|Product>>8051 MicroController>>STC15F408AD 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 8K / 13K 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/T2(their falling edge can wake up
if T0/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
MCLK is the frequency of master clock. MCLKO is the output of master clock.
(such as STC15F104W series). However, it is on MCLKO/P5.4 that the Programmable clock output of
master clock of other STC15 series MCU including 16-pin or more than 16-pin MCU(such as
STC15F4K60S4 and so on)
ports mode) after reset, and can be set to four modes: quasi_bidirectional/weak pull-up, strong push-pull/
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.
STC15W401AS series to replace them).
General Overview: STC15F408AD_Features.pdf
Data Sheet: STC15F408AD.pdf
ISP programming software ：STC ISP programming software (v6.28)
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