Information

Chapter 13
Reset Control Module (RCM)
13.1 Introduction
This chapter describes the registers of the Reset Control Module (RCM). The RCM
implements many of the reset functions for the chip. See the chip's reset chapter for more
information.
Reset memory map and register descriptions
The reset control module (RCM) registers provide reset status information and reset filter
control.
RCM memory map
Absolute
address
(hex)
Register name
Width
(in bits)
Access Reset value
Section/
page
4007_F000 System Reset Status Register 0 (RCM_SRS0) 8 R 82h 13.2.1/253
4007_F001 System Reset Status Register 1 (RCM_SRS1) 8 R 00h 13.2.2/255
4007_F004 Reset Pin Filter Control Register (RCM_RPFC) 8 R/W 00h 13.2.3/257
4007_F005 Reset Pin Filter Width Register (RCM_RPFW) 8 R/W 00h 13.2.4/258
4007_F007 Mode Register (RCM_MR) 8 R 00h 13.2.5/259
13.2.1 System Reset Status Register 0 (RCM_SRS0)
This register includes read-only status flags to indicate the source of the most recent
reset. The reset state of these bits depends on what caused the MCU to reset.
NOTE
The reset value of this register depends on the reset source:
• POR (including LVD) — 0x82
13.2
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 253