參數(shù)資料
型號(hào)： MC9SDG256BVFUR2
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP80
封裝： 14 X 14 MM, 2.20 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-80
文件頁數(shù)： 11/155頁
文件大?。?/td> 2684K
代理商： MC9SDG256BVFUR2
MC9S12DP256B Device User Guide — V02.14
108
A.5.1.4 Stop Recovery
Out of STOP the controller can be woken up by an external interrupt. A clock quality check as after POR
is performed before releasing the clocks to the system.
A.5.1.5 Pseudo Stop and Wait Recovery
The recovery from Pseudo STOP and Wait are essentially the same since the oscillator was not stopped in
both modes. The controller can be woken up by internal or external interrupts. After twrs the CPU starts
fetching the interrupt vector.
A.5.2 Oscillator
The device features an internal Colpitts oscillator. By asserting the XCLKS input during reset this
oscillator can be bypassed allowing the input of a square wave. Before asserting the oscillator to the
internal system clocks the quality of the oscillation is checked for each start from either power-on, STOP
or oscillator fail. tCQOUT specifies the maximum time before switching to the internal self clock mode after
POR or STOP if a proper oscillation is not detected. The quality check also determines the minimum
oscillator start-up time tUPOSC. The device also features a clock monitor. A Clock Monitor Failure is
asserted if the frequency of the incoming clock signal is below the Assert Frequency fCMFA.
Table A-15 Oscillator Characteristics
Conditions are shown in Table A-4 unless otherwise noted
Num C
Rating
Symbol
Min
Typ
Max
Unit
1
C Crystal oscillator range
fOSC
0.5
16
MHz
2
P Startup Current
iOSC
100
A
3
C Oscillator start-up time
tUPOSC
81
NOTES:
1. fosc = 4MHz, C = 22pF.
1002
2. Maximum value is for extreme cases using high Q, low frequency crystals
ms
4
D Clock Quality check time-out
tCQOUT
0.45
2.5
s
5
P Clock Monitor Failure Assert Frequency
fCMFA
50
100
200
KHz
6P External square wave input frequency3
3. XCLKS =0 during reset
fEXT
0.5
50
MHz
7
D External square wave pulse width low
tEXTL
9.5
ns
8
D External square wave pulse width high
tEXTH
9.5
ns
9
D External square wave rise time
tEXTR
1ns
10
D External square wave fall time
tEXTF
1ns
11
D Input Capacitance (EXTAL, XTAL pins)
CIN
9pF
12
C
DC Operating Bias in Colpitts Conguration on
EXTAL Pin
VDCBIAS
1.1
V
相關(guān)PDF資料
PDF描述
MC9SDG256BMFUR2 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP80
MC9S12DT128VFU 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP80
MC9S12DT256CVPV 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP112
MC9S12DJ256BCFU 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP80
MC9S12DG256BMPV 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP112
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC9SDG256CCPVR2 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC9SDJ128BCFUR2 制造商:FREESCALE-SEMI 功能描述: 制造商:Freescale Semiconductor 功能描述: 制造商:Motorola Inc 功能描述:
MC9SDT128BMPVR2 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Freescale Semiconductor 功能描述:
MC9SDT256BCPVR2 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC9SXDP512VPVR2 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Freescale Semiconductor 功能描述:
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(hào)，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(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。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

我的聯(lián)系方式

*
*
*