ꢃꢅ-bit �RM Coꢁtex™-Mꢃ MCU
HTꢃꢅF1ꢅ51/51B/5ꢅ/5ꢃ
SPI Characteristics
Table 19. SPI Characteristics
Symbol
fSCK
Parameter
SCK cꢂock fꢁequency
SCK cꢂock high time
SCK cꢂock ꢂow time
Conditions
Min
—
Typ
—
Max
fPCLK/4
—
Unit
MHz
ns
—
—
—
tSCK(H)
fPCLK/8
fPCLK/8
—
tSCK(L)
—
—
ns
SPI Masteꢁ mode
tV(MO)
tH(MO)
tSU(MI)
tH(MI)
Data outꢀut vaꢂid time
—
—
—
—
—
ꢅ
—
—
—
—
5
ns
ns
ns
ns
Data outꢀut hoꢂd time
Data inꢀut setuꢀ time
Data inꢀut hoꢂd time
—
—
—
5
5
SPI Sꢂave mode
tSU(SEL)
tH(SEL)
t�(SO)
tDIS(SO)
tV(SO)
tH(SO)
tSU(SI)
tH(SI)
SEL enabꢂe setuꢀ time
—
—
—
—
—
—
—
—
4 tPCLK
ꢅ tPCLK
—
—
—
—
—
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
SEL enabꢂe hoꢂd time
Data outꢀut access time
Data outꢀut disabꢂe time
Data outꢀut vaꢂid time
Data outꢀut hoꢂd time
Data inꢀut setuꢀ time
Data inꢀut hoꢂd time
ꢃ tPCLK
10
—
—
ꢅ5
15
—
5
—
4
—
tSCK
SCK (CPOL = 0)
SCK (CPOL = 1)
tSCK(H)
tSCK(L)
tV(MO)
tH(MO)
MOSI
MISO
DATA VALID
DATA VALID
DATA VALID
DATA VALID
tSU(MI)
tH(MI)
CPHA = 1
DATA VALID
DATA VALID
tH(MO)
tV(MO)
MOSI
MISO
DATA VALID
tSU(MI) tH(MI)
DATA VALID
DATA VALID
DATA VALID
CPHA = 0
DATA VALID
DATA VALID
Figure 8. SPI Timing Diagram – SPI Master Mode
Rev. 1.10
ꢃ1 of ꢃ5
�ꢀꢁiꢂ 1ꢃꢄ ꢅ01ꢅ
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
