p87c591vfb NXP Semiconductors, p87c591vfb Datasheet - Page 68

• 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
ALE
Send
Shift
RxD (Data Out)
TxD (Shift Clock)
TI
RI
Receive
Shift
RxD (Data In)
TxD (Shift Clock)
S4
. .
S1
Write to SBUF
Write to SCON (Clear RI)
S6P2
. . . .
S6 S1
write to SBUF
S6
. . . .
D0
REN
S3P1
RI
S6 S1
D0
S5P2
serial port interrupt
. . . .
D1
S6P1
S6 S1
D1
D
CL
LSB
S
TX Clock
RX Clock
Start
Start
. . . .
LSB
D2
Q
read SBUF
load SBUF
Fig.25 Serial Port Mode 0.
ZERO DETECTOR
S6 S1
INPUT SHIFT REGISTER
D2
1
RX CONTROL
TX CONTROL
1
80C51 INTERNAL BUS
80C51 INTERNAL BUS
. . . .
R1
T1
1
D3
SBUF
1
SBUF
1
S6 S1
D3
68
1
Receive
1
. . . .
Send
D4
Shift
Shift
0
shift
MSB
MSB
S6 S1
D4
. . . .
D5
CLOCK
SHIFT
S6 S1
D5
P3.0 Alt
function
input
RxD
. . . .
D6
S6 S1
D6
. . . .
D7
P3.0 Alt
function
P3.1 Alt
function
output
output
RxD
TxD
S6 S1
Preliminary Specification
D7
. . . .
MHI026
P8xC591
S6 S1
Transmit
Receive