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21 ELECTRICAL CHARACTERISTICS
Master and slave modes
(CPOL, CPHA) = (1, 0) or (0, 1)
(CPOL, CPHA) = (1, 1) or (0, 0)
Slave mode
#SPISSn
SPICLKn
(CPOL, CPHA) = (0, 1)
SPICLKn
(CPOL, CPHA) = (1, 0)
SDIn
SDOn
21.11 I
C (I2C) Characteristics
2
Unless otherwise specified: V
DD
Item
Symbol
SCLn frequency
f
SCL
Hold time (repeated)
t
HD:STA
START condition *
SCLn Low pulse width
t
LOW
SCLn High pulse width
t
HIGH
Repeated START condition
t
SU:STA
setup time
Data hold time
t
HD:DAT
Data setup time
t
SU:DAT
SDAn, SCLn rise time
t
r
SDAn, SCLn fall time
t
f
STOP condition setup time t
SU:STO
Bus free time
t
BUF
t
f
t
r
SDAn
t
HD:DAT
t
f
SCLn
S
t
HD:STA
1/f
SCL
1st clock cycle
21-12
SPICLKn
SPICLKn
SDIn
t
SDO
SDOn
t
SSS
t
SDD
Hi-Z
= 1.2 to 3.6 V, V
= 0 V, Ta = -40 to 85 °C
SS
Condition
Min.
t
SU:DAT
t
t
r
HIGH
t
LOW
9th clock cycle
Seiko Epson Corporation
t
SCYC
t
SCKH
t
t
SDS
SDH
Standard mode
V
= 1.2 to 3.6 V
DD
Typ.
Max.
–
0
100
4.0
–
–
4.7
–
–
4.0
–
–
4.7
–
–
0
–
–
250
–
–
–
–
1,000
–
–
300
4.0
–
–
4.7
–
–
* After this period, the first clock pulse is generated.
t
SU:STA
t
HD:STA
Sr
t
SCKL
t
SSH
t
SDZ
Fast mode
V
= 1.6 to 3.6 V
DD
Min.
Typ.
Max.
–
0
400
0.6
–
–
1.3
–
–
0.6
–
–
0.6
–
–
0
–
–
100
–
–
–
–
300
–
–
300
0.6
–
–
1.3
–
–
t
BUF
t
SU:STO
P
S
S: START condition
Sr: Repeated START condition
P: STOP condition
S1C17W12/W13 TECHNICAL MANUAL
Unit
kHz
µs
µs
µs
µs
µs
ns
ns
ns
µs
µs
(Rev. 1.2)
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