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UPD17708 Datasheet(PDF) 35 Page - NEC

No. de pieza UPD17708
Descripción Electrónicos  4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DEDICATED HARDWARE FOR DIGITAL TUNING SYSTEM
PDF  356 Pages
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Fabricante Electrónico  NEC [NEC]
Página de inicio  http://www.nec.com/
Logo NEC - NEC

UPD17708 Datasheet(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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