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87LPC764 Schematic ( PDF Datasheet ) - NXP Semiconductors

Teilenummer 87LPC764
Beschreibung Low power/ low price/ low pin count 20 pin microcontroller with 4 kbyte OTP
Hersteller NXP Semiconductors
Logo NXP Semiconductors Logo 




Gesamt 56 Seiten
87LPC764 Datasheet, Funktion
INTEGRATED CIRCUITS
87LPC764
Low power, low price, low pin count
(20 pin) microcontroller with 4 kbyte OTP
Preliminary data
Supersedes data of 2001 Apr 04
IC28 Data Handbook
2001 Oct 26
Philips
Semiconductors






87LPC764 Datasheet, Funktion
Philips Semiconductors
Low power, low price, low pin count (20 pin)
microcontroller with 4 kbyte OTP
BLOCK DIAGRAM
Preliminary data
87LPC764
ACCELERATED
80C51 CPU
CRYSTAL OR
RESONATOR
4K BYTE
CODE EPROM
INTERNAL BUS
128 BYTE
DATA RAM
PORT 2
CONFIGURABLE I/OS
PORT 1
CONFIGURABLE I/OS
PORT 0
CONFIGURABLE I/OS
KEYPAD
INTERRUPT
CONFIGURABLE
OSCILLATOR
ON-CHIP
RC
OSCILLATOR
UART
I2C
TIMER 0, 1
WATCHDOG TIMER
AND OSCILLATOR
ANALOG
COMPARATORS
POWER MONITOR
(POWER-ON RESET,
BROWNOUT RESET)
SU01151
2001 Oct 26
3

6 Page









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

12 Page





SeitenGesamt 56 Seiten
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