MC68HC908AZ60 Datasheet, PDF (39/480 Pages) Motorola, Inc – HCMOS Microcontroller Unit

FLASH-1 Memory
FLASH-1 Memory
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Future FLASH Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
FLASH-1 Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
FLASH Charge Pump Frequency Control. . . . . . . . . . . . . . . . . . . . . . 41
FLASH Erase Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
FLASH Program/Margin Read Operation . . . . . . . . . . . . . . . . . . . . . . 43
Smart Programming Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
FLASH Block Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
FLASH-1 Block Protect Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
FLASH-2 Block Protect Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
WAIT Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
STOP Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
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.
Future FLASH Memory
Design is underway to introduce an improved Flash memory module.
The new module will offer improved write erase cycling and faster
programming times. However Flash program and erase algorithms will
3-flash-1
MOTOROLA
FLASH-1 Memory
MC68HC908AZ60 — Rev 2.0
37