MC912DG128A Motorola, MC912DG128A Datasheet - Page 93

• Manufacturer Part Number: MC912DG128A
• Description: Microcontrollers
• Manufacturer: Motorola

1-flash
MOTOROLA
Contents
Introduction
Overview
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Flash EEPROM Control Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Flash EEPROM Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Flash EEPROM Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Programming the Flash EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Erasing the Flash EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Stop or Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
The four Flash EEPROM array modules 00FEE32K, 01FEE32K,
10FEE32K and 11FEE32K for the MC68HC912DT128A 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 module is ideal for
program storage for single-chip applications allowing for field
reprogramming.
Each 32K Flash EEPROM array is arranged in a 16-bit configuration and
may be read as either bytes, aligned words or misaligned words. Access
Flash EEPROM
MC68HC912DT128A Rev 2.0
Flash EEPROM
Flash EEPROM
93