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参数资料
| 型号： | MCF51AC256BCPUE |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 27/42页 |
| 文件大小： | 0K |
| 描述： | MCU 32BIT 256K FLASH 64-LQFP |
| 标准包装： | 160 |
| 系列： | MCF51AC |
| 核心处理器： | Coldfire V1 |
| 芯体尺寸： | 32-位 |
| 速度： | 50MHz |
| 连通性： | I²C，SCI，SPI |
| 外围设备： | LVD，PWM，WDT |
| 输入/输出数： | 54 |
| 程序存储器容量： | 256KB（256K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 32K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2.7 V ~ 5.5 V |
| 数据转换器： | A/D 20x12b |
| 振荡器型： | 外部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 64-LQFP |
| 包装： | 托盘 |
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Electrical Characteristics
MCF51AC256 ColdFire Microcontroller Data Sheet, Rev.7
Freescale Semiconductor
33
o
2.11
AC Characteristics
This section describes ac timing characteristics for each peripheral system.
18
D Lock exit frequency tolerance 8
Dunl
4.47
—
5.97
%
19
D Lock time — FLL
tfll_lock
——
tfll_acquire+
1075(1/fint_t)
s
20
D Lock time — PLL
tpll_lock
——
tpll_acquire+
1075(1/fpll_ref)
s
21
D
Loss of external clock minimum frequency —
RANGE = 0
floc_low
(3/5)
f
int
—
kHz
1 Data in Typical column was characterized at 5.0 V, 25
C or is typical recommended value.
2 The resulting bus clock frequency must not exceed the maximum specified bus clock frequency of the device.
3 This specification applies when the FLL reference source or reference divider is changed, trim value changed or changing from
FLL disabled (BLPE, BLPI) to FLL enabled (FEI, FEE, FBE, FBI). If a crystal/resonator is being used as the reference, this
specification assumes it is already running.
4 This specification applies when the PLL VCO divider or reference divider is changed, or changing from PLL disabled (BLPE,
BLPI) to PLL enabled (PBE, PEE). If a crystal/resonator is being used as the reference, this specification assumes it is already
running.
5 Jitter is the average deviation from the programmed frequency measured over the specified interval at maximum f
BUS.
Measurements are made with the device powered by filtered supplies and clocked by a stable external clock signal. Noise
injected into the FLL circuitry via VDD and VSS and variation in crystal oscillator frequency increase the CJitter percentage for
a given interval.
6 625 ns represents 5 time quanta for CAN applications, under worst case conditions of 8 MHz CAN bus clock, 1 Mbps CAN bus
speed, and 8 time quanta per bit for bit time settings. 5 time quanta is the minimum time between a synchronization edge and
the sample point of a bit using 8 time quanta per bit.
7 Below D
lock minimum, the MCG enters lock. Above Dlock maximum, the MCG will not enter lock. But if the MCG is already in
lock, then the MCG may stay in lock.
8 Below D
unl minimum, the MCG will not exit lock if already in lock. Above Dunl maximum, the MCG is guaranteed to exit lock.
Table 16. MCG Frequency Specifications (continued)(Temperature Range = –40 to 105
C Ambient)
Num C
Rating
Symbol
Min
Typical1
Max
Unit
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCF51AC256BVFGE | 制造商:Freescale Semiconductor 功能描述:MCF51AC256BVFGE - Bulk |
| MCF51AC256BVFUE | 功能描述:32位微控制器 - MCU 256KFLASH 32K RAM NO CAN 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 |
| MCF51AC256BVLKE | 功能描述:32位微控制器 - MCU 256KFLASH 32K RAM NO CAN 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 |
| MCF51AC256BVPUE | 功能描述:32位微控制器 - MCU 256KFLASH 32K RAM NO CAN 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 |
| MCF51AG128 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:MCF51AG128 ColdFire Microcontroller |
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