MC68HC908AZ32ACFU MOTOROLA [Motorola, Inc], MC68HC908AZ32ACFU Datasheet - Page 64
MC68HC908AZ32ACFU
Manufacturer Part Number
MC68HC908AZ32ACFU
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908AZ32ACFU.pdf
(468 pages)
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FLASH Memory
4.3 Functional Description
4.4 FLASH Control and Block Protect Registers
Advance Information
64
NOTE:
The FLASH memory is an array of 32,256 bytes with one byte of block
protection and an additional 52 bytes of user vectors. An erased bit
reads as a logic 1 and a programmed bit reads as a logic 0.
Memory in the FLASH array is organized into rows within pages. There
are two rows of memory per page with 64 bytes per row. The minimum
erase block size is a single page,128 bytes. Programming is performed
on a per-row basis, 64 bytes at a time. Program and erase operations
are facilitated through control bits in the FLASH Control Register
(FLCR). Details for these operations appear later in this section.
The FLASH memory map consists of:
Programming tools are available from Motorola. Contact your local
Motorola representative for more information.
A security feature prevents viewing of the FLASH contents.
The FLASH array has two registers that control its operation, the FLASH
Control Register (FLCR) and the FLASH Block Protect Register
(FLBPR).
1. No security feature is absolutely secure. However, Motorola’s strategy is to make reading or
copying the FLASH difficult for unauthorized users.
Freescale Semiconductor, Inc.
•
•
•
•
For More Information On This Product,
$8000–$FDFF: User Memory (32,256 bytes)
$FF80: FLASH Block Protect Register (FLBPR)
$FF88: FLASH Control Register (FLCR)
$FFCC–$FFFF: these locations are reserved for user-defined
interrupt and reset vectors (Please see
Priority
Go to: www.freescale.com
on page 59 for details)
FLASH Memory
Vector Addresses and
68HC908AZ32A — Rev 0.0
(1)
MOTOROLA
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