參數(shù)資料
型號: KMC7448VU1400NC
廠商: Freescale Semiconductor
文件頁數(shù): 2/60頁
文件大?。?/td> 0K
描述: IC MPU 128BIT 1400MHZ 360-FCCBGA
標準包裝: 1
系列: MPC74xx
處理器類型: 32-位 MPC74xx PowerPC
速度: 1.4GHz
電壓: 1.15V
安裝類型: 表面貼裝
封裝/外殼: 360-CBGA,F(xiàn)CCBGA
供應(yīng)商設(shè)備封裝: 360-FCCBGA(25x25)
包裝: 托盤
MPC7448 RISC Microprocessor Hardware Specifications, Rev. 4
10
Freescale Semiconductor
Electrical and Thermal Characteristics
Figure 2 shows the undershoot and overshoot voltage on the MPC7448.
Figure 2. Overshoot/Undershoot Voltage
The MPC7448 provides several I/O voltages to support both compatibility with existing systems and
migration to future systems. The MPC7448 core voltage must always be provided at the nominal voltage
(see Table 4). The input voltage threshold for each bus is selected by sampling the state of the voltage
select pins at the negation of the signal HRESET. The output voltage will swing from GND to the
maximum voltage applied to the OVDD power pins. Table 3 provides the input threshold voltage settings.
Because these settings may change in future products, it is recommended that BVSEL[0:1] be configured
using resistor options, jumpers, or some other flexible means, with the capability to reconfigure the
termination of this signal in the future, if necessary.
Table 3. Input Threshold Voltage Setting
BVSEL0
BVSEL1
I/O Voltage Mode1
Notes
0
1.8 V
2, 3
0
1
2.5 V
2, 4
1
0
1.5 V
2
1
2.5 V
4
Notes:
1. Caution: The I/O voltage mode selected must agree with the OVDD voltages
supplied. See Table 4.
2. If used, pull-down resistors should be less than 250
Ω.
3. The pin configuration used to select 1.8V mode on the MPC7448 is not compatible
with the pin configuration used to select 1.8V mode on the MPC7447A and earlier
devices.
4. The pin configuration used to select 2.5V mode on the MPC7448 is fully compatible
with the pin configuration used to select 2.5V mode on the MPC7447A and earlier
devices.
VIH
GND
GND – 0.3 V
GND – 0.7 V
Not to Exceed 10%
OVDD + 20%
VIL
OVDD
OVDD + 5%
of tSYSCLK
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