Datasheet

ManualsBrandsNXP SEMICONDUCTORS ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller QFP 80 (14x14) 16-Bit 25 MHz I/O number 59

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Table Of Contents

List of Sections
Table of Contents
General Description
- Contents
- Introduction
- Features
- MC9S12DP256 112-Pin Block Diagram
- Ordering Information
Central Processing Unit (CPU)
- Contents
- Introduction
- Programming Model
- Data Types
- Addressing Modes
- Indexed Addressing Modes
- Opcodes and Operands
- Instruction Set Summary
Pinout and Signal Description
- Contents
- MC9S12DP256 Pin Assignments in 112-pin QFP
- Power Supply Pins
- Signal Descriptions
- Port Signals
System Configuration
- Contents
- Introduction
- Modules Variabilities
- MCU Variabilities
Registers
- Contents
- Register Block
Operating Modes
- Contents
- Introduction
- Operating Modes
- Background Debug Mode
- Security
Resource Mapping
- Contents
- Introduction
- Internal Resource Mapping
- Flash EEPROM mapping through internal Memory Expansion
- Miscellaneous System Control Register
- Memory Maps
Bus Control and Input/Output
- Contents
- Introduction
- Detecting Access Type from External Signals
- Stretched Bus Cycles
- PIPE Status Signals
- Registers
Resets and Interrupts
- Contents
- Introduction
- Register Map
- Exception Priority
- Maskable interrupts
- Latching of Interrupts
- Register Descriptions
- Resets
- Effects of Reset
- Register Stacking
Voltage Regulator (VREG)
- Contents
- Overview
- Features
- Block Diagram
- Functional Description
- External Pin Connection
- Reset Initialization
- Modes of Operation
Flash EEPROM 256K
- Contents
- Glossary
- Overview
- Features
- Block Diagram
- Module Memory Map
- Functional Description
- Register Descriptions
- External Pin Descriptions
- Reset Initialization
- Modes of Operation
- Low Power Options
- Interrupt Operation
EEPROM 4K
- Contents
- Glossary
- Overview
- Features
- Block Diagram
- Module Memory Map
- Functional Description
- Register Descriptions
- External Pin Descriptions
- Reset Initialization
- Modes of Operation
- Interrupt Operation
Port Integration Module
- Contents
- Overview
- Block Diagram
- External Pin Descriptions
- 80 Pin QFP bond-out version
- Register Map
- Register Descriptions
- Reset Initialization
- Functional Description
- Low Power Options
- Interrupt Operation
Clocks and Reset Generator (CRG)
- Contents
- Overview
- Features
- Block Diagram
- Register Map
- Functional Description
- Register Descriptions
- External Pin Descriptions
- Reset Initialization
- Interrupt Operation
- Low Power Options
Pulse Width Modulator (PWM)
- Contents
- Overview
- Features
- Block Diagram
- External Pin Descriptions
- Register Map
- Register Descriptions
- Functional Description
- Reset Initialization
- Modes of Operation
- Low Power Options
- Interrupt Operation
Enhanced Capture Timer (ECT)
- Contents
- Overview
- Features
- Modes of Operation
- Abbreviations
- Block Diagram
- Signal Descriptions
- Module Memory Map
- Register Quick Reference
- Register Descriptions
- Modes of Operation
- Interrupts
- Description of Interrupt Operation
Serial Communications Interface (SCI)
- Contents
- Overview
- Features
- Modes of Operation
- SCI Interface Diagram
- Block Diagram
- Signal Descriptions
- Module Memory Map
- Register Quick Reference
- Register Descriptions
- Functional Description
- Modes of Operation
- Interrupt Operation
Serial Peripheral Interface (SPI)
- Contents
- Overview
- Features
- Modes of Operation
- Block Diagram
- Signal Descriptions
- Module Memory Map
- Register Quick Reference
- Register Descriptions
- Functional Description
- Low Power Mode Options
- Errata
- Reset
- Interrupts
Inter-IC Bus (IIC)
- Contents
- Overview
- Features
- Modes of Operation
- Block Diagram
- Signal Descriptions
- Module Memory Map
- Register Quick Reference
- Register Descriptions
- I-Bus Protocol
- Interrupt Operation
- Modes of Operation
- Programming
MSCAN
- Contents
- Overview
- Features
- Block Diagram
- External Pin Descriptions
- Register Map
- Functional Description
- Register Descriptions
- Modes of Operation
- Low Power Options
- Interrupt Operation
Analog to Digital Converter
- Contents
- Overview
- Features
- Block Diagram
- Register Map
- Functional Description
- Register Descriptions
- External Pin Descriptions
- Reset Initialization
- Modes of Operation
- Sample Conversion
- General Purpose Input Ports
Byte Data Link Controller Module
- Contents
- Overview
- Features
- Block Diagram
- Register Map
- Functional Description
- Register Descriptions
- External Pin Descriptions
- Reset Initialization/Basic Operation
- Transmitting A Message
- Receiving A Message
- Transmitting An In-Frame Response (IFR)
- Receiving An In-Frame Response (IFR)
- Special BDLC Operations
- Modes of Operation
- Interrupt Operation
- Low Power Options
Background Debug Module (BDM)
- Contents
- Overview
- Interface Signals
- Registers
- Operation
- Modes of Operation
- Low-Power Options
- Interrupt Operation
Breakpoint (BKP) Module
- Contents
- Overview
- Features
- Block Diagram
- External Pin Descriptions
- Register Descriptions
- Functional Description
- Breakpoint Operating Modes
- Breakpoint Types
- Modes of Operation
- Low Power Options
- Reset Initialization
- Interrupt Operation
- General Purpose I/O Ports
Revision History
- Changes from Rev 1.0 to Rev 1.1
Glossary
Literature Updates
- Literature Distribution Centers
- Customer Focus Center
- Microcontroller Division’s Web Site

