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NuMicro® NUC029LEE/NUC029SEE
32-bit Arm
®
Cortex
®
-M0 Microcontroller
Aug, 2018
Page
427
of
497
Rev 1.00
N
U
MICRO
®
N
UC02
9L
E
E
/N
UC029
S
E
E
T
E
CHN
ICA
L R
E
F
E
R
E
NC
E
M
A
NU
A
L
SPIn_CLK
SPIn_MOSI0
SPIn_MISO0
TX0[6]
TX0[0]
TX0[7]
TX0[6]
LSB
TX0[0]
RX0[6]
RX0[0]
RX0[6]
LSB
RX0[0]
MSB
RX0[7]
RX0[7]
MSB
TX0[7]
SPIn_SS0
CLKP=0
CLKP=1
SS_LVL=0
SS_LVL=1
Slave Mode: CNTRL[SLVAE]=1, CNTRL[LSB]=0, CNTRL[TX_BIT_LEN]=0x08
1. CNTRL[CLKP]=0, CNTRL[TX_NEG]=1, CNTRL[RX_NEG]=0 or
2. CNTRL[CLKP]=1, CNTRL[TX_NEG]=0, CNTRL[RX_NEG]=1
Figure 6.15-13 SPI Timing in Slave Mode
SPIn_CLK
SPIn_MOSI0
SPIn_MISO0
TX0[1]
TX0[7]
TX0[0]
TX0[1]
MSB
TX0[7]
RX0[1]
RX0[7]
RX0[1]
MSB
RX0[7]
LSB
RX0[0]
RX0[0]
LSB
TX0[0]
SPIn_SS0
CLKP=0
CLKP=1
SS_LVL=0
SS_LVL=1
Slave Mode: CNTRL[SLVAE]=1, CNTRL[LSB]=1, CNTRL[TX_BIT_LEN]=0x08
1. CNTRL[CLKP]=0, CNTRL[TX_NEG]=0, CNTRL[RX_NEG]=1 or
2. CNTRL[CLKP]=1, CNTRL[TX_NEG]=1, CNTRL[RX_NEG]=0
Figure 6.15-14 SPI Timing in Slave Mode (Alternate Phase of SPI Bus Clock)