參數(shù)資料
型號: ST52T301P
廠商: 意法半導(dǎo)體
英文描述: 8-Bit OTP/EPROM DuaLogic] MCUs WITH ADC, UART, TIMER, TRIAC & PWM DRIVER
中文描述: 8位檢察官辦公室/存儲器DuaLogic]與藝術(shù)發(fā)展局和UART,定時器,可控硅控制器
文件頁數(shù): 38/100頁
文件大小: 497K
代理商: ST52T301P
8.2 INPUT HANDSHAKE
Figure8.5 illustratesthe timingassociatedwith the
READY Handshake signal, when the instruction
LDRI reg 6 is performed.
When the LDRI instruction is executedto read the
port, ST52x301 resets the READY signal to
indicate that it is not possibleto change the input
dataduring this phaseof reading.
TosynchronizethetransmissionwithREADYsignal
will prevent the INP_PORT data from changing
whileST52x301 is readingthe port.
READ PORTsignal representedin figure 8.5 is an
ST52x301internal signal.
Input data on the port are continuously sampled
and are strobedinto the port onlywhen READY is
set.
W.A.R.P3TC
x
x
x
x
x
x
0
x
REG_CONF1
P(7:0)
IOP
EXTERNAL
PERIPHERAL
DATA
READY
I/O
PORT
Figure 8.4.One Line InputHandshake
PIO(7:0)
READY
DATAIN
READ PORT
CLK
NEWDATA IN
Figure8.5.One Line Input HandshakeTiming
38/99
ST52T301/E301
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