參數(shù)資料
型號: TMS37C136
廠商: Texas Instruments, Inc.
英文描述: Controller Entry Transponder IC
中文描述: 控制器項(xiàng)應(yīng)答器集成電路
文件頁數(shù): 42/48頁
文件大?。?/td> 711K
代理商: TMS37C136
TMS370Cx36
8-BIT MICROCONTROLLER
SPNS039B – JANUARY 1996 – REVISED FEBRUARY 1997
42
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
SPI master mode external timing characteristics and requirements (see Note 11 and Figure 20)
NO.
MIN
MAX
UNIT
38
tc(SPC)M
tw(SPCL)M
tw(SPCH)M
td(SPCL-SIMOV)M
tv(SPCH-SIMO)M
tsu(SOMI-SPCH)M
Cycle time, SPICLK
2tc
tc– 45
tc– 55
– 65
256tc
ns
39
Pulse duration, SPICLK low
0.5tc(SPC)+45
0.5tc(SPC)+45
50
ns
40
Pulse duration, SPICLK high
ns
41
Delay time, SPISIMO valid after SPICLK low (polarity = 1)
ns
42
Valid time, SPISIMO data valid after SPICLK high (polarity =1)
tw(SPCH) – 50
0.25 tc + 150
ns
43
Setup time, SPISOMI to SPICLK high (polarity = 1)
ns
44
tv(SPCH-SOMI)M
Valid time, SPISOMI data valid after SPICLK high
(polarity = 1)
0
ns
NOTE 11: tc = system clock cycle time = 1/SYSCLK
Data Valid
Data Valid
SPISOMI
SPISIMO
SPICLK
44
43
42
41
38
40
39
The diagram is for polarity = 1. SPICLK is inverted when polarity = 0.
Figure 20. SPI Master External Timing
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