P87LPC764BD NXP Semiconductors, P87LPC764BD Datasheet - Page 11

• Manufacturer Part Number: P87LPC764BD
• Description: MCU 8-Bit 87LP 80C51 CISC 4KB EPROM 5V 20-Pin SO Tube
• Manufacturer: NXP Semiconductors

Specifications of P87LPC764BD

• Package: 20SO
• Device Core: 80C51
• Family Name: 87LP
• Maximum Speed: 20 MHz
• Ram Size: 128 Byte
• Program Memory Size: 4 KB
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Program Memory Type: EPROM
• Number Of Programmable I/os: 18
• Interface Type: I2C/UART
• Operating Temperature: 0 to 70 °C
• Number Of Timers: 2

Philips Semiconductors
2003 Sep 03
Low power, low price, low pin count (20 pin)
microcontroller with 4 kbyte OTP
(P0.5) CMPREF
(P0.4) CIN1A
(P0.3) CIN1B
(P0.2) CIN2A
(P0.1) CIN2B
CMPREF
CMPREF
Vref (1.23V)
V
ref
CINnA
CINnA
CINnB
CINnB
(1.23V)
CPn, CNn, OEn = 0 0 0
CPn, CNn, OEn = 0 1 0
CPn, CNn, OEn = 1 0 0
CPn, CNn, OEn = 1 1 0
V
ref
+
+
+
+
–
–
–
–
Figure 3. Comparator Input and Output Connections
CP1
CN1
CP2
CN2
COn
COn
COn
COn
Figure 4. Comparator Configurations
COMPARATOR 1
COMPARATOR 2
+
+
–
–
10
CO1
CO2
CHANGE DETECT
CHANGE DETECT
CMPREF
CMPREF
V
V
ref
ref
CINnA
CINnA
CINnB
CINnB
OE1
OE2
(1.23V)
(1.23V)
CPn, CNn, OEn = 0 0 1
CPn, CNn, OEn = 0 1 1
CPn, CNn, OEn = 1 0 1
CPn, CNn, OEn = 1 1 1
CMF2
CMF1
+
+
+
+
–
–
–
–
COn
COn
COn
COn
CMP1 (P0.6)
CMP2 (P0.0)
INTERRUPT
P87LPC764
INTERRUPT
SU01153
CMPn
CMPn
CMPn
CMPn
SU01154
Product data