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Teilenummer | 87LPC764 |
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Beschreibung | Low power/ low price/ low pin count 20 pin microcontroller with 4 kbyte OTP | |
Hersteller | NXP Semiconductors | |
Logo | ||
Gesamt 56 Seiten 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
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 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 | ||
Seiten | Gesamt 56 Seiten | |
PDF Download | [ 87LPC764 Schematic.PDF ] |
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