参数资料
型号: MCIMX258CJM4
厂商: Freescale Semiconductor
文件页数: 122/153页
文件大小: 0K
描述: MPU IMX25 IND 400-MAPBGA
特色产品: MCIMX25 Applications Processors
标准包装: 90
系列: i.MX25
核心处理器: ARM9
芯体尺寸: 32-位
速度: 400MHz
连通性: 1 线,CAN,EBI/EMI,以太网,I²C,MMC,智能卡,SPI,SSI,UART/USART,USB OTG
外围设备: DMA,I²S,LCD,POR,PWM,WDT
输入/输出数: 128
程序存储器类型: 外部程序存储器
RAM 容量: 144K x 8
电压 - 电源 (Vcc/Vdd): 1.15 V ~ 1.52 V
数据转换器: A/D 3x12b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 400-LFBGA
包装: 托盘
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 10
70
Freescale Semiconductor
NOTE
The test condition load capacitance was 25 pF. Recommended drive
strength for all controls, address, and BCLK is maximum drive.
Recommended drive strength for all controls, address and BCLK is
maximum drive.
WE8
Clock rise/fall to RW valid
8
12
ns
WE9
Clock rise/fall to RW invalid
3
8
ns
WE10
Clock rise/fall to OE valid
7
12
ns
WE11
Clock rise/fall to OE invalid
3.6
5.5
ns
WE12
Clock rise/fall to EB[y] valid
6
11.5
ns
WE13
Clock rise/fall to EB[y] invalid
6
10
ns
WE14
Clock rise/fall to LBA valid
17.5
20
ns
WE15
Clock rise/fall to LBA invalid
0
1
ns
WE16
Clock rise/fall to output data valid
5
10
ns
WE17
Clock rise to output data invalid
0
2.5
ns
WE18
Input data valid to clock rise, FCE=1
1
ns
WE19
Input Data Valid to Clock rise, FCE=0 (in the case there is ECB asserted during
access)
1/2 BCLK
+2.63
—ns
Input Data Valid to Clock rise, FCE=0 (in the case there is NO ECB asserted
during access)
6.9
ns
WE20
Clock rise to input data invalid, FCE=1
1
ns
WE21
Clock rise to input data invalid, FCE=0
2.4
ns
WE22
ECB setup time, FCE=1
5
ns
WE23
ECB setup time, FCE=0
7.2
ns
WE24
ECB hold time, FCE=1
5
ns
WE25
ECB hold time, FCE=0
0
ns
WE26
DTACK setup time
5.4
ns
WE27
DTACK hold time
–3.2
ns
1 High is defined as 80% of signal value; low is defined as 20% of signal value.
2 BCLK parameters are being measured from the 50% point. For example, high is defined as 50% of signal value and low is
defined as 50% as signal value.
Table 56. WEIM Bus Timing Parameters1 (continued)
ID
Parameter
Min.
Max.
Unit
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