P87LPC768 NXP Semiconductors, P87LPC768 Datasheet - Page 49

• Manufacturer Part Number: P87LPC768
• Description: The P87LPC768 is a 20-pin single-chip microcontroller designed forlow pin count applications demanding high-integration, low costsolutions over a wide range of performance requirements
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2002 Mar 12
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 4 kB OTP 8-bit A/D, Pulse Width Modulator
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 34. 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
47
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
P87LPC768
TxD
P1.0 ALT OUTPUT
FUNCTION
Preliminary data
TRANSMIT
SU01180
RECEIVE