Freescale Semiconductor, Inc.
Technical Data — MC68HC908AS60
Section 4. FLASH-1 Memory
4.1 Contents
4.2
4.3
4.4
4.5
4.6
4.7
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
FLASH-1 Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
FLASH Charge Pump Frequency Control . . . . . . . . . . . . . . . .67
FLASH Erase Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
FLASH Program/Margin Read Operation. . . . . . . . . . . . . . . . .68
4.8
4.8.1
4.8.2
FLASH Block Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
FLASH-1 Block Protect Register . . . . . . . . . . . . . . . . . . . . .72
FLASH-2 Block Protect Register . . . . . . . . . . . . . . . . . . . . .73
4.9
4.9.1
4.9.2
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
4.2 Introduction
This section describes the operation of the embedded FLASH-1
memory. This 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.
MC68HC908AS60 — Rev. 1.0
Technical Data
FLASH-1 Memory
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