參數(shù)資料
型號： ST72C314J4
元件分類： 圖像傳感器
英文描述： CMOS Image Sensor
中文描述： CMOS圖像傳感器
文件頁數(shù)： 102/153頁
文件大?。?/td> 1988K
代理商： ST72C314J4
ST72334J/N, ST72314J/N, ST72124J
52/153
14.2 MAIN CLOCK CONTROLLER WITH REAL TIME CLOCK TIMER (MCC/RTC)
The Main Clock Controller consists of three differ-
ent functions:
s
a programmable CPU clock prescaler
s
a clock-out signal to supply external devices
s
a real time clock timer with interrupt capability
Each function can be used independently and si-
multaneously.
14.2.1 Programmable CPU clock prescaler
The programmable CPU clock prescaler supplies
the clock for the ST7 CPU and its internal periph-
erals. It manages SLOW power saving mode (See
details).
The prescaler selects the fCPU main clock frequen-
cy and is controlled by three bits in the MISCR1
register: CP[1:0] and SMS.
CAUTION: The prescaler does not act on the CAN
peripheral clock source. This peripheral is always
supplied by the fOSC/2 clock source.
14.2.2 Clock-out capability
The clock-out capability is an alternate function of
an I/O port pin that outputs a fOSC/2 clock to drive
external devices. It is controlled by the MCO bit in
the MISCR1 register.
CAUTION: When selected, the clock out pin sus-
pends the clock during ACTIVE-HALT mode.
14.2.3 Real time clock timer (RTC)
The counter of the real time clock timer allows an
interrupt to be generated based on an accurate
real time clock. Four different time bases depend-
ing directly on fOSC are available. The whole func-
tionality is controlled by four bits of the MCCSR
register: TB[1:0], OIE and OIF.
When the RTC interrupt is enabled (OIE bit set),
the ST7 enters ACTIVE-HALT mode when the
HALT instruction is executed. See Section 11.4
for more details.
Figure 30. Main Clock Controller (MCC/RTC) Block Diagram
DIV 2, 4, 8, 16
MCC/RTC INTERRUPT
DIV 2
SMS
CP1 CP0
TB1 TB0
OIE
OIF
CPU CLOCK
MISCR1
RTC
COUNTER
TO CPU AND
PERIPHERALS
fOSC
fCPU
MCO
PORT
FUNCTION
ALTERNATE
MCO
-
0
MCCSR
fOSC/2
相關(guān)PDF資料
PDF描述
ST72C314N2 CMOS Image Sensor
ST72C314N4 CMOS Image Sensor
ST72E311J4D0 8-BIT MICROCONTROLLER
ST72E311N4D0 8-BIT MICROCONTROLLER
ST72E331J4D0 IC-ST7 MICROCONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST72C314J4B1 制造商:STMicroelectronics 功能描述:ST72FLASH 8K - Bulk
ST72C314J4B6 功能描述:8位微控制器 -MCU Flash 16K SPI/SCI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
ST72C314J4T1 制造商:STMicroelectronics 功能描述:ST72FLASH 8K - Bulk
ST72C314J4T6 功能描述:8位微控制器 -MCU Flash 16K SPI/SCI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
ST72C314J4T6 PROGRAMMED 制造商:STMicroelectronics 功能描述:MCU 8-bit ST7 CISC 16KB Flash 3.3V/5V 44-Pin TQFP Tray
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