PXD20RM Datasheet, PDF (816/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

• Software programmable block program/erase restriction control for low, mid and high address
spaces.
• Erase of selected block(s).
• Read page size of 128 bits (4 words).
• ECC with single-bit correction, double-bit detection.
• Minimum program size is 2 consecutive 32 bit words, aligned on a 0-modulo-8 byte address, due
to ECC.
• Embedded hardware program and erase algorithm.
• Read While Write (RWW) with multiple partitions.
• Sleep mode for low power stand-by.
• Erase suspend, program suspend and erase-suspended program.
• Automotive flash which meets automotive endurance and reliability requirements.
• Shadow information stored in non-volatile shadow block.
21.1.4 Modes of operation
The Flash module supports the following modes of operation:
21.1.4.1 Flash User Mode
User mode is the default operating mode of the flash module. In this mode, it is possible to read and write,
program and erase the flash module.
21.1.4.2 Low Power Mode
In Low Power mode the flash memory module turns off most current sources, although logic/charge pumps
to enable quick recovery to read are enabled for faster wake up time than Power Down mode.
21.1.4.3 Power Down Mode
In Power Down mode, the flash module turns off all DC current sources and no reads from or writes to the
module and registers are possible. All power dissipation is due to leakage in this mode.
21.1.4.4 User Test Mode (UTest)
User test mode (UTest) provides a limited set of tests to end users.
21.2 External signal description
There are no external signals for the flash module but it should be noted that the VDDE_B I/O supply is
shared with the flash module. See Chapter 3, Signal Description.
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PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor