mc68hc08qa24 Freescale Semiconductor, Inc, mc68hc08qa24 Datasheet - Page 99

• Manufacturer Part Number: mc68hc08qa24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

8.1 Contents
8.2 Introduction
MC68HC08QA24
Freescale Semiconductor
Technical Data — MC68HC08QA24
Section 8. Error Detection Central Processor Unit (EDC)
8.2
8.3
8.4
8.5
8.6
This section describes the error detection central processor unit (EDC,
version 0) which is based on the CPU08, version A. The M68HC08 CPU
is an enhanced and fully object-code-compatible version of the
M68HC05 CPU. The error detection CPU is a duplicate CPU which runs
synchronously with the primary CPU. The EDC operates on all data in
parallel with the primary CPU, executing all of the same instruction flows.
In addition to the duplicate CPU, the EDC contains circuits for comparing
address and data with the primary CPU. If either the address or data
values do not match, an internal reset is asserted.
Error Detection Central Processor Unit (EDC)
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
FLT Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
EDC Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Technical Data
97