參數(shù)資料
型號: ST63E69D1
廠商: 意法半導(dǎo)體
英文描述: 8-BIT HCMOS MCU FOR DIGITAL CONTROLLED MULTI FREQUENCYMONITOR
中文描述: 8位HCMOS單片機(jī)的數(shù)控多FREQUENCYMONITOR
文件頁數(shù): 29/71頁
文件大小: 584K
代理商: ST63E69D1
Figure28. I/OConfiguration Diagram
(Open Drain 12V)
Figure29. I/OConfiguration Diagram (Open Drain 5V, Push-pull)
Input/Output Configurations
The following schematics show the I/Olines hard-
ware configuration for the different options. Fig-
ure 28 shows the I/O configuration for an I/O pin
with open-drain12V capability(standard drive and
high drive). Figure 29 shows the I/Oconfiguration
for an I/Opinwith push-pulland withopendrain 5V
capability.
Notes :
The WAIT instruction allows the ST6369 to be
used insituationswhere low power consumptionis
needed. This can only be achievedhowever if the
I/Opins either are programmed as inputs with well
defined logic levels or have no power consuming
resistive loadsin outputmode.The unavailable I/O
lines PB0,PB3 and PB7 should beprogrammed in
output mode.
Single-bit operations on I/Oregisters are possible
but
care is necessary
because reading in input
mode is made from I/O pins while writing will di-
rectlyaffectthe Portdataregister causingan unde-
sired changes of the input configuration.
INPUT/OUTPUT PORTS
(Continued)
ST6369
25/67
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