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UPD17708 Scheda tecnica(PDF) 35 Page - NEC

Il numero della parte UPD17708
Spiegazioni elettronici  4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DEDICATED HARDWARE FOR DIGITAL TUNING SYSTEM
PDF  356 Pages
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Produttore elettronici  NEC [NEC]
Homepage  http://www.nec.com/
Logo NEC - NEC

UPD17708 Scheda tecnica(HTML) 35 Page - NEC

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µPD17704, 17705, 17707, 17708, 17709
4. DATA MEMORY (RAM)
4.1 Outline of Data Memory
Figure 4-1 outlines the data memory.
As shown in the figure, system registers, a data buffer, port registers, and port input/output selection registers
are located on the data memory.
The data memory stores data, transfers data with the peripheral hardware or ports, and controls the CPU.
Figure 4-1. Outline of Data Memory (1/3)
(a)
µPD17709
Note
Port input/output selection registers are allocated to addresses 60H through 6FH of BANK 15.
Peripheral hardware
Data transfer
Column address
Data memory
BANK0
Port registers
Port registers
Port registers
Port registers
BANK1
BANK2
BANK3
BANK4
BANK14
BANK15Note
System registers
Ports
0123456789
A
B
C
D
E
F
Data transfer
0
1
2
3
4
5
6
7
Data buffer



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