Cpu12 Block Description - Motorola MC9S12DT256 User Manual

Section 6 HCS12 Core Block Description

6.1 CPU12 Block Description

Consult the CPU12 Reference Manual for information on the CPU.
When the CPU12 Reference Manual refers to cycles this is equivalent to Bus Clock Periods.
6.2 HCS12 Module Mapping Control (MMC) Block Description
Consult the MMC Block User Guide for information on the Module Mapping Control Block.
6.2.1 Device specific information
• INITEE
– Reset state: $01
– Bits EE11-EE15 are writeable once in Normal and Emulation Mode
• PPAGE
– Reset state : $00
– Register is writeable anytime in all modes
6.3 HCS12 Multiplexed External Bus Interface (MEBI) Block
Description
Consult the MEBI Block Guide for information on Multiplexed External Bus Interface.
6.3.1 Device specific information
• PUCR
– Reset State : $90
6.4 HCS12 Interrupt (INT) Block description
Consult the INT Block guide for information on HCS12 Interrupt block.
6.5 HCS12 Background Debug (BDM) Block Description
Consult the BDM Block guide for information on HCS12 Background Debug block
MC9S12DT256 Device User Guide — V03.07
79