參數(shù)資料
型號: MPC826XAVR
廠商: Motorola, Inc.
英文描述: Hardware Specifications
中文描述: 硬件規(guī)格
文件頁數(shù): 13/48頁
文件大?。?/td> 662K
代理商: MPC826XAVR
MOTOROLA
MPC826xA (HiP4) Family Hardware Specifications
13
Electrical and Thermal Characteristics
Table 7 lists CPM output characteristics.
Table 8 lists CPM input characteristics.
Note that although the specifications generally reference the rising edge of the clock, the following AC
timing diagrams also apply when the falling edge is the active edge.
Table 6. Output Buffer Impedances
1
1
These are typical values at 65 C. The impedance may vary
by ±25% with process and temperature.
Output Buffers
Typical Impedance (
)
60x bus
40
Local bus
40
Memory controller
40
Parallel I/O
46
PCI
25
Table 7. AC Characteristics for CPM Outputs
1
1
Output specifications are measured from the 50% level of the rising edge of CLKIN to the 50% level of the signal.
Timings are measured at the pin.
Spec Number
Characteristic
Max Delay (ns)
Min Delay (ns)
Max
Min
66 MHz 83 MHz 66 MHz 83 MHz
sp36a
sp37a
FCC outputs—internal clock (NMSI)
6
5.5
1
1
sp36b
sp37b
FCC outputs—external clock (NMSI)
14
12
2
1
sp40
sp41
TDM outputs/SI
25
16
5
4
sp38a
sp39a
SCC/SMC/SPI/I2C outputs—internal clock (NMSI)
19
16
1
0.5
sp38b
sp39b
Ex_SCC/SMC/SPI/I2C outputs—external clock (NMSI)
19
16
2
1
sp42
sp43
TIMER/IDMA outputs
14
11
1
0.5
sp42a
sp43a
PIO outputs
14
11
0.5
0.5
Table 8. AC Characteristics for CPM Inputs
1
1
Input specifications are measured from the 50% level of the signal to the 50% level of the rising edge of CLKIN.
Timings are measured at the pin.
Spec Number
Characteristic
Setup (ns)
Hold (ns)
Max
Min
66 MHz 83 MHz 66 MHz 83 MHz
sp16a
sp17a
FCC inputs—internal clock (NMSI)
10
8
0
0
sp16b
sp17b
FCC inputs—external clock (NMSI)
3
2.5
3
2
sp20
sp21
TDM inputs/SI
15
12
12
10
sp18a
sp19a
SCC/SMC/SPI/I2C inputs—internal clock (NMSI)
20
16
0
0
sp18b
sp19b
SCC/SMC/SPI/I2C inputs—external clock (NMSI)
5
4
5
4
sp22
sp23
PIO/TIMER/IDMA inputs
10
8
3
3
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