UPD70F3114 datasheet(86/692 Pages) NEC

Part #	UPD70F3114

Description	32-Bit Single-Chip Microcontrollers

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Manufacturer	NEC [NEC]

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CHAPTER 4 BUS CONTROL FUNCTION

86

User’s Manual U15195EJ5V0UD

4.5

Bus Access

4.5.1

Number of access clocks

The number of basic clocks required to access each resource is shown below.

Bus Cycle Status

Resource (Bus Width)

Instruction Fetch

Operand Data Access

Internal ROM (32 bits)

1

Note 1

5

Internal RAM (32 bits)

1

Note 2

1

On-chip peripheral I/O (16 bits)

−

5

Note 3

External memory (16 bits)

3

Note 3

3

Note 3

Notes 1.

This value is 2 in the case of instruction branch.

2.

This value is 2 if there is conflict with data access.

3.

MIN. value

Remark

Unit: Clock/access

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