参数资料
型号: MCIMX31LDVKN5D
厂商: Freescale Semiconductor
文件页数: 49/118页
文件大小: 0K
描述: IC MPU I/MX31L CONSUMR 457MAPBGA
标准包装: 152
系列: i.MX31
核心处理器: ARM11
芯体尺寸: 32-位
速度: 532MHz
连通性: 1 线,ATA,EBI/EMI,FIR,I²C,MMC/SD,PCMCIA,SIM,SPI,SSI,UART/USART,USB,USB OTG
外围设备: DMA,LCD,POR,PWM,WDT
程序存储器类型: ROMless
RAM 容量: 16K x 8
电压 - 电源 (Vcc/Vdd): 1.22 V ~ 3.3 V
振荡器型: 外部
工作温度: 0°C ~ 70°C
封装/外壳: 457-LFBGA
包装: 托盘
MCIMX31/MCIMX31L Technical Data, Rev. 4.3
36
Freescale Semiconductor
Electrical Characteristics
4.3.9
EMI Electrical Specifications
This section provides electrical parametrics and timings for EMI module.
4.3.9.1
NAND Flash Controller Interface (NFC)
The NFC supports normal timing mode, using two flash clock cycles for one access of RE and WE. AC
timings are provided as multiplications of the clock cycle and fixed delay. Figure 22, Figure 23, Figure 24,
and Figure 25 depict the relative timing requirements among different signals of the NFC at module level,
for normal mode, and Table 31 lists the timing parameters.
Figure 22. Command Latch Cycle Timing DIagram
Phase lock time
100
s
In addition to the frequency
Maximum allowed PLL supply voltage ripple
25
mV
Fmodulation < 50 kHz
Maximum allowed PLL supply voltage ripple
20
mV
50 kHz < Fmodulation < 300 kHz
Maximum allowed PLL supply voltage ripple
25
mV
Fmodulation > 300 kHz
PLL output clock phase jitter
5.2
ns
Measured on CLKO pin
PLL output clock period jitter
420
ps
Measured on CLKO pin
1 The user or board designer must take into account that the use of a frequency other than 26 MHz would require adjustment to
the DPTC–DVFS table, which is incorporated into operating system code.
2 The PLL reference frequency must be ≤ 35 MHz. Therefore, for frequencies between 35 MHz and 70 MHz, program the
predivider to divide by 2 or more. If the CKIH frequency is above 70 MHz, program the predivider to 3 or more. For PD bit
description, see the reference manual.
Table 30. DPLL Specifications (continued)
Parameter
Min
Typ
Max
Unit
Comments
NFCLE
NFCE
NFWE
NFALE
NFIO[7:0]
Command
NF9
NF8
NF1
NF2
NF5
NF3
NF4
NF6
NF7
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