- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄299943 > ST52440F2 MAX 7000 CPLD 64 MC 100-TQFP PDF資料下載
參數(shù)資料
| 型號： | ST52440F2 |
| 英文描述： | MAX 7000 CPLD 64 MC 100-TQFP |
| 中文描述： | 8位重癥監(jiān)護(hù)病房與定時(shí)器/脈寬調(diào)制。模擬比較器。可控硅/ PWM定時(shí)器。水分散粒劑。提供了8K存儲器 |
| 文件頁數(shù)： | 49/88頁 |
| 文件大小： | 1162K |
| 代理商： | ST52440F2 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁當(dāng)前第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁
ST52T430/E430
53/88
The Output Register PWM_x_RELOAD value is
automatically reloaded when Counter x restarts
counting.
The 16-bit Prescaler x divides the master clock,
CLKM, or, only for TIMER0, the external T0CLK
signal, by the 16-bit Prescaler x.
NOTE: The external clock signal, applied on
T0CLK pin must have a frequency at least two
times smaller than the internal master clock.
The Prescaler x output can be selected by setting
PRESCx bit of REG_CONF6, REG_CONF9 and
REG_CONF11 registers (see Table 10.2, Table
10.5 and Table 10.7).
When Counter x reaches the Peripheral Register
PWM_x_COUNT
value
(Compare
Value),
TIMERxOUT signal changes from high to low level,
up to the next counter start.
The period of the PWM signal is obtained by using
the following equation:
T = (255 - PWM _x_RELOAD)x TMR CLKx
where TMRCLKx is the output of the 16-bit
prescaler x.
The duty cycle of the PWM signal is controlled by
the Output Register PWM_x_COUNT:
Ton =(PWM_x_COUNT- PWM_x_RELOAD)*
TMRCLKx
If the Output Register PWM_x_COUNT value is
255 the TIMERxOUT signal is always at a high
level.
If the Output Register PWM_x_COUNT is 0, or
less
than
the
PWM_x_RELOAD
value,
TIMERxOUT signal is always at a low level.
NOTE. If PWM_x_RELOAD value increases the
duty cycle resolution decreases.
By using a 20 MHz clock master a PWM frequency
in the range 1.2 Hz to 78.43 Khz can be obtained.
NOTE: loading new values of the counter in the
PWM_x_COUNT register, in order to avoid side
effects, the PWM/Timer counter is updated only
at the end of the counting cycle.
WARNING: loading new values of the reload in
the PWM_x_RELOAD registers, the PWM/Timer
is immediately set on-fly. This can cause some
side effects during the current counting cycle.
The next cycles work normally. This occurs
both in Timer and in PWM mode.
When the Timers are in Reset, or when the
device is reset, TxOut pins go in threestate. If
these outputs are used to drive external
devices it is recommended to put a pull-up or a
pull-down resistor.
10.3 Timer Interrupt
TIMERx can be programmed to generate an
Interrupt request until the end of the count or when
there is an external TSTART signal. The Timer can
generate programmable Interrupts into 4 different
modes:
Interrupt mode 1: Interrupt on counter Stop.
Interrupt mode 2: Interrupt on Rising Edge of
TIMEROUT.
Interrupt mode 3: Interrupt on Falling Edge of
TIMEROUT.
Interrupt mode 4: Interrupt on both edges of
TIMEROUT.
Interrupt mode can be selected by means of
INTSLx and INTEx bits of the REG_CONF5,
REG_CONF8 and REG_CONF10 registers (see
NOTE: the interrupt on TIMEROUT rising edge
is also generated after the Start.
WARNING: the first interrupt after starting
PWM is not generated if the counter value is 0,
255, or lower than the reload value. If the PWM/
Timer is configured with the Interrupt on Stop
and the Start/Stop is configured as external, a
low signal in the STRT pin determines a PWM/
Timer interrupt even if the peripheral is off. If
the interrupt is configured on falling edge, a
reset signal generates an interrupt request.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST52440F3 | MAX 7000 CPLD 64 MC 44-TQFP |
| ST52440G2 | MAX 7000 CPLD 64 MC 44-TQFP |
| ST52440G3 | MAX 7000 CPLD 64 MC 44-TQFP |
| ST52501LF1 | MAX 7000 CPLD 128 MC 84-PLCC |
| ST52501LF2 | MAX 7000 CPLD 128 MC 100-TQFP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST52440F3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT ICU WITH TIMER/PWM. ANALOG COMPARATOR. TRIAC/PWM TIMER. WDG. UP TO 8K EPROM |
| ST52440G2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT ICU WITH TIMER/PWM. ANALOG COMPARATOR. TRIAC/PWM TIMER. WDG. UP TO 8K EPROM |
| ST52440G3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT ICU WITH TIMER/PWM. ANALOG COMPARATOR. TRIAC/PWM TIMER. WDG. UP TO 8K EPROM |
| ST5-24B19 | 功能描述:電源變壓器 SPLIT BOBBIN HORZ MOUNT XFMR RoHS:否 制造商:Triad Magnetics 功率額定值:12 VA 初級電壓額定值:115 V / 230 V 次級電壓額定值:12 V / 24 V 安裝風(fēng)格:SMD/SMT 一次繞組:Dual Primary Winding 二次繞組:Dual Secondary Winding 長度:2.5 in 寬度:2 in 高度:1.062 in |
| ST525 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TRANSISTOR | BJT | NPN | 200V V(BR)CEO | 5A I(C) | TO-3 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。