参数资料
型号: TWR-MPC8309
厂商: Freescale Semiconductor
文件页数: 47/81页
文件大小: 0K
描述: TOWER SYSTEM MODULE MPC8309
设计资源: TWR-MPC8309 Schematic
标准包装: 1
系列: PowerQUICC II™ PRO
类型: MPU
适用于相关产品: Freescale 电源塔系统
所含物品: 板,线缆
SPI
Table 51. SPI DC electrical characteristics
Characteristic
Output high voltage
Output low voltage
Output low voltage
Input high voltage
Input low voltage
Input current
Symbol
V OH
V OL
V OL
V IH
V IL
I IN
Condition
I OH = –6.0 mA
I OL = 6.0 mA
I OL = 3.2 mA
0 V ≤ V IN ≤ OV DD
Min
2.4
2.0
–0.3
Max
0.5
0.4
OV DD + 0.3
0.8
±5
Unit
V
V
V
V
V
μ A
20.2
SPI AC timing specifications
The following table and provide the SPI input and output AC timing specifications.
Table 52. SPI AC timing specifications 1
Characteristic
SPI outputs—Master mode (internal clock) delay
SPI outputs—Slave mode (external clock) delay
SPI inputs—Master mode (internal clock) input setup time
SPI inputs—Master mode (internal clock) input hold time
SPI inputs—Slave mode (external clock) input setup time
SPI inputs—Slave mode (external clock) input hold time
Symbol 2
t NIKHOV
t NEKHOV
t NIIVKH
t NIIXKH
t NEIVKH
t NEIXKH
Min
0.5
2
6
0
4
2
Max
6
8
Unit
ns
ns
ns
ns
ns
ns
Notes:
1. Output specifications are measured from the 50% level of the rising edge of SPICLK to the 50% level of the signal. Timings
are measured at the pin.
2. 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, t NIKHOV symbolizes the NMSI
outputs internal timing (NI) for the time t SPI memory clock reference (K) goes from the high state (H) until outputs (O) are
valid (V).
3. All units of output delay must be enabled for 8309_output_port spimosi_lpgl0(SPI Master mode)
4. Delay units must not be enabled for Slave mode.
The following figure provides the AC test load for the SPI.
Output
Z 0 = 50 Ω
R L = 50 Ω
OV DD /2
Figure 36. SPI AC test load
Figure 37 and Figure 38 represent the AC timing from Table 52 . 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.
MPC8309 PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 3
Freescale Semiconductor
47
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