Microchip Technology TSSOP20EV Data Sheet
© 2009 Microchip Technology Inc.
DS22233A-page 13
MCP434X/436X
FIGURE 1-2:
SPI Timing Waveform (Mode = 11).
TABLE 1-2:
SPI REQUIREMENTS (MODE =
11
)
#
Characteristic
Symbol
Min
Max Units
Conditions
SCK Input Frequency
F
SCK
—
10
MHz
V
DD
= 2.7V to 5.5V
—
1
MHz
V
DD
= 1.8V to 2.7V
70
CS Active (V
IL
or V
IHH
) to SCK
↑ input
TcsA2scH
60
—
ns
71
SCK input high time
TscH
45
—
ns
V
DD
= 2.7V to 5.5V
500
—
ns
V
DD
= 1.8V to 2.7V
72
SCK input low time
TscL
45
—
ns
V
DD
= 2.7V to 5.5V
500
—
ns
V
DD
= 1.8V to 2.7V
73
Setup time of SDI input to SCK
↑ edge
T
DI
V2scH
10
—
ns
V
DD
= 2.7V to 5.5V
20
—
ns
V
DD
= 1.8V to 2.7V
74
Hold time of SDI input from SCK
↑ edge
TscH2
DI
L
20
—
ns
77
CS Inactive (V
IH
) to SDO output hi-impedance
TcsH2
DO
Z
—
50
ns
80
SDO data output valid after SCK
↓ edge
TscL2
DO
V
—
70
ns
V
DD
= 2.7V to 5.5V
170
ns
V
DD
= 1.8V to 2.7V
83
CS Inactive (V
IH
) after SCK
↑ edge
TscH2csI
100
—
ns
V
DD
= 2.7V to 5.5V
1
ms
V
DD
= 1.8V to 2.7V
84
Hold time of CS Inactive (V
IH
) to
CS Active (V
IL
or V
IHH
)
TcsA2csI 50
—
ns
Note 1:
This specification by design.
CS
SCK
SDO
SDI
70
71
72
73
74
75, 76
77
78
79
80
SDI
MSb
LSb
BIT6 - - - - - -1
MSb IN
BIT6 - - - -1
LSb IN
83
84
V
IH
V
IL
V
IHH
V
IH