HT32F52220 Datasheet, PDF (34/39 Pages) Holtek Semiconductor Inc – 32-Bit ARM Cortex-M0+ Microcontroller

32-Bit ARM^® Cortex™-M0+ MCU
HT32F52220/HT32F52230
SCK (CPOL = 0)
SCK (CPOL = 1)
MOSI
MISO
t_SCK
t_SCK(H)
t_SCK(L)
t_V(MO)
t_H(MO)
DATA VALID
t_{SU(MI )}
t_{H(MI )}
DATA VALID
DATA VALID
DATA VALID
DATA VALID
CPHA = 1
DATA VALID
MOSI
MISO
t_V(MO)
t_H(MO)
DATA VALID
t_{SU(MI )}
t_{H(MI )}
DATA VALID
DATA VALID
DATA VALID
DATA VALID
DATA VALID
CPHA = 0
Figure 9 SPI Timing Diagrams – SPI Master Mode
SEL
SCK
(CPOL=0)
SCK
(CPOL=1)
MOSI
MISO
t_SU(SEL)
t_SCK
t_SCK(H)
t_SCK(L)
t_SU(SI)
t_H(SI)
MSB/LSB IN
t_A(SO) t_V(SO)
t_H(SO)
MSB/LSB OUT
Figure 10 SPI Timing Diagrams – SPI Slave Mode with CPHA=1
t_H(SEL)
LSB/MSB IN
t_DIS(SO)
LSB/MSB OUT
Rev. 1.21
34 of 39
April 11, 2017