參數(shù)資料
型號(hào): MCIMX257DVM4
廠商: Freescale Semiconductor
文件頁數(shù): 35/153頁
文件大小: 0K
描述: IC MPU I.MX25 COMM 400MAPBGA
標(biāo)準(zhǔn)包裝: 90
系列: i.MX25
核心處理器: ARM9
芯體尺寸: 32-位
速度: 400MHz
連通性: 1 線,CAN,EBI/EMI,以太網(wǎng),I²C,MMC,智能卡,SPI,SSI,UART/USART,USB OTG
外圍設(shè)備: DMA,I²S,LCD,POR,PWM,WDT
輸入/輸出數(shù): 128
程序存儲(chǔ)器類型: 外部程序存儲(chǔ)器
RAM 容量: 144K x 8
電壓 - 電源 (Vcc/Vdd): 1.15 V ~ 1.52 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 3x12b
振蕩器型: 外部
工作溫度: -20°C ~ 70°C
封裝/外殼: 400-LFBGA
包裝: 托盤
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 10
Freescale Semiconductor
13
3.1.3
Fusebox Supply Current Parameters
Table 7 lists the fusebox supply current parameters.
3.1.4
Interface Frequency Limits
Table 8 provides information for interface frequency limits.
Table 9 provides the recommended external crystal specifications.
Table 10 provides the recommended external reference clock oscillator specifications (when reference is
used from an external clock source).
Table 7. Fusebox Supply Current Parameters
Parameter
Symbol
Min.
Typ.
Max.
Units
eFuse program current1
Current to program one eFuse bit
The associated VDD_FUSE supply = 3.6 V
1 The current I
program is during program time (tprogram).
Iprogram
26
35
62
mA
eFuse read current2
Current to read an 8-bit eFuse word
2 The current I
read is present for approximately 50 ns of the read access to the 8-bit word.
Iread
12.5
15
mA
Table 8. Interface Frequency Limits
Parameter
Min.
Typ.
Max.
Units
JTAG: TCK Frequency of Operation
DC
5
10
MHz
OSC24M_XTAL Oscillator
24
MHz
OSC32K_XTAL Oscillator
32.768
kHz
Table 9. Recommended External Crystal Specifications
24 MHz
32.768 kHz
Frequency Tolerance
<=
± 30 ppm
<=
± 30 ppm
ESR
< 80
Ω
50 K~60 K
Load Capacitor
8 pF–12 pF
6 pF–8 pF (12 pF–16 pF on each pin)
Shunt Capacitor
< 7 pF
1 pF
Drive Level
> 150 W
> 1 W
Table 10. Recommended External Reference Clock Specifications
24 MHz
32.768 kHz
VOH
min = 0.7* VDD
VOL
max = 0.3* VDD
Frequency Tolerance
= 30 ppm
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