MC9S12HY64 Datasheet, PDF (513/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Chapter 15
32 KByte Flash Module (S12FTMRC32K1V1)
Revision
Number
V01.11
V01.12
V01.13
Table 15-1. Revision History
Revision
Date
28 Jul 2008
19 Dec 2008
25 Sep 2009
Sections
Affected
Description of Changes
15.1.1/15-514 - Remove reference to IFRON in Program IFR definition
15.3.1/15-517 - Remove reference to IFRON in Table 15-4 and Figure 15-3
15.1/15-513 - Clarify single bit fault correction for P-Flash phrase
15.4.5.4/15-548 - Add statement concerning code runaway when executing Read Once,
15.4.5.6/15-549 Program Once, and Verify Backdoor Access Key commands from Flash block
15.4.5.11/15-55 containing associated fields
3
- Relate Key 0 to associated Backdoor Comparison Key address
15.4.5.11/15-55 - Change “power down reset” to “reset”
3
- Reformat section on unsecuring MCU using BDM
15.4.5.11/15-55
3
15.5.2/15-561
The following changes were made to clarify module behavior related to Flash
register access during reset sequence and while Flash commands are active:
15.3.2/15-520 - Add caution concerning register writes while command is active
15.3.2.1/15-522 - Writes to FCLKDIV are allowed during reset sequence while CCIF is clear
15.4.3.2/15-540 - Add caution concerning register writes while command is active
15.6/15-562 - Writes to FCCOBIX, FCCOBHI, FCCOBLO registers are ignored during
reset sequence
15.1 Introduction
The FTMRC32K1 module implements the following:
• 32 Kbytes of P-Flash (Program Flash) memory
• 4 Kbytes of D-Flash (Data Flash) memory
The Flash memory is ideal for single-supply applications allowing for field reprogramming without
requiring external high voltage sources for program or erase operations. The Flash module includes a
memory controller that executes commands to modify Flash memory contents. The user interface to the
memory controller consists of the indexed Flash Common Command Object (FCCOB) register which is
written to with the command, global address, data, and any required command parameters. The memory
controller must complete the execution of a command before the FCCOB register can be written to with a
new command.
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
513