AN2156 Freescale Semiconductor / Motorola, AN2156 Datasheet - Page 39
![no-image](/images/no-image-200.jpg)
AN2156
Manufacturer Part Number
AN2156
Description
Programming and Erasing FLASH and EEPROM Memories on the MC68HC908AS60A/AZ60A
Manufacturer
Freescale Semiconductor / Motorola
Datasheet
1.AN2156.pdf
(84 pages)
- Current page: 39 of 84
- Download datasheet (509Kb)
FLASH Frequently Asked Questions
Question 1
Answer 1
AN2156
MOTOROLA
These questions and answers are designed to help the user with
frequent concerns.
I cannot program/erase FLASH memory at all. What should I consider to
make my program/erase code work?
Check the following:
•
•
•
•
Freescale Semiconductor, Inc.
For More Information On This Product,
Is each step of the programming algorithm (or erasing algorithm)
performed in the right order?
The sequence of the program and erase operations is interlocked
in hardware so only the prescribed order of these operations will
allow erase/program operations. However, other non-FLASH
operations may occur between the steps shown.
Is the memory block where you want to program/erase
unprotected?
The block protect feature of the FLASH is present to prevent
unintentional programming or erasing. The block protect bits must
be cleared such that the memory to be erased or programmed is
unprotected. The only way to override the block protection is to
apply voltage V
algorithms. (Refer to
the specification?
Timing is critical to ensure proper FLASH operation. Delay times
that are too long or too short can alter the FLASH performance to
the point where it does not work or is not reliable. Motorola does
not guarantee FLASH performance if all timing requirements are
not being adhered to.
Is the correct FLASH register being written to enable erase or
program?
The MC68HC908AS60A/AZ60A has two FLASH arrays with two
separate sets of control and block protect registers. Make sure the
appropriate register is being addressed. Refer to
Protection.
Are delay times such as t
Go to: www.freescale.com
HI
on IRQ during the erase and program
FLASH Erase
PROG
, t
ERASE
FLASH Frequently Asked Questions
Operations.)
, t
MERASE
, t
FLASH Block
NVS
Application Note
, etc., within
39
Related parts for AN2156
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![AN177](/images/no-image3.png)
Part Number:
Description:
An Overview og the Phase Locked Loop
Manufacturer:
Philips
Datasheet:
![AN1268](/images/manufacturer_photos/0/6/637/stmicroelectronics_tmb.jpg)
Part Number:
Description:
AN OVERVIEW OF THE LPC FLASH INTERFACE
Manufacturer:
STMicroelectronics
![AN1315](/images/no-image3.png)
Part Number:
Description:
An Evaluation System Interfacing the MPX2000 Series Pressure Sensors to a Microprocessor
Manufacturer:
Motorola / Freescale Semiconductor
![AN1998](/images/no-image3.png)
Part Number:
Description:
An FM-IF system for DECT and other high speed GFSK applications
Manufacturer:
Philips Semiconductors / NXP Semiconductors
![AN2124](/images/no-image3.png)
Part Number:
Description:
An 8 x 8 Discrete Cosine Transform on the StarCore SC140/SC1400 Cores
Manufacturer:
Freescale Semiconductor / Motorola
![AN2428](/images/no-image3.png)
Part Number:
Description:
An Overview of the HCS12 ATD Module
Manufacturer:
Freescale Semiconductor / Motorola
![AN2708](/images/no-image3.png)
Part Number:
Description:
An Introduction to the External Bus Interface on the HCS12X
Manufacturer:
Freescale Semiconductor / Motorola
![AN2783](/images/no-image3.png)
Part Number:
Description:
An RF Data Link Using Tango3 and Romeo2 RF Modules
Manufacturer:
Freescale Semiconductor / Motorola
![MC33394DH](/images/manufacturer_photos/0/2/262/freescale_semiconductor_tmb.jpg)
Part Number:
Description:
IC POWER SUPPLY MULT-OUT 44-HSOP
Manufacturer:
Freescale Semiconductor
Datasheet:
![MC33394DWB](/images/manufacturer_photos/0/2/262/freescale_semiconductor_tmb.jpg)
Part Number:
Description:
IC POWER SUPPLY MULT-OUT 54-SOIC
Manufacturer:
Freescale Semiconductor
Datasheet:
![MSC7110](/images/no-image3.png)
Part Number:
Description:
Low-Cost 16-Bit DSP with DDR Controller
Manufacturer:
Freescale Semiconductor / Motorola
![MSC7116](/images/no-image3.png)
Part Number:
Description:
Low-Cost 16-bit DSP with DDR Controller and 10/100 Mbps Ethernet MAC
Manufacturer:
Freescale Semiconductor / Motorola
Datasheet:
![MSC7119](/images/no-image3.png)
Part Number:
Description:
Low-Cost 16-bit DSP with DDR Controller and 10/100 Mbps Ethernet MAC
Manufacturer:
Freescale Semiconductor / Motorola
Datasheet:
![MSC7118](/images/no-image3.png)
Part Number:
Description:
Low-Cost 16-bit DSP with DDR Controller
Manufacturer:
Freescale Semiconductor / Motorola
Datasheet:
![MSC8101](/images/no-image3.png)
Part Number:
Description:
Functional Pin Difference Between the MSC8101 and MPC8260 Communications Processor Modules
Manufacturer:
Freescale Semiconductor / Motorola