P87LPC762BD NXP Semiconductors, P87LPC762BD Datasheet - Page 42

• Manufacturer Part Number: P87LPC762BD
• Description: MCU 8-Bit 87LP 80C51 CISC 2KB EPROM 5V 20-Pin SO Tube
• Manufacturer: NXP Semiconductors

Specifications of P87LPC762BD

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

Philips Semiconductors
2001 Oct 26
TX CLOCK
WRITE TO SBUF
SEND
DATA
SHIFT
TxD
TI
STOP BIT GEN.
RX CLOCK
RxD
BIT DETECTOR SAMPLE TIMES
SHIFT
RI
Low power, low price, low pin count (20 pin)
microcontroller with 2 kbyte OTP
WRITE TO SBUF
SMOD1 = 0
PHASE 2 CLOCK
(1/2 f
FUNCTION
P1.1 ALT
16 RESET
2
INPUT
OSC
RxD
)
SMOD1
= 1
TRANSITION
DETECTOR
START
START
BIT
1-TO-0
BIT
16
D0
D
CL
D0
BIT DETECTOR
TB8
S
LOAD
SBUF
Q
READ
SBUF
TX CLOCK
START
START
D1
D1
16
Figure 31. Serial Port Mode 2
STOP BIT GEN.
CLOCK
D2
D2
RX
ZERO DETECTOR
TX CONTROL
RX CONTROL
INPUT SHIFT REGISTER
80C51 INTERNAL BUS
80C51 INTERNAL BUS
D3
D3
TI
RI
39
SBUF
SBUF
D4
D4
1FFH
LOAD SBUF
SHIFT
SHIFT
DATA
SEND
D5
D5
D6
D6
SERIAL PORT INTERRUPT
D7
D7
TB8
RB8
STOP BIT
STOP BIT
87LPC762
TxD
P1.0 ALT OUTPUT
FUNCTION
Preliminary data
TRANSMIT
SU01180
RECEIVE