参数资料
型号: MCIMX351AVM4BR2
厂商: Freescale Semiconductor
文件页数: 80/147页
文件大小: 0K
描述: IC MPU I.MX35 400MAPBGA
标准包装: 1,000
系列: i.MX35
核心处理器: ARM11
芯体尺寸: 32-位
速度: 400MHz
连通性: 1 线,CAN,EBI/EMI,以太网,I²C,MMC,SPI,SSI,UART/USART,USB OTG
外围设备: DMA,I²S,LCD,POR,PWM,WDT
输入/输出数: 96
程序存储器类型: ROMless
RAM 容量: 128K x 8
电压 - 电源 (Vcc/Vdd): 1.22 V ~ 1.47 V
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 400-LFBGA
包装: 带卷 (TR)
i.MX35 Applications Processors for Automotive Products, Rev. 10
Freescale Semiconductor
38
NOTE
Test conditions: load capacitance, 25 pF. Recommended drive strength for
all controls, address, and BCLK is set to maximum drive.
Table 33. WEIM Bus Timing Parameters1
1 “High” is defined as 80% of signal value, and “low” is defined as 20% of signal value.
ID
Parameter
Min.
Max.
Unit
WE1
BCLK cycle time2
2 BCLK parameters are measured from the 50% point. For example, “high” is defined as 50% of signal value and “low” is defined
as 50% of signal value.
14.5
ns
WE2
BCLK low-level width2
7—
ns
WE3
BCLK high-level width2
7—
ns
WE4
Address valid to Clock rise/fall
15
21
ns
WE5
Clock rise/fall to address invalid
22
25
ns
WE6
Clock rise/fall to CSx_B valid
15
19
ns
WE7
Clock rise/fall to CSx_B invalid
3.6
5
ns
WE8
Clock rise/fall to RW_B valid
8
12
ns
WE9
Clock rise/fall to RW_B invalid
3
8
ns
WE10
Clock rise/fall to OE_B valid
7
12
ns
WE11
Clock rise/fall to OE_B invalid
3.8
5.5
ns
WE12
Clock rise/fall to EBy_B valid
6
11.5
ns
WE13
Clock rise/fall to EBy_B invalid
6
10
ns
WE14
Clock rise/fall to LBA_B valid
17.5
20
ns
WE15
Clock rise/fall to LBA_B 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 rise3
3 Parameters W18, W20, W22, and W24 are tested when FCE=1. i.MX35 does not support FCE=0.
1—
ns
WE19
Input Data Valid to Clock rise, FCE=0 (in the case there is ECB_B asserted
during access)
(BCLK/2)
+ 3.01
—ns
WE19
Input Data Valid to Clock rise, FCE=0 (in the case there is NO ECB_B
asserted during access)
6.9
ns
WE20
Clock rise to Input Data invalid3
1—
ns
WE22
ECB_B setup time3
5—
ns
WE24
ECB_B hold time3
0—
ns
WE26
DTACK_B setup time
5.4
ns
WE27
DTACK_B hold time
–3.2
ns
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