Cfm Block Diagram - Motorola ColdFire MCF5281 User Manual

An erased Flash bit reads 1 and a programmed Flash bit reads 0. The CFM features a sense
amplifier timeout (SATO) block that automatically reduces current consumption during
reads at low system clock frequencies.
Flash Physical
Block 0
Memory Array Memory Array
Block 0H Block 0L
32K x 16 32K x 16
SATO
Note:
Mass Erase Block 0 (256 Kbytes) = Flash Physical Block 0 and Flash Physical Block 1.
Mass Erase Block 1 (256 Kbytes) = Flash Physical Block 2 and Flash Physical Block 3 (MCF5282 only)
MOTOROLA
Internal Bus
Memory Array
Block 3H
32K x 16
SATO SATO
Flash Interface
Flash Control Registers
Backdoor Access
Figure 6-1. CFM Block Diagram
Chapter 6. ColdFire Flash Module (CFM)
Flash Physical
Block 3
Memory Array
Block 3L
32K x 16
SATO
Block Diagram
BIST
Engine
V
DDF
V
SSF
6-3