MMC2114 MOTOROLA [Motorola, Inc], MMC2114 Datasheet - Page 207

• Manufacturer Part Number: MMC2114
• Description: M CORE Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

10.6 Block Diagram
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
MOTOROLA
The SGFM module shown in
blocks, the M•CORE local bus (MLB) and IP bus interfaces, FLASH
interface, register blocks, and the BIST engine.
Each 64-Kbyte FLASH physical block is arranged as 32,768 halfwords
(16 bits) and may be read as either bytes or aligned halfwords. Aligned
word access is provided by concatenating the outputs of two FLASH
physical blocks. Reads of bytes, aligned halfwords, and aligned words
require one clock cycle. Misaligned read accesses are not supported
and will result in a cycle termination transfer error.
All FLASH program, erase, and verify commands operate on adjacent
FLASH physical blocks and are initiated with a single aligned 32-bit write
to the appropriate array location. Any other write operation will cause a
cycle termination transfer error. For erase purposes, a FLASH physical
block is organized as 1024 rows of 64 bytes with a single erase page
consisting of 8 rows (512 bytes). Page erase operates simultaneously on
two interleaving erase pages in adjacent FLASH physical blocks, making
the minimum effective erase size 1 Kbyte. Mass erase operates
simultaneously on two adjacent FLASH physical blocks in their entirety
and erases a total of 128 Kbytes of array space.
Each pair of FLASH physical blocks requires a banked set of registers to
control program and erase operations.
module configured with four sets of banked registers. A 128 K-byte
module would only require one set, a 256-Kbyte module would require
two sets and a 384-Kbyte module would require three sets of banked
registers.
An erased FLASH bit reads 1 and a programmed FLASH bit reads 0.
The SGFM features a sense amplifier timeout block that automatically
reduces current consumption during reads at low clock frequencies.
Freescale Semiconductor, Inc.
Second Generation FLASH for M•CORE (SGFM)
For More Information On This Product,
Go to: www.freescale.com
Figure 10-1
Second Generation FLASH for M•CORE (SGFM)
Figure 10-1
contains the FLASH physical
shows a 512-Kbyte
Advance Information
Block Diagram
207