參數(shù)資料
型號: IS89C51-24PLI
廠商: INTEGRATED SILICON SOLUTION INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 18/48頁
文件大?。?/td> 371K
代理商: IS89C51-24PLI
IS89C51
Integrated Silicon Solution, Inc. — 1-800-379-4774
25
MC016-1C
11/21/98
ISSI
Figure 14. Serial Port Mode 2
WRITE
TO
SBUF
LOAD
SBUF
BIT
DETECTOR
INPUT SHIFT REG.
(9 BITS)
SAMPLE
MODE 2
(SMOD IS PCON. 7)
SBUF
ZERO DETECTOR
SHIFT
RXD
TXD
Q
S
D
CL
START
TX CLOCK
START
DATA
SEND
LOAD
SBUF
SHIFT
1FFH
TX CONTROL
SERIAL
PORT
INTERRUPT
RI
RX CONTROL
SBUF
IS89C51 INTERNAL BUS
READ
SBUF
S1P1
D0
D1
D2
D3
D5
D6
D7
TB8
D4
SEND
DATA
SHIFT
TX
CLOCK
WRITE TO SBUF
TRANSMIT
RECEIVE
SHIFT
TI
÷ 16
1-TO-0
TRANSITION
DETECTOR
IS89C51 INTERNAL BUS
PHASE 2 CLOCK
(1/2 fOSC)
÷ 2
TB8
STOP BIT
TXD
BIT DETECTOR SAMPLE TIMES
TI
RI
STOP BIT GEN
RX
CLOCK
SMOD 0
SMOD 1
D0
D1
D2
D3
D5
D6
D7
D4
STOP
BIT
RXD
RX
CLOCK
÷ 16 RESET
RB8
START
BIT
START
BIT
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