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P89V51RB2BBC Datasheet(PDF) 52 Page - NXP Semiconductors

Part # P89V51RB2BBC
Description  8-bit 80C51 5 V low power 16/32/64 kB flash microcontroller with 1 kB RAM
PDF  80 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

P89V51RB2BBC Datasheet(HTML) 52 Page - NXP Semiconductors

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P89V51RB2_RC2_RD2_5
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 12 November 2009
52 of 80
NXP Semiconductors
P89V51RB2/RC2/RD2
8-bit microcontrollers with 80C51 core
6.9.3 High-speed output mode
In this mode (Figure 25) the CEX output (on port 1) associated with the PCA module will
toggle each time a match occurs between the PCA counter and the module’s capture
registers. To activate this mode the TOG, MAT, and ECOM bits in the module’s CCAPMn
SFR must be set.
Fig 24. PCA compare mode
002aaa539
CF
CR
-
CCF4
CCF3
CCF2
CCF1
CCF0
CCON
(D8H)
PCA
interrupt
-
ECOMn
00
1
0
0
CAPPn
CAPNn
MATn
TOGn
PWMn
ECCFn
CCAPMn, n = 0 to 4
(DAH to DEH)
16-BIT COMPARATOR
PCA timer/counter
CH
CL
match
(to CCFn)
CCAPnH
CCAPnL
enable
write to
CCAPnH
write to
CCAPnL
reset
01



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