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P89C51RB2BA датащи(PDF) 13 Page - NXP Semiconductors

номер детали P89C51RB2BA
подробное описание детали  80C51 8-bit Flash microcontroller family 16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM
PDF  52 Pages
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производитель  PHILIPS [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

P89C51RB2BA датащи(HTML) 13 Page - NXP Semiconductors

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Philips Semiconductors
Preliminary specification
89C51RB2/89C51RC2/
89C51RD2
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM
1999 Sep 23
13
OSC
÷ n*
C/T2 = 0
C/T2 = 1
TR2
CONTROL
TL2
(8-BITS)
TH2
(8-BITS)
TF2
RCAP2L
RCAP2H
EXEN2
CONTROL
EXF2
TIMER 2
INTERRUPT
T2EX PIN
TRANSITION
DETECTOR
T2 PIN
RELOAD
SU01253
* n = 6 in 6 clock mode, or 12 in 12 clock mode.
Figure 4. Timer 2 in Auto-Reload Mode (DCEN = 0)
÷ n*
C/T2 = 0
C/T2 = 1
TL2
TH2
TR2
CONTROL
T2 PIN
SU01254
FFH
FFH
RCAP2L
RCAP2H
(UP COUNTING RELOAD VALUE)
T2EX PIN
TF2
INTERRUPT
COUNT
DIRECTION
1 = UP
0 = DOWN
EXF2
OVERFLOW
(DOWN COUNTING RELOAD VALUE)
TOGGLE
OSC
* n = 6 in 6 clock mode, or 12 in 12 clock mode.
Figure 5. Timer 2 Auto Reload Mode (DCEN = 1)



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