參數(shù)資料
型號(hào)： M44C092-V
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20
封裝： SSO-20
文件頁(yè)數(shù)： 9/80頁(yè)
文件大?。?/td> 609K
代理商： M44C092-V
M44C092–V
M44C092–V
Rev. A2, 08-Nov-01
17 (80)
The clock module generates two output clocks. One is the
system clock (SYSCL) and the other the periphery
(SUBCL). The SYSCL can supply the core and the
peripherals and the SUBCL can supply only the
peripherals with clocks. The modes for clock sources are
programmable with the OS1-bit and OS0-bit in the SC-
register and the CCS-bit in the CM-register.
2.5.2
Oscillator Circuits and External
Clock Input Stage
The M44C092–V / M44C092–V series consists of four
different internal oscillators: two RC-oscillators, one
4-MHz crystal oscillator, one 32-kHz crystal oscillator
and one external clock input stage.
RC-Oscillator 1 Fully Integrated
For timing insensitive applications, it is possible to use
the fully integrated RC oscillator 1. It operates without
any external components and saves additional costs. The
RC–oscillator 1 center frequency tolerance is better than
±50% over the full temperature and voltage range. The
basic center frequency of the RC-oscillator 1 is
fO
[3.8 MHz The RC oscillator 1 is selected by default
after power–on reset.
RC
oscillator 1
RcOut1
Stop
Control
RcOut1
Osc–Stop
13758
Figure 15. RC-oscillator 1
External Input Clock
The OSC1 can be driven by an external clock source
provided it meets the specified duty cycle, rise and fall
times and input levels. Additionally the external clock
stage contains a supervisory circuit for the input clock.
The supervisor function is controlled via the OS1,
OS0-bit in the SC–register and the CCS–bit in the CM-
register. If the external input clock is missing for more
than 1 ms and CCS = 0 is set in the CM-register, the
supervisory circuit generates a hardware reset..
Ext. input clock
ExOut
Stop
Ext.
Clock
RcOut1
Osc–Stop
13759
ExIn
CCS
Res
OSC1
OSC2
Clock monitor
Figure 16. External input clock
OS1
OS0
CCS
Supervisor Reset Output
(Res)
1
1
0
enable
1
1
1
disable
x
0
x
disable
RC-Oscillator 2 with External Trimming
Resistor
The RC-oscillator 2 is a high resolution trimmable
oscillator whereby the oscillator frequency can be
trimmed with an external resistor between OSC1 and
VDD. In this configuration, the RC-oscillator 2 frequency
can be maintained stable to within a tolerance of
± 10%
over the full operating temperature and a voltage range
VDD from 2.5 V to 6.0 V.
For example: An output frequency at the RC-oscillator 2
of 2 MHz, can be obtained by connecting a resistor
Rext = 360 k
(see figures 17).
RC
oscillator 2
RcOut2
Stop
RcOut2
Osc–Stop
13760
R
Trim
OSC1
OSC2
R
ext
V
DD
Figure 17. RC-oscillator 2
4-MHz Oscillator
The M44C092–V 4-MHz oscillator options need a crystal
or ceramic resonator connected to the OSC1 and OSC2
pins to establish oscillation. All the necessary oscillator
circuitry, with the exception of the actual crystal,
resonator, C3 and C4 are integrated on-chip.
相關(guān)PDF資料
PDF描述
M48T02-120PC1 0 TIMER(S), REAL TIME CLOCK, PDIP24
M48T08Y-15MH1E REAL TIME CLOCK, PDSO28
M48T08Y-15MH1 0 TIMER(S), REAL TIME CLOCK, PDSO28
M48T08Y-15MH1TR 0 TIMER(S), REAL TIME CLOCK, PDSO28
M48T128V-85CS1 0 TIMER(S), REAL TIME CLOCK, PDSO44
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M44C890 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Low-Current Microcontroller for Wireless Communication
M44C890-H 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Low-Current Microcontroller for Wireless Communication
M44S05K4F1 功能描述:汽車連接器 MX44 Terminals RoHS:否 制造商:Amphenol SINE Systems 產(chǎn)品:Contacts 系列:ATP 位置數(shù)量: 型式:Female 安裝風(fēng)格: 端接類型: 觸點(diǎn)電鍍:Nickel
M44T332538880MHZ 制造商:MEC 功能描述:
M44T3338880MHZ 制造商:MEC 功能描述:
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*