參數(shù)資料
型號： P80C34X2
廠商： NXP Semiconductors N.V.
英文描述： 80C51 8-bit microcontroller family 4K/8K/16K/32K ROM/OTP 128B/256B RAM low voltage 2.7 to 5.5 V, low power, high speed 30/33 MHz
中文描述： 80C51的8位單片機(jī)系列4K/8K/16K/32K的ROM / RAM的檢察官辦公室128B/256B低電壓2.7至5.5 V，低功耗，高速33分之30兆赫
文件頁數(shù)： 27/62頁
文件大?。?/td> 403K
代理商： P80C34X2
Philips Semiconductors
Product data
P80C3xX2; P80C5xX2;
P87C5xX2
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)
2003 Jan 24
27
80C51 Internal Bus
SBUF
Zero Detector
D S
CL
Write
to
SBUF
TX Control
TX Clock
Send
Data
Start
RX Control
Start
RX Clock RI
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
Timer 1
Overflow
SMOD = 1
SMOD = 0
Shift
Bit Detector
Transmit
Send
S1P1
Shift
TX
Clock
Write to SBUF
Start Bit
TxD
Stop Bit
D0
D1
D2
D3
D4
D5
D6
D7
TI
RxD
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
÷
16
Load
SBUF
Shift
1FFH
SU00540
Figure 15. Serial Port Mode 1
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