參數(shù)資料
型號: IS80C31-12PQI
廠商: INTEGRATED SILICON SOLUTION INC
元件分類: 微控制器/微處理器
英文描述: CMOS SINGLE CHIP 8-BIT MICROCONTROLLER
中文描述: 8-BIT, 12 MHz, MICROCONTROLLER, PQFP44
封裝: PLASTIC, QFP-44
文件頁數(shù): 21/43頁
文件大?。?/td> 337K
代理商: IS80C31-12PQI
IS80C51
IS80C31
Integrated Silicon Solution, Inc. — 1-800-379-4774
MC003-1D
11/19/98
21
ISSI
Figure 12. Serial Port Mode 0
WRITE
TO
SBUF
LOAD
SBUF
REN
RI
SBUF
ZERO DETECTOR
SHIFT
SHIFT
RXD
P3.0 ALT
OUTPUT
FUNCTION
TXD
P3.1 ALT
OUTPUT
FUNCTION
RXD
P3.0 ALT
INPUT
FUNCTION
Q
S
D
CL
START
TX CLOCK
RX CLOCK
START
SHIFT
SEND
RECEIVE
SHIFT
TX CONTROL
S6
SERIAL
PORT
INTERRUPT
SHIFT
CLOCK
RI
RX CONTROL
1 1 1 1 1 1 1 0
INPUT SHIFT REG.
SBUF
IS80C51/31 INTERNAL BUS
READ
SBUF
IS80C51/31 INTERNAL BUS
S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1
ALE
SEND
SHIFT
SHIFT
RXD (D
IN
)
TI
RXD (D
OUT
)
TXD (SHIFT CLOCK)
WRITE TO SBUF
S6P2
S5P2
S6P1
S3P1
D0
D1
D2
D3
D5
D6
D7
D4
RI
RECEIVE
TXD (SHIFT CLOCK)
WRITE TO SCON (CLEAR RI)
D0
D1
D2
D3
D5
D6
D7
D4
TRANSMIT
RECEIVE
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