參數(shù)資料
型號(hào): LH7A400N0G000B5
廠商: NXP Semiconductors N.V.
元件分類: 數(shù)學(xué)處理器
英文描述: 32-Bit System-on-Chip
封裝: LH7A400N0F000B5<SOT1020-1 (LFBGA256)|<<http://www.nxp.com/packages/SOT1020-1.html<1<Always Pb-free,;LH7A400N0F076B5<SOT1020-1 (LFBGA256)|<<http://www.nxp.com/packages/SOT
文件頁數(shù): 44/65頁
文件大?。?/td> 834K
代理商: LH7A400N0G000B5
LH7A400
32-Bit System-on-Chip
44
Rev. 01
16 July 2007
Preliminary data sheet
NXP Semiconductors
For National Semiconductor MICROWIRE format,
the serial frame pin (SSPFRM) is active LOW. Both the
SSP and external slave device drive their output data
on the falling edge of the clock, and latch data from the
other device on the rising edge of the clock. Unlike the
full-duplex transmission of the other two frame formats,
the National Semiconductor MICROWIRE format uti-
lizes a master-slave messaging technique that oper-
ates in half-duplex. When a frame begins in this mode,
an 8-bit control message is transmitted to the off-chip
slave. During this transmission no incoming data is
received by the SSP. After the message has been sent,
the external slave device decodes the message. After
waiting one serial clock period after the last bit of the 8-
bit control message was received it responds by return-
ing the requested data. The returned data can be 4 to
16 bits in length, making the total frame length between
13 to 25 bits. See Figure 26 and Figure 27.
Figure 26. MICROWIRE Frame Format (Single Transfer)
Figure 27. MICROWIRE Frame Format (Continuous Transfers)
LH7A400-107
LSB
MSB
0
LSB
MSB
8-BIT CONTROL
SSPCLK
nSSPFRM
SSPTXD
SSPRXD
4 to 16 BITS
OUTPUT DATA
LH7A400-108
SSPCLK
nSSPFRM
SSPTXD
SSPRXD
4 to 16 BITS
OUTPUT DATA
8-BIT CONTROL
MSB
MSB
LSB
LSB
0
LSB
MSB
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LH7A400N0W000 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:32-Bit System-on-Chip