參數(shù)資料
型號: MPC8343ECZQAGDX
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 400 MHz, MICROPROCESSOR, PBGA620
封裝: 29 X 29 MM, 2.46 MM HEIGHT, 1 MM PITCH, PLASTIC, BGA-620
文件頁數(shù): 90/92頁
文件大?。?/td> 987K
代理商: MPC8343ECZQAGDX
MPC8343E PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 6
90
Freescale Semiconductor
Electrical Characteristics
21.1.3
Output Driver Characteristics
Table 57 provides information on the characteristics of the output driver strengths. The values are
preliminary estimates.
21.2
Power Sequencing
MPC8343E does not require the core supply voltage and IO supply voltages to be applied in any particular
order. Note that during the power ramp up, before the power supplies are stable, there might be a period
of time that IO pins are actively driven. After the power is stable, as long as PORESET is asserted, most
IO pins are tri-stated. In order to minimize the time that IO pins being actively driven, it is recommended
to apply core voltage before IO voltage and assert PORESET before the power supplies fully ramp up.
Table 57. Output Drive Capability
Driver Type
Output Impedance
(
)
Supply
Voltage
Local bus interface utilities signals
42
OVDD = 3.3 V
PCI signals (not including PCI output clocks)
25
PCI output clocks (including PCI_SYNC_OUT)
42
DDR signal
20
GVDD = 2.5 V
TSEC/10/100 signals
42
LVDD = 2.5/3.3 V
DUART, system control, I2C, JTAG
42
OVDD = 3.3 V
GPIO signals
42
OVDD = 3.3 V,
LVDD = 2.5/3.3 V
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