參數(shù)資料
型號： ST6240BQ1
英文描述： 8-BIT MICROCONTROLLER ( MCU ) WITH OTP. ROM. FASTROM. EPROM. LCD DRIVER. EEPROM. A/D CONVERTER AND 80 PINS
中文描述： 8位微控制器（MCU）的與檢察官辦公室。光盤。 FASTROM。存儲器。液晶顯示驅(qū)動程序。 EEPROM中。的A / D轉(zhuǎn)換器和80圖釘
文件頁數(shù)： 16/82頁
文件大?。?/td> 870K
代理商： ST6240BQ1
16/82
ST62T18C/E18C
3 CLOCKS, RESET, INTERRUPTS AND POWER SAVING MODES
3.1 CLOCK SYSTEM
The MCU features a Main Oscillator which can be
driven by an external clock, or used in conjunction
with an AT-cut parallel resonant crystal or a suita-
ble ceramic resonator, or with an external resistor
(R
NET
). In addition, a Low Frequency Auxiliary Os-
cillator (LFAO) can be switched in for security rea-
sons, to reduce power consumption, or to offer the
benefits of a back-up clock system.
The Oscillator Safeguard (OSG) option filters
spikes from the oscillator lines, provides access to
the LFAO to provide a backup oscillator in the
event of main oscillator failure and also automati-
cally limits the internal clock frequency (f
INT
) as a
function of V
DD
, in order to guarantee correct oper-
ation. These functions are illustrated in
Figure 9
,
Figure 10
,
Figure 11
and
Figure 12
.
Figure 8
illustrates various possible oscillator con-
figurations using an external crystal or ceramic res-
onator, an external clock input, an external resistor
(R
NET
), or the lowest cost solution using only the
LFAO. C
L1
an C
L2
should have a capacitance in the
range 12 tST6_CLK1o 22 pF for an oscillator fre-
quency in the 4-8 MHz range.
The internal MCU clock frequency (f
INT
) is divided
by 12 to drive the Timer, the A/D converter and the
Watchdog timer, and by 13 to drive the CPU core,
as may be seen in
Figure 11
.
With an 8MHz oscillator frequency, the fastest ma-
chine cycle is therefore 1.625μs.
A machine cycle is the smallest unit of time needed
to execute any operation (for instance, to increment
the Program Counter). An instruction may require
two, four, or five machine cycles for execution.
3.1.1 Main Oscillator
The oscillator configuration may be specified by se-
lecting the appropriate option. When the CRYSTAL/
RESONATOR option s selected, t must be used with
a quartz crystal, a ceramic resonator or an external
signal provided on he OSCin pin. When he RC NET-
WORK option is selected, the system clock is gen-
erated by an external resistor.
The main oscillator can be turned off (when the
OSG ENABLED option is selected) by setting the
OSCOFF bit of the ADC Control Register. The
Low Frequency Auxiliary Oscillator is automatical-
ly started.
Figure 8. Oscillator Configurations
INTEGRATED CLOCK
CRYSTAL/RESONATOR option
OSG ENABLED option
OSC
in
OSC
out
C
L1n
C
L2
ST6xxx
CRYSTAL/RESONATOR CLOCK
CRYSTAL/RESONATOR option
OSC
in
OSC
out
ST6xxx
EXTERNAL CLOCK
CRYSTAL/RESONATOR option
NC
OSC
in
OSC
out
ST6xxx
NC
OSC
in
OSC
out
R
NET
ST6xxx
RC NETWORK
RC NETWORK option
NC
16
相關(guān)PDF資料
PDF描述
ST6240BQ6 8-BIT MICROCONTROLLER ( MCU ) WITH OTP. ROM. FASTROM. EPROM. LCD DRIVER. EEPROM. A/D CONVERTER AND 80 PINS
ST62E45G1 8-BIT MICROCONTROLLER
ST62E60BF1 8-BIT MICROCONTROLLER
ST62T01CM6 MICROCONTROLLER|8-BIT|ST6200 CPU|CMOS|SOP|16PIN|PLASTIC
ST62T01CN3 MICROCONTROLLER|8-BIT|ST6200 CPU|CMOS|SSOP|16PIN|PLASTIC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST6240BQ1/XXX 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
ST6240BQ6 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT MICROCONTROLLER ( MCU ) WITH OTP. ROM. FASTROM. EPROM. LCD DRIVER. EEPROM. A/D CONVERTER AND 80 PINS
ST6240BQ6/XXX 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
ST6240-P/QFP 功能描述:插座和適配器 ST62 P/QFP Adaptor RoHS:否 制造商:Silicon Labs 產(chǎn)品:Adapter 用于:EM35x
ST6240Q1/XX 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*