Enhanced 8051 Central Processing Unit, 1T, single clock per machine cycle, faster 8~12 times
T0/T1/T2 all can independently achieve external programmable clock output 3 channels) .
3 channels CCP PCA PWM also can be used as three Timers
or the input clock of external pin):
The Programmable clock output of T0 is on P3.5/T0CLKO (output by dividing the frequency of the
internal system clock or the input clock of external pin T0/P3.4)
The Programmable clock output of T1 is on P3.4/T1CLKO (output by dividing the frequency of the
internal system clock or the input clock of external pin T1/P3.5)
The Programmable clock output of T2 is on P3.0/T2CLKO (output by dividing the frequency of the
internal system clock or the input clock of external pin T2/P3.1)
Three timers/counters in above all can be output by dividing the frequency from 1 to 65536.
The Programmable clock output of master clock is on P5.4/MCLKO, and its frequency can be
divided into MCLK/1, MCLK/2, MCLK/4.
The master clock can either be internal R/C clock or the external input clock or the external crystal
MCLK is the frequency of master clock. MCLKO is the output of master clock.
(traditional 8051 I/O ports mode) after reset, and can be set to four modes: quasi_bidirectional /
weak pull-up, strong pushpull/ strong pull-up, input-only/high-impedance and open drain.
the driving ability of each I/O port can be up to 20mA, but it don't exceed this maximum 120mA that
the current of the whole chip of 40-pin or more than 40-pin MCU, while 90mA that the current of the
of 16-pin or more than 16-pin MCU or 32-pin or less than 32-pin MCU.
General Overview: STC15W1K16S_Features.pdf
Data Sheet: STC15F2K32S2.pdf
ISP programming software ：STC ISP programming software (v6.28)
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|STC15W1K16S series Selection Table|
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