参数资料
型号: MCF52221CAF80
厂商: Freescale Semiconductor
文件页数: 31/55页
文件大小: 0K
描述: IC MCU 128K FLASH 80MHZ 100-LQFP
标准包装: 90
系列: MCF5222x
核心处理器: Coldfire V2
芯体尺寸: 32-位
速度: 80MHz
连通性: I²C,SPI,UART/USART,USB OTG
外围设备: DMA,LVD,POR,PWM,WDT
输入/输出数: 56
程序存储器容量: 128KB(128K x 8)
程序存储器类型: 闪存
RAM 容量: 16K x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 3.6 V
数据转换器: A/D 8x12b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 100-LQFP
包装: 托盘
配用: M52221DEMO-ND - BOARD DEMO FOR MCF52221
MCF52223 ColdFire Microcontroller, Rev. 3
Electrical Characteristics
Freescale Semiconductor
37
Figure 8 shows timing for the values in Table 33 and Table 34.
Figure 8. I2C Input/Output Timings
2.12
Analog-to-Digital Converter (ADC) Parameters
Table 35 lists specifications for the analog-to-digital converter.
1 Output numbers depend on the value programmed into the IFDR; an IFDR programmed with the
maximum frequency (IFDR = 0x20) results in minimum output timings as shown in Table 34. The I2C
interface is designed to scale the actual data transition time to move it to the middle of the SCL low
period. The actual position is affected by the prescale and division values programmed into the IFDR;
however, the numbers given in Table 34 are minimum values.
2 Because SCL and SDA are open-collector-type outputs, which the processor can only actively drive
low, the time SCL or SDA take to reach a high level depends on external signal capacitance and pull-up
resistor values.
3 Specified at a nominal 50-pF load.
Table 35. ADC Parameters1
Name
Characteristic
Min
Typical
Max
Unit
VREFL
Low reference voltage
VSS
—VREFH
V
VREFH
High reference voltage
VREFL
—VDDA
V
VDDA
ADC analog supply voltage
3.0
3.3
3.6
V
VADIN
Input voltages
VREFL
—VREFH
V
RES
Resolution
12
12
Bits
INL
Integral non-linearity (full input signal range)2
2.5
3LSB3
INL
Integral non-linearity (10% to 90% input signal range)4
2.5
3LSB
DNL
Differential non-linearity
–1 < DNL <
1<1LSB
Monotonicity
GUARANTEED
fADIC
ADC internal clock
0.1
5.0
MHz
RAD
Conversion range
VREFL
—VREFH
V
tADPU
ADC power-up time5
—613
tAIC cycles
6
tREC
Recovery from auto standby
0
1
tAIC cycles
tADC
Conversion time
6
tAIC cycles
tADS
Sample time
1
tAIC cycles
CADI
Input capacitance
—pF
I2
I6
I1
I4
I7
I8
I9
I5
I3
SCL
SDA
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