PXS20RM Datasheet, PDF (38/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

• Chapter 43, Semaphore Unit (SEMA4), describes the module that lets each processor know which
processor has control of common memory.
• Chapter 44, Sine Wave Generator (SWG), describes the sine wave generator module.
• Chapter 45, Software Watchdog Timer (SWT), describes a hardware-based timer that can be
implemented to prevent software runaway.
• Chapter 46, Static RAM (SRAM), describes the on-chip static RAM (SRAM) implementation,
covers general operations, configuration, and initialization. It also provides information and
examples of how to minimize power consumption when using the SRAM.
• Chapter 47, System Integration Unit Lite (SIUL), describes the SIU module, which controls MCU
reset configuration, pad configuration, external interrupt, general-purpose I/O (GPIO), internal
peripheral multiplexing, and the system reset operation.
• Chapter 48, System Status and Configuration Module (SSCM),
• Chapter 49, System Timer Module (STM), describes the timer control module.
• Chapter 50, Temperature Sensor (TSENS), describes the on-board sensor that monitors device
temperature.
• Chapter 51, Wakeup Unit (WKPU), describes the module that supports an external source that can
cause non-maskable interrupt requests or wakeup events.
• Appendix A, Revision History, describes the revision history of this document.
Information about different device versions (“cuts”)
The PXS20 device is available in three silicon versions, or “cuts”. These are referred to as “cut1,” “cut2,”
and “cut3” throughout this document. Functional differences between the two cuts are clearly identified
with the labels “cut1,” “cut2,” and “cut3.” All cut2 functionalities are applicable for cut3 except for the
following :
• BAM code (cut2 uses ROM and Shadow Flash, cut3 ROM only)
• Chip ID's (MINOR_MASK_ID, JTAG_ID)
• POR and LVD flag behavior
Acronyms and abbreviations
The following table lists some acronyms and abbreviations used in this document.
Term
AUTOSAR
GPIO
IEEE
JEDEC
JTAG
Mux
Meaning
Automotive Open System Architecture
General-purpose I/O
Institute for Electrical and Electronics Engineers
Joint Electron Device Engineering Council
Joint Test Action Group
Multiplex
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PXS20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor