參數(shù)資料
型號: P83C654EHP
廠商: NXP Semiconductors N.V.
英文描述: CMOS single-chip 8-bit microcontroller
中文描述: CMOS單芯片8位微控制器
文件頁數(shù): 26/88頁
文件大小: 497K
代理商: P83C654EHP
Philips Semiconductors
Product data
P83C654X2/P87C654X2
80C51 8-bit microcontroller family
16 kB OTP/ROM,
256B RAM, low voltage (2.7 to 5.5 V), low power, high speed
(30/33 MHz)
2004 Apr 20
26
80C51 Internal Bus
SBUF
Zero Detector
D S
CL
Write
to
SBUF
TX Control
TX Clock
Send
Data
Start
RX Control
Start
Load
SBUF
Shift
RX Clock
T1
Serial
Port
Interrupt
Input Shift Register
(9 Bits)
Load
SBUF
Shift
SBUF
Read
SBUF
80C51 Internal Bus
TxD
TB8
÷
16
1-to-0
Transition
Detector
Sample
÷
2
SMOD = 1
SMOD = 0
(SMOD is
PCON.7)
Shift
Bit Detector
RxD
Stop Bit
Gen.
Mode 2
Phase 2 Clock
(1/2 f
OSC
)
R1
÷
16
1FFH
Transmit
Send
S1P1
Shift
TX
Clock
Write to SBUF
Start Bit
TxD
Stop Bit
D0
D1
D2
D3
D4
D5
D6
D7
TI
RX
Clock
÷
16 Reset
Start
Bit
RxD
Bit Detector
Sample Times
Stop Bit
D0
D1
D2
D3
D4
D5
D6
D7
Shift
RI
Receive
Data
TB8
RB8
Stop Bit Gen.
SU00541
Figure 17. Serial Port Mode 2
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