p80c52x2 NXP Semiconductors, p80c52x2 Datasheet - Page 26
p80c52x2
Manufacturer Part Number
p80c52x2
Description
80c51 8-bit Microcontroller Family 4k/8k/16k/32k Rom/otp 128b/256b Ram
Manufacturer
NXP Semiconductors
Datasheet
1.P80C52X2.pdf
(62 pages)
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Philips Semiconductors
2003 Jan 24
80C51 8-bit microcontroller family
4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),
low power, high speed (30/33 MHz)
TxD (Shift Clock)
TI
RI
Receive
Shift
RxD (Data In)
TxD (Shift Clock)
Send
Shift
RxD (Data Out)
S4 . .
ALE
S1
Write to SBUF
Write to SCON (Clear RI)
. . . .
S6P2
SBUF
Write
to
S6
S6
REN
RI
S1
. . . .
D0
S3P1
S6
D0
S1
Interrupt
S5P2
Serial
Port
. . . .
D1
D
S6P1
CL
S
S6
D1
Q
S1
LSB
. . . .
TX Clock
Start
Read
SBUF
Start
RX Clock
D2
S6
LSB
Load
SBUF
Figure 14. Serial Port Mode 0
D2
Zero Detector
S1
TX Control
RX Control
1
. . . .
D3
80C51 Internal Bus
80C51 Internal Bus
1
T1
R1
Input Shift Register
SBUF
1
S6
D3
1
SBUF
S1
26
1
. . . .
D4
1
Receive
1
S6
Shift
Send
Shift
D4
0
S1
Shift
MSB
. . . .
D5
MSB
S6
D5
S1
. . . .
D6
Shift
Clock
S6
P80C3xX2; P80C5xX2;
D6
S1
. . . .
D7
Function
P3.0 Alt
Input
RxD
S6
D7
S1
Function
P3.0 Alt
Output
. . . .
RxD
S6
P87C5xX2
Function
P3.1 Alt
Output
S1
TxD
Product data
Transmit
Receive
SU00539
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