Datasheet

MC68HC908QY4•MC68HC908QT4•MC68HC908QY2•MC68HC908QT2•MC68HC908QY1•MC68HC908QT1
MOTOROLA FLASH Memory (FLASH) 45
NON-DISCLOSURE AGREEMENT REQUIRED
Data Sheet — MC68HC908QY4
Section 4. FLASH Memory (FLASH)
4.1 Contents
4.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
4.3 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
4.4 FLASH Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
4.5 FLASH Page Erase Operation . . . . . . . . . . . . . . . . . . . . . . . . .48
4.6 FLASH Mass Erase Operation . . . . . . . . . . . . . . . . . . . . . . . . .49
4.7 FLASH Program Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . .49
4.8 FLASH Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
4.9 FLASH Block Protect Register . . . . . . . . . . . . . . . . . . . . . . . . .53
4.10 Wait Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
4.11 Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
4.2 Introduction
This section describes the operation of the embedded FLASH memory.
The FLASH memory can be read, programmed, and erased from a
single external supply. The program and erase operations are enabled
through the use of an internal charge pump.
• MC68HC908QY4 and MC68HC908QT4: 4096 bytes user FLASH
from $EE00–$FDFF
• MC68HC908QY2, MC68HC908QT2, MC68HC908QY1 and
MC68HC908QT1: 1536 bytes user FLASH from $F800–$FDFF