参数资料
型号: IS89C51-40PQ
厂商: INTEGRATED SILICON SOLUTION INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP44
封装: PLASTIC, QFP-44
文件页数: 17/48页
文件大小: 371K
代理商: IS89C51-40PQ
IS89C51
24
1-800-379-4774 — Integrated Silicon Solution, Inc.
MC016-1C
11/21/98
ISSI
Figure 13. Serial Port Mode 1
WRITE
TO
SBUF
LOAD
SBUF
BIT
DETECTOR
INPUT SHIFT REG.
(9 BITS)
SAMPLE
RCLK
"0"
"1"
TCLK
SMOD
= 1
SMOD
= 0
SBUF
ZERO DETECTOR
SHIFT
RXD
TXD
Q
S
D
CL
START
RX 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
D4
D0
D1
D2
D3
D5
D6
D7
D4
SEND
DATA
SHIFT
TX CLOCK
WRITE TO SBUF
TRANSMIT
RECEIVE
SHIFT
TI
÷ 16
1-TO-0
TRANSITION
DETECTOR
IS89C51 INTERNAL BUS
TIMER 1
OVERFLOW
TIMER 2
OVERFLOW
÷ 2
TB8
STOP BIT
START
BIT
START
BIT
TXD
RXD
BIT DETECTOR SAMPLE TIMES
TI
RI
RX
CLOCK
÷ 16 RESET
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