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UPD17P136ACT Scheda tecnica(PDF) 97 Page - NEC

Il numero della parte UPD17P136ACT
Spiegazioni elettronici  4-BIT SINGLE-CHIP MICROCONTROLLER
PDF  292 Pages
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Produttore elettronici  NEC [NEC]
Homepage  http://www.nec.com/
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UPD17P136ACT Scheda tecnica(HTML) 97 Page - NEC

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CHAPTER 10 DATA BUFFER (DBF)
78
10.2 FUNCTIONS OF THE DATA BUFFER
The data buffer has two separate functions.
The data buffer is used for data transfer with peripheral hardware. The data buffer is also used for reading constant
data (table reference) in program memory. Figure 10-3 shows the relationship between the data buffer and peripheral
hardware.
Figure 10-3. Relationship Between the Data Buffer and Peripheral Hardware
Data buffer
(DBF)
Internal bus
Constant data
Program memory (ROM)
Peripheral
address
01H
02H
03H
04H
Peripheral hardware
Shift register (SIOSFR)
Timer 0 modulo register
(TM0M)
Timer 1 modulo register
(TM1M)
Address register (AR)
40H
A/D converter data register
(ADCR)
45H
Timer 0/timer 1 count
register (TM0TM1C)



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