参数资料
型号: MPC8379E-RDB
厂商: Freescale Semiconductor
文件页数: 82/117页
文件大小: 0K
描述: BOARD REFERENCE FOR MPC837
标准包装: 1
系列: PowerQUICC II™ PRO
类型: MPU
适用于相关产品: MPC8379
所含物品:
MPC8379E PowerQUICC II Pro Processor Hardware Specifications, Rev. 8
Freescale Semiconductor
67
19.1
SPI DC Electrical Characteristics
This table provides the DC electrical characteristics for the device SPI.
19.2
SPI AC Timing Specifications
This table provides the SPI input and output AC timing specifications.
This figure provides the AC test load for the SPI.
Figure 45. SPI AC Test Load
These figures represent the AC timing from Table 67. Note that although the specifications generally
reference the rising edge of the clock, these AC timing diagrams also apply when the falling edge is the
active edge.
Table 66. SPI DC Electrical Characteristics
Parameter
Condition
Symbol
Min
Max
Unit
Input high voltage
VIH
2.0
OVDD + 0.3
V
Input low voltage
VIL
–0.3
0.8
V
Input current
IIN
—± 30
μA
Output high voltage
IOH = –8.0 mA
VOH
2.4
V
Output low voltage
IOL = 8.0 mA
VOL
—0.5
V
Output low voltage
IOL = 3.2 mA
VOL
—0.4
V
Table 67. SPI AC Timing Specifications
Parameter
Symbol1
Min
Max
Unit
SPI outputs—Master mode (internal clock) delay
tNIKHOV
0.5
6
ns
SPI outputs—Slave mode (external clock) delay
tNEKHOV
28
ns
SPI inputs—Master mode (internal clock) input setup time
tNIIVKH
4—
ns
SPI inputs—Master mode (internal clock) input hold time
tNIIXKH
0—
ns
SPI inputs—Slave mode (external clock) input setup time
tNEIVKH
4—
ns
SPI inputs—Slave mode (external clock) input hold time
tNEIXKH
2—
ns
Notes:
1. The symbols used for timing specifications follow the pattern of t(first two letters of functional block)(signal)(state) (reference)(state) for
inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tNIKHOV symbolizes the internal
timing (NI) for the time SPICLK clock reference (K) goes to the high state (H) until outputs (O) are invalid (X).
2. 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. The maximum SPICLK input frequency is 66.666 MHz.
Output
Z0 = 50 Ω
OVDD/2
RL = 50 Ω
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