参数资料
型号: KXPC8240LVV200E
厂商: Freescale Semiconductor
文件页数: 7/52页
文件大小: 0K
描述: IC MPU INTEGRATED 250MHZ 352TBGA
标准包装: 2
系列: MPC82xx
处理器类型: 32-位 MPC82xx PowerQUICC II
速度: 200MHz
电压: 2.5V
安装类型: 表面贴装
封装/外壳: 352-LBGA
供应商设备封装: 352-TBGA(35x35)
包装: 托盘
MPC8240 Integrated Processor Hardware Specifications
15
Electrical and Thermal Characteristics
Figure 8. Input-Output Timing Diagram Referenced to SDRAM_SYNC_IN
Figure 9. Input-Output Timing Diagram Referenced to PCI_SYNC_IN
11a
PCI_SYNC_IN (SDRAM_SYNC_IN) to inputs invalid (input hold)
1.0
ns
1, 2, 3
11b
HRST_CPU/HRST_CTRL to mode select inputs invalid (input hold)
0
ns
1, 3, 5
Notes:
1. All memory and related interface input signal specifications are measured from the TTL level (0.8 or 2.0 V) of the
signal in question to the VM = 1.4 V of the rising edge of the memory bus clock, SDRAM_SYNC_IN.
SDRAM_SYNC_IN is the same as PCI_SYNC_IN in 1:1 mode, but is twice the frequency in 2:1 mode
(processor/memory bus clock rising edges occur on every rising and falling edge of PCI_SYNC_IN). See Figure 8.
2. All PCI signals are measured from OVDD/2 of the rising edge of PCI_SYNC_IN to 0.4 × OVDD of the signal in
question for 3.3-V PCI signaling levels. See Figure 9.
3. Input timings are measured at the pin.
4. tCLK is the time of one SDRAM_SYNC_IN clock cycle.
5. All mode select input signals specifications are measured from the TTL level (0.8 or 2.0 V) of the signal in question
to the VM = 1.4 V of the rising edge of the HRST_CPU/HRST_CTRL signal. See Figure 10.
Table 8. Input AC Timing Specifications (continued)
At recommended operating conditions (see Table 2) with LVDD = 3.3 V ± 0.3 V
Num
Characteristic
Min
Max
Unit
Notes
11a
VM
VM = Midpoint Voltage (1.4 V)
MEMORY
10b-d
PCI_SYNC_IN
Inputs/Outputs
13b
14b
VM
SDRAM_SYNC_IN
Shown in 2:1 Mode
Input Timing
Output Timing
12b-d
2.0 V
0.8 V
2.0 V
VM
OVDD ÷ 2
10a
11a
PCI_SYNC_IN
PCI
12a
13a
14a
OVDD ÷ 2
0.4
× OVDD
0.615
× OVDD
0.285
× OVDD
Output Timing
Inputs/Outputs
Input Timing
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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