MC68306
Motorola
MC68306 Integrated EC000 Processor User’s Manual
Design DocumentNxp
MC68306 Integrated EC000 Processor User’s Manual Addendum
Technical addendum for the MC68306 processor manual, providing updated DC/AC electrical specifications, timing diagrams, pin descriptions, and register address corrections.
Overview
This technical addendum provides critical corrections and supplemental information for the MC68306 Integrated EC000 Processor User’s Manual. It details updated DC electrical characteristics, including power dissipation limits and clock input voltage levels for EXTAL and X1. The document clarifies the behavior of DRAM control signals during reset and bus arbitration, specifies word-sized operation limits for DIV and MUL instructions, and provides revised AC timing diagrams for chip selection, interrupt acknowledgment, and DRAM address hold times. Additionally, it contains pin descriptions for serial module functions (IP2 and OP3) and corrects memory map addresses for system registers and peripheral assignments.
Use Cases
- Verifying electrical parameters for MC68306 system design
- Debugging bus arbitration and DRAM refresh timing logic
- Configuring serial module clock sources and parallel I/O
- Validating processor instruction set compatibility for DIV and MUL operations
- Designing power supply and pull-up resistor networks for 68300 series processors
Topics
MC68306
Motorola 68EC306
EC000
microprocessor
DRAM control
AC timing
DC electrical specifications
bus arbitration
crystal oscillator
interrupt acknowledge
Referenced Parts
68EC306
Motorola
The 68EC306 only supports word sized (.W) operations for these instructions.
| MC68306 | Motorola | MC68306 Integrated EC000 Processor User’s Manual |
| 68EC306 | Motorola | The 68EC306 only supports word sized (.W) operations for these instructions. |