Fujitsu MB91260B Series Hardware Manual page 420

■ Writing by a ROM Writer
This flash memory can be written from a device external by using a ROM writer. In this case, a pin feature
of the single flash memory product equivalent to MBM29LV400TC is assigned to the device external pin
and the FR-CPU stops its operation. The address line connections are changed from those of the CPU
mode, and the mapping of the memory area is changed. For details, refer to "Supporting ROM Writer
Specifications".
■ Block Diagram of Flash Memory
CPU
CPU core
Figure 17.1-1 Block Diagram of Flash Memory
Flash interface
Control
signal
Address
Data
CHAPTER 17 FLASH MEMORY
Control
signal
A0 to A17
DQ0 to DQ15
Flash memory
Control
signal
A0 to A17
DQ0 to DQ15
Control
signal
Interface
with Flash
writer
Address
(in Flash
mode)
Data
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