Instruction Manual

DS26503 T1/E1/J1 BITS Element
117 of 123
19.3 Serial Bus
Table 19-3. AC Characteristics, Serial Bus
(V
DD
= 3.3V ±5%, T
A
= 0°C to +70°C for DS26503L; V
DD
= 3.3V ±5%, T
A
= -40°C to +85°C for
DS26503LN.)
CHARACTERISTIC
(2)
SYMBOL MIN MAX UNITS
DIAGRAM
NUMBER
(1)
Operating Frequency
Slave
f
BUS(S)
10 MHz
1 Cycle Time: Slave t
CYC(S)
100 — ns
2 Enable Lead Time t
LEAD(S)
15 — ns
3 Enable Lag Time t
LAG(S)
15 — ns
4
Clock (CLK) High Time
Slave
t
CLKH(S)
50 — ns
5
Clock (CLK) Low Time
Slave
t
CLKL(S)
50 — ns
6
Data Setup Time (inputs)
Slave
t
SU(S)
5 — ns
7
Data Hold Time (inputs)
Slave
t
H(S)
15 — ns
CPHA = 0 t
A(CP0)
0 40
8 Access Time, Slave
(3)
CPHA = 1 t
A(CP1)
0 20
ns
9 Disable Time, Slave
(4)
t
DIS(S)
— 25 ns
10
Data Valid Time, After Enable Edge
Slave
(5)
t
V(S)
— 40 ns
11
Data Hold Time, Outputs, After Enable Edge
Slave
t
HD(S)
5 — ns
Note 1:
Numbers refer to dimensions in the following Figure 19-8
and Figure 19-9.
Note 2:
All timing is shown with respect to 20% V
DD
and 70% V
DD
, unless otherwise noted. 100pF load on all SPI pins.
Note 3:
Time to data active from high-impedance state.
Note 4:
Hold time to high-impedance state.
Note 5:
With 100pF on all SPI pins.