StartingwiththeHCS.pptVIP

Starting with the HCS12 Operating Modes Modes of Operation MODC, MODB, MODA Write Capability Memory Map Resource Mapping EEPROM Resource Mapping Mapping Precedence External Bus Interface Read/Write Bus Cycle Memory Interface Example Byte Select Logic External Resource Mapping External RAM at MC9S12DP256 GP I/O PORTS PORTE Registers PORTE Assignments HCS12 Device Identification HCS12 Memory Identification Configuration Example HCS12 Technical Training Module 4 – System Configuration, Slide * MOTOROLA and the Stylized M Logo are registered in the US Patent Trademark Office. All other product or service names are the property of their respective owners. ? Motorola, Inc. 2001. Starting with the HCS12 Technical Overview HCS12 configuration Version # : 1.0 Date: 12-March-2002 MOTOROLA and the Stylized M Logo are registered in the US Patent Trademark Office. All other product or service names are the property of their respective owners. ? Motorola, Inc. 2001. Place your image on top of this gray box. If no graphic is applicable, delete gray box and notch-out behind gray box, fromthe Title Master 1) HCS12 Technical Overview 2) Operating Modes 3) Resource Mapping 4) External Bus Interface 5) Port Integration Module 6) Background Debug Mode MODA MODB MODC/BKGD RESET HCS12 Mode Register Special Single Chip Emulation Exp Narrow Special Test Emulation Exp Wide Normal Single Chip Normal Exp Narrow Peripheral Normal Exp Wide $_0B Mode Pins are sampled and latched on rising edge of Reset . CLOCK /RESET MODA MODB MODC Sample Latch MODC MODB MODA MODE ADDR DATA BDM Special Expanded Narrow Allowed 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 8 16 16 16 16 16 16 16 16 8 Allowed Allowed Allowed Allowed Allowed Active Special Single Chip Special Test Emulation Expanded Wide Normal Single Chip Expanded Narrow Peripheral Mode Expanded Wide MODA and MODB have active pulldowns during reset. MODC has the pull-up on the