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参数资料
| 型号： | MCF52256CAG66 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, FLASH, 66 MHz, RISC MICROCONTROLLER, PQFP144 |
| 封装： | 20 X 20 MM, ROHS COMPLIANT, LQFP-144 |
| 文件页数： | 25/46页 |
| 文件大小： | 560K |
| 代理商： | MCF52256CAG66 |
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MCF52259 ColdFire Microcontroller, Rev. 4
Electrical Characteristics
Freescale Semiconductor
31
2.8
Clock Source Electrical Specifications
Table 14. Oscillator and PLL Specifications
(VDD and VDDPLL = 3.0 to 3.6 V, VSS = VSSPLL = 0 V)
Characteristic
Symbol
Min
Max
Unit
Clock Source Frequency Range of EXTAL Frequency Range
Crystal
External1
1 In external clock mode, it is possible to run the chip directly from an external clock source without enabling the PLL.
fcrystal
fext
12
0
25.02
66.67 or 80
2 This value has been updated.
MHz
PLL reference frequency range
fref_pll
210.0
MHz
System frequency 3
External clock mode
On-chip PLL frequency
3 All internal registers retain data at 0 Hz.
fsys
0
fref / 32
66.67 or 804
66.67 or 804
4 Depending on packaging; see the orderable part number summary.
MHz
Loss of reference frequency 5, 7
5 Loss of Reference Frequency is the reference frequency detected internally, which transitions the PLL into self clocked mode.
fLOR
100
1000
kHz
Self clocked mode frequency 6
6 Self clocked mode frequency is the frequency at which the PLL operates when the reference frequency falls below f
LOR with
default MFD/RFD settings.
fSCM
15
MHz
Crystal start-up time 7, 8
7 This parameter is characterized before qualification rather than 100% tested.
8 Proper PC board layout procedures must be followed to achieve specifications.
tcst
—0.1
ms
EXTAL input high voltage
External reference
VIHEXT
2.0
3.02
V
EXTAL input low voltage
External reference
VILEXT
VSS
0.8
V
PLL lock time4,9
9 This specification applies to the period required for the PLL to relock after changing the MFD frequency control bits in the
synthesizer control register (SYNCR).
tlpll
—500
s
Duty cycle of reference 4
tdc
40
60
% fref
Frequency un-LOCK range
fUL
–1.5
1.5
% fref
Frequency LOCK range
fLCK
–0.75
0.75
% fref
CLKOUT period jitter 4, 5, 10 ,11, measured at fSYS Max
Peak-to-peak (clock edge to clock edge)
Long term (averaged over 2 ms interval)
10 Jitter is the average deviation from the programmed frequency measured over the specified interval at maximum f
sys.
Measurements are made with the device powered by filtered supplies and clocked by a stable external clock signal. Noise
injected into the PLL circuitry via VDDPLL and VSSPLL and variation in crystal oscillator frequency increase the Cjitter percentage
for a given interval.
11 Based on slow system clock of 40 MHz measured at f
sys max.
Cjitter
—
10
.01
% fsys
On-chip oscillator frequency
foco
7.84
8.16
MHz
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCF52256CAG66 | 制造商:Freescale Semiconductor 功能描述:IC 32BIT MCU COLDFIRE/68K 66MHZ LQFP-144 |
| MCF52256CVN66 | 功能描述:32位微控制器 - MCU KIRN3 144MAPBGA RoHS:否 制造商:Texas Instruments 核心:C28x 处理器系列:TMS320F28x 数据总线宽度:32 bit 最大时钟频率:90 MHz 程序存储器大小:64 KB 数据 RAM 大小:26 KB 片上 ADC:Yes 工作电源电压:2.97 V to 3.63 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:LQFP-80 安装风格:SMD/SMT |
| MCF52256CVN66 | 制造商:Freescale Semiconductor 功能描述:32-bit Microcontroller IC |
| MCF52256CVN66J | 制造商:Freescale Semiconductor 功能描述:32-BIT MCF5225X COLDFIRE RISC 256KB FLASH 3.3V 144-PIN MA-B - Bulk |
| MCF52256VN80 | 制造商:Freescale Semiconductor 功能描述:MCU 32BIT V2 RISC 256KB FLASH 3.3V 144MAPBGA - Trays 制造商:Freescale Semiconductor 功能描述:MCU 32BIT COLDFIRE V2 144MAPBGA 制造商:Freescale Semiconductor 功能描述:32-bit Microcontroller IC 制造商:Freescale Semiconductor 功能描述:MCF5225X Series 32 Bit 80 Mhz Microcontroller - MAPBGA-144 |
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