UPD70741GC-25-8EU Просмотр технического описания (PDF) - NEC => Renesas Technology

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UPD70741GC-25-8EU

V821™ 32-/16-BIT MICROPROCESSOR

NEC => Renesas Technology 

µPD70741

3.2.2 I/O map

Figure 3-2 shows the I/O map of the V821.

The internal 4-Gbyte memory space is divided into blocks of 1G byte each.

Each block has a linear address space of 16M bytes. (The lower 24 bits of a 32-bit address are output.)

The V821 reserves I/O addresses C0000000H-FFFFFFFFH (I/O block 3) as an internal I/O space. Each unit is

mapped to this internal I/O space.

See Section 3.4 for details of the configuration of the internal I/O space.

Figure 3-2. I/O Map

FFFFFFFFH

C0000000H

BFFFFFFFH

80000000H

7FFFFFFFH

40000000H

3FFFFFFFH

00000000H

Block 3

(Internal I/O)

Block 2

Block 1

Block 0

16

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