|Product>>8051 MicroController>>STC15W401AS series|
Enhanced 8051 Central Processing Unit, 1T, single clock per machine cycle, faster 8~12 times
than the rate of
a traditional 8051.
On-chip 4K/8K/10K/12K/13K/15.5K FLASH program memory with flexible ISP/IAP capability,
can be repeatedly erased more than 100 thousand times.
On-chip EEPROM with large capacity can be repeatedly erased more than 100 thousand times.
per second, 3 channels PWM also can be used as 3 channels D/A Converter(DAC).
---- can be used as 3 Times or 3 external Interrupts
(can be generated on rising or falling edge) or 3 channels D/A Converter
(each channel of which takes less than 0.6% system time)
of accuracy (which takes less than 0.4% system time)
external reset curcuit can be completely removed
in normal temperature and wide frenquency adjustable between 5MHz and 35MHz (5.5296MHz /
11.0592MHz / 22.1184MHz / 33.1776MHz).
--UART(RxD/P3.0, TxD/P3.1) can be switched to (RxD_2/P3.6, TxD_2/P3.7),
also can be switched to (RxD_3/P1.6, TxD_3/P1.7).
A high-speed synchronous serial peripheral interface----SPI.
Stop/Power- Down mode.
Timers which can wake up stop/power-down mode: have internal low-power special wake-up Timer.
INT0/P3.2, INT1/P3.3 (INT0/INT1, may begenerated on both rising and falling edges),
INT2/P3.6, INT3/P3.7, INT4/P3.0 (INT2 /INT3/INT4, only be generated on falling edge);
pins CCP0/CCP1/CCP2; pins T0/T1/T2(their falling edge can wake up
if T0/T1/T2 have been enabled before power-down mode, but no interrupts can be generatetd);
low-power special wake-up Timer.
with Timer0/Timer1 of traditional 8051)
T0/T2 all can independently achieve external programmable clock output,
3 channels CCP/PWM/PCA also can be used as three timers.
or the input clock of external pin):
he 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 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
SysClk/1, SysClk/2, SysClk/4.
The master clock can either be internal R/C clock or the external input clock or the external crystal
SysClk is the frequency of master clock. SysClkO 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 90mA that
If I/O ports are not enough, it can be extended by connecting a 74HC595
Besides, cascading several chips also can extend to dozens of I/O ports.
General Overview: STC15W408AS_Features.pdf
Data Sheet: STC15W408AS.pdf
ISP programming software ：STC ISP programming software (v6.28)
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