p87c591vfb NXP Semiconductors, p87c591vfb Datasheet - Page 70

• Manufacturer Part Number: p87c591vfb
• Description: Single-chip 8-bit Microcontroller With Can Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2000 Jul 26
handbook, full pagewidth
Single-chip 8-bit microcontroller with CAN controller
write to SBUF
Bit detector sample times
Stop bit gen.
RX Clock
TX Clock
Send
Data
Shift
Shift
RxD
TxD
RI
TI
BAUD RATE CLOCK
S1P1
write to SBUF
RxD
16 Reset
Start
bit
Start
bit
TRANSITION
DETECTOR
1-to-0
D0
D0
sample
16
serial port interrupt
BIT DETECTOR
Fig.27 Serial Port Mode 2 and 3.
D1
D1
D
CL
S
Start
TX Clock
Start
TB8
Q
D2
D2
read SBUF
16
load SBUF
Stop bit
gen.
ZERO DETECTOR
INPUT SHIFT REGISTER
RX Clock
RX CONTROL
TX CONTROL
80C51 INTERNAL BUS
80C51 INTERNAL BUS
D3
D3
70
(9 BITS)
SBUF
SBUF
T1
R1
D4
D4
Shift
1FFH
load
SBUF
Send
Data
Shift
shift
D5
D5
D6
D6
D7
D7
TB8
TB8
TxD
Preliminary Specification
Stop bit
Stop bit
MHI028
P8xC591
Transmit
Receive