Clocks and Reset Generator (CRG)

MC9S12DP256 — Revision 1.1

Clocks and Reset Generator (CRG)

Table 46 Outcome of oscillation absence conditions

Condition

Startup

counter clock

Outcome

POR Self clock

Part resets. Startup counter starts in self clock mode. Part

switches to OSCCLK when crystal monitor indicates no

failure and at the end of the startup counter.

CME=0; PLLSEL=0; SCME=x

Crystal failure

None Part goes static

CME=0; PLLSEL=1; SCME=x

Crystal failure

None

Part drifts to self clock frequency but mode is not

asserted.

CME=1; PLLSEL=x; SCME=0

Crystal failure

OSCCLK

Part resets. Clocks are not used until the end of the

Startup counter, and then part comes out of reset.

CME=1; PLLSEL=x; SCME=1

Crystal failure

Self clock Part goes into self clock mode.

CME=x; PLLSEL=0; SCME=0

STOP exit w/ async interrupt

OSCCLK Clocks are not used until the end of the Startup counter.

CME=x; PLLSEL=1; SCME=0

STOP exit w/ async interrupt

PLLCLK Clocks are not used until the end of the Startup counter.

CME=x; PLLSEL=x; SCME=1

STOP exit w/ async interrupt

Self clock

Part wakes up in self clock mode. Part returns to previous

if crystal monitor indicates no failure at the end of the

Startup counter.

CME=x; PLLSEL=x; SCME=0

RESET during STOP before

monitor timeout

OSCCLK

Part resets. Clocks are not used until the end of the

Startup counter.

CME=x; PLLSEL=x; SCME=1

RESET during STOP before

monitor timeout

Self clock

Part resets. Clocks are not used until the end of the

Startup counter.

CME=0; PLLSEL=x; SCME=0

RESET during STOP after

monitor timeout

OSCCLK

Part resets. Clocks are not used until the end of the

Startup counter.

CME=1; PLLSEL=x; SCME=0

RESET during STOP after

monitor timeout

OSCCLK

Monitor reset occurs. Clocks are not used until the end of

the Startup counter.

CME=x; PLLSEL=x; SCME=1

RESET during STOP after

monitor timeout

Self clock

Part resets. Clocks are not used until the end of the

Startup counter.

Freescale Semiconductor, I

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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