)

0000-7FFF

0000-4FFF

0000-2FFF

Flash Memory Non-volatile

Program and non-volatile

data

32KB

16KB

8KB

0000-07FF

Static RAM Volatile MPU data XRAM, 0 2KB

1000-11FF

Static RAM Volatile CE data 6 512

2000-20FF

Static RAM Volatile

Miscellaneous I/O RAM

(configuration RAM)

0 256

Table 3-1: Memory Map