參數(shù)資料
型號: MCIMX27LMOP4A
廠商: Freescale Semiconductor
文件頁數(shù): 104/152頁
文件大?。?/td> 0K
描述: IC MPU I.MX27 IN 19X19 473MAPBGA
標(biāo)準(zhǔn)包裝: 84
系列: i.MX27
核心處理器: ARM9
芯體尺寸: 32-位
速度: 400MHz
連通性: 1 線,CAN,EBI/EMI,以太網(wǎng),I²C,MMC,智能卡,SPI,SSI,UART/USART,USB OTG
外圍設(shè)備: DMA,LCD,POR,PWM,WDT
程序存儲器類型: ROMless
RAM 容量: 45K x 8
電壓 - 電源 (Vcc/Vdd): 1.38 V ~ 1.52 V
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 473-LFBGA
包裝: 托盤
i.MX27 and i.MX27L Data Sheet, Rev. 1.8
Freescale Semiconductor
55
Electrical Characteristics
Table 23. CSPI Interface Timing Parameters
ID
Num
Parameter Description
Symbol
Maximum
Units
t1
CSPI master SCLK cycle time
tclko
45.12
-
ns
t2
CSPI master SCLK high time
tclkoH
22.65
ns
t3
CSPI master SCLK low time
tclkoL
22.47
ns
t1’
CSPI slave SCLK cycle time
tclki
60.2
ns
t2’
CSPI slave SCLK high time
tclkiH
30.1
ns
t3’
CSPI slave SCLK low time
tclkiL
30.1
ns
t4
CSPI SCLK transition time
tpr
1
1 The output SCLK transition time is tested with 25 pF drive.
2.6
8.5
ns
t5
SSn output pulse width
tWsso
2Tsclk
2 +T
wait
3
2 T
sclk = CSPI clock period
3 T
wait = Wait time as per the Sample Period Control Register value.
——
t5’
SSn input pulse width
tWssi
Tper
4
4 T
per = CSPI reference baud rate clock period (PERCLK2)
——
t6
SSn output asserted to first SCLK edge (SS output
setup time)
tSsso
3Tsclk
——
t6’
SSn input asserted to first SCLK edge (SS input
setup time)
tSssi
Tper + 20 ns
t7
CSPI master: Last SCLK edge to SSn deasserted
(SS output hold time)
tHsso
2Tsclk
——
t7’
CSPI slave: Last SCLK edge to SSn deasserted
(SS input hold time)
tHssi
30
ns
t8
CSPI master: CSPI1_RDY low to SSn asserted
(CSPI1_RDY setup time)
tSrdy
2Tper
5Tper
t9
CSPI master: SSn deasserted to CSPI1_RDY low
tHrdy
0—
ns
t10
Output data setup time
tSdatao
(tclkoL or tclkoH or
tclkiL or tclkiH) -
Tipg
5
5 T
ipg = CSPI main clock IPG_CLOCK period
——
t11
Output data hold time
tHdatao
tclkoL or tclkoH or
tclkiL or tclkiH
——
t12
Input data setup time
tSdatai
Tipg + 0.5
ns
t13
Input data hold time
tHdatai
5—
ns
Note:
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