UPD77019-013 NEC, UPD77019-013 Datasheet - Page 21

• Manufacturer Part Number: UPD77019-013
• Description: 16 bits/ Fixed-point Digital Signal Processor
• Manufacturer: NEC

2.4.2 Data Memory Outline
external data memory, 16K words
The PD77019-013 has two data memory areas (64K words
Every memory areas consists of 3K words
Each data memory area includes on-chip peripheral area which consists of 64 words.
When the external data memory area is accessed, instruction cycle can be 2 or more by wait function.
Caution
When any data is accessed or stored to system address, normal operation of the device is
not assured.
0
0
0
0
0
0
0
0
0
0
0
0
0
0
x
x
x
x
x
x
x
x
x
x
x
x
x
x
C
B
F
4
4
4
3
3
3
3
3
0
0
0
C
B
F
0
F
0
0
0
F
8
8
8
7
0
F
0
F
0
0
0
F
4
3
0
F
0
F
0
16 bits external data memory space can be added to X/Y memories.
F
0
F
5
4
0
F
0
F
0
F
0
F
0
Preliminary Data Sheet
External Data Memory
Data RAM (3 K words)
System (1984 words)
Peripheral (64 words)
System (11 K words)
System (32 K words)
Boot (5 words)
PD77019-013
16 bits data RAM. As the PD77019-013 has interface with the
(16 K words)
16 bits each) in X and Y memory areas.
PD77019-013
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