p87lpc778-01 NXP Semiconductors, p87lpc778-01 Datasheet - Page 62

• Manufacturer Part Number: p87lpc778-01
• Description: P87lpc778 Cmos Single-chip 8-bit 80c51 Microcontroller With 128-byte Data Ram, 8 Kb Otp
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 12378
Product data
Fig 26. Serial port mode 3.
sample times
stop bit gen
bit detector
TX clock
write to
SBUF
clock
send
SMOD1 = 0
data
RxD
shift
TxD
shift
RX
RI
TI
overflow
timer 1
2
function
P3.0 alt
write to
SBUF
input
RxD
16 reset
SMOD1 = 1
TRANSITION
DETECTOR
1-TO-0
start
bit
start
16
bit
D
CL
TB8
D0
D0
S
DETECTOR
Q
SBUF
SBUF
load
START
TX CLOCK
BIT
read
START
D1
D1
16
CLOCK
Rev. 01 — 31 March 2004
RX
D2
D2
RX CONTROL
TX CONTROL
ZERO DETECTOR
INPUT SHIFT REGISTER
80C51 INTERNAL BUS
TI
80C51 internal bus
D3
RI
D3
SBUF
SBUF
D4
1FFH
D4
LOAD SBUF
SHIFT
SHIFT
SEND
DATA
D5
D5
CMOS single-chip 8-bit microcontroller
D6
D6
serial port
interrupt
D7
D7
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
TB8
RB8
P87LPC778
stop bit
stop bit
TxD
002aaa644
transmit
receive
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