Freescale Semiconductor, Inc.
Advance Information — 68HC(9)12D60
Section 22. Appendix: 68HC912D60A Flash EEPROM
22.1 Contents
22.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .399
22.3 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .400
22.4 Flash EEPROM Control Block . . . . . . . . . . . . . . . . . . . . . . . .400
22.5 Flash EEPROM Arrays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .400
22.6 Flash EEPROM Registers . . . . . . . . . . . . . . . . . . . . . . . . . . .401
22.7 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .403
22.8 Programming the Flash EEPROM . . . . . . . . . . . . . . . . . . . . .404
22.9 Erasing the Flash EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . .405
22.10 Stop or Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .405
22.2 Introduction
The two Flash EEPROM modules (32-Kbyte and 28-Kbyte) for the
68HC912D60A serve as electrically erasable and programmable, non-
volatile ROM emulation memory. The modules can be used for program
code that must either execute at high speed or is frequently executed,
such as operating system kernels and standard subroutines, or they can
be used for static data which is read frequently. The Flash EEPROM is
ideal for program storage for single-chip applications allowing for field
reprogramming.
68HC(9)12D60 — Rev 4.0
MOTOROLA
Advance Information
Appendix: 68HC912D60A Flash EEPROM
399
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MOTOROLA [ MOTOROLA ]
