Hcs12 cpu reference manual

Text: -bit HCS12 CPU Core > 25 MHz bus operation at 5V for 40 ns minimum instruction cycle time > Opcode , EEPROM > Flexible protection scheme for protection against accidental program or erase HCS12 CPU , reference crystals HCS12 10-bit 8-channel Analog to Digital Block Guide S12BDMV4 HCS12 Background Debug (BDM) Block Guide > Reduces From the HCS12 CPU manual: O —Optional program word fetch (P) if instruction is misaligned and has an odd number of bytes of object code — otherwise, appears as a free cycle (f); Page 2 prebyte treated as a separate 1-byte instruction. P —Program word fetch (always an aligned-word read) HC12 series, another covers both the HC12 and HCS12, and the third (newest) only mentions the HCS12. The CPU Reference pretty much stays clear of any mentions of the hardware on the chips. Some profs in their syllabi on the web incorrectly refer to the CPU Reference as the "Core Users Guide," instead of its being a part of it. HCS12. 16-Bit HCS12. NXP USA Inc. Freescale S12 and S12X MCUs provide high-performance 16-bit control for automotive and industrial applications. The S12X MCUs feature the innovative XGATE module, designed specifically to handle interrupt events without CPU intervention. Text: -bit HCS12 CPU Core > 25 MHz bus operation at 5V for 40 ns minimum instruction cycle time > Opcode , Integrated EEPROM HCS12 CPU > Flexible protection scheme for protection against accidental program or , Guide S12CPUV2 HCS12 CPU Reference Manual S12CRGV3 HCS12 Clock Reset Generator Block Guide , like position sensors, analog meters and 1.1 Introduction This manual describes the features and operation of the core (central processing unit, or CPU, and development support functions) used in all HCS12 microcontrollers. For reference, information is provided for the M68HC12. 1.2 Features The CPU12 is a high-speed, 16-bit processing unit that has a programming model identical to S12CPUV2 HCS12 CPU Reference Manual S12MSCANV2