P87LPC779 Ver la hoja de datos (PDF) - Philips Electronics
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Fabricante
P87LPC779
Philips Electronics
P87LPC779 Datasheet PDF : 74 Pages
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Philips Semiconductors
P87LPC779
CMOS single-chip 8-bit microcontroller
(P0.4) CIN1A
(P0.3) CIN1B
(P0.5) CMPREF
VREF
CP1
CN1
Comparator 1
CO1
OE1
Change Detect
CMF1
CMP1 (P0.6)
Interrupt
(P0.2) CIN2A
(P0.1) CIN2B
CP2
Comparator 2
OE2
CO2
CN2
Change Detect
CMF2
Fig 7. Comparator input and output connections.
CMP2 (P0.0)
Interrupt
002aaa617
CINnA
CMPREF
COn
002aaa618
a. CPn, CNn, OEn = 0 0 0
CINnA
CMPREF
COn
002aaa620
CMPn
b. CPn, CNn, OEn = 0 0 1
CINnA
VREF (1.23V)
COn
002aaa621
c. CPn, CNn, OEn = 0 1 0
CINnA
VREF (1.23 V)
COn
002aaa622
CMPn
d. CPn, CNn, OEn = 0 1 1
CINnB
CMPREF
COn
002aaa623
e. CPn, CNn, OEn = 1 0 0
CINnB
CMPREF
COn
002aaa624
CMPn
f. CPn, CNn, OEn = 1 0 1
CINnB
VREF (1.23V)
COn
002aaa625
g. CPn, CNn, OEn = 1 1 0
Fig 8. Comparator configurations.
CINnB
VREF (1.23 V)
COn
002aaa626
CMPn
h. CPn, CNn, OEn = 1 1 1
8.6.2 Internal reference voltage
An internal reference voltage generator may supply a default reference when a single
comparator input pin is used. The value of the internal reference voltage, referred to
as Vref, is 1.28 V ±10 %.
9397 750 13213
Product data
Rev. 02 — 03 May 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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