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1 outline of memory access modes, Outline of memory access modes – FUJITSU F2MCTM-16LX User Manual

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CHAPTER 9 MEMORY ACCESS MODES

9.1

Outline of Memory Access Modes

In the F

2

MC-16LX, various modes are provided for access methods and access areas.

Outline of Memory Access Modes

Operation mode

Operation mode means the mode for controlling the device operation status. The operation mode is

specified by the MDx mode setting pin and the Mx bit in mode data. By selecting an operation mode,

normal operation activation or flash memory programming can be performed.

Bus mode

Bus mode means the mode for controlling the internal ROM operation and external access function. The

bus mode is specified by the MDx mode setting pin and the Mx bit in mode data. The MDx mode setting

pin specifies the bus mode for reading the reset vector and mode data, and the Mx bit in mode data

specifies the bus mode for normal operation.

Run mode

Run mode means the CPU operation mode. The run mode has the main clock mode, PLL clock mode, and

various low-power consumption mode. See CHAPTER 8 "LOW-POWER CONSUMPTION MODE" for

details.

Table 9.1-1 Mode Pin and Mode

Operation mode

Bus mode

RUN mode

Single-chip

Flash programming