Philips Semiconductors
Preliminary data
Low power, low price, low pin count (20 pin)
microcontroller with 4 kbyte OTP
87LPC764
COMPARATOR 1
CP1
(P0.4) CIN1A
+
(P0.3) CIN1B
CO1
CMP1 (P0.6)
(P0.5) CMPREF
–
OE1
V
ref
CN1
CP2
CHANGE DETECT
CMF1
INTERRUPT
COMPARATOR 2
(P0.2) CIN2A
(P0.1) CIN2B
+
CO2
CMP2 (P0.0)
–
OE2
CHANGE DETECT
CN2
CMF2
INTERRUPT
SU01153
Figure 3. Comparator Input and Output Connections
CPn, CNn, OEn = 0 0 0
CPn, CNn, OEn = 0 0 1
+
–
CINnA
CMPREF
+
CINnA
COn
COn
CMPn
–
CMPREF
CPn, CNn, OEn = 0 1 0
CPn, CNn, OEn = 0 1 1
+
+
CINnA
Vref (1.23V)
CINnA
COn
COn
CMPn
V
(1.23V)
–
ref
–
CPn, CNn, OEn = 1 0 0
CPn, CNn, OEn = 1 0 1
+
–
+
CINnB
CINnB
COn
COn
CMPn
–
CMPREF
CMPREF
CPn, CNn, OEn = 1 1 0
CPn, CNn, OEn = 1 1 1
+
–
+
CINnB
CINnB
COn
COn
CMPn
V
(1.23V)
V
(1.23V)
ref
ref
–
SU01154
Figure 4. Comparator Configurations
9
2001 Oct 26
NXP [ NXP ]
