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UPD77115 Datasheet(PDF) 21 Page - NEC

Part # UPD77115
Description  16-BIT FIXED-POINT DIGITAL SIGNAL PROCESSOR
PDF  56 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD77115 Datasheet(HTML) 21 Page - NEC

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Data Sheet U14867EJ5V0DS
21
µPD77115, 77115A
6. MEMORY MAP
A Harvard architecture, in which the instruction memory space and data memory space are separated is employed.
6.1 Instruction Memory
6.1.1 Instruction memory map
0xFFFF
0x0240
0x023F
0x0200
0x01FF
0x0000
System
Instruction RAM
(8K words)
Vector area (64 words)
Boot-up ROM
(512 words)
0x1000
0x0FFF
Instruction RAM
(3.5K words)
System
0x8000
0x7FFF
0xA000
0x9FFF
Caution Programs and data cannot be placed at addresses reserved for the system, nor can these
addresses be accessed. If these addresses are accessed, the normal operation of the device
cannot be guaranteed.



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