Rsti And Configuration Override Timing - Motorola ColdFire MCF5281 User Manual

Table 33-14. Reset and Configuration Override Timing (Continued)
NUM
R5 RSTO valid to Config. Overrides valid
R6 Configuration Override Setup Time to RSTO invalid
R7 Configuration Override Hold Time after RSTO invalid
R8 RSTO invalid to Configuration Override High Impedance
1
All AC timing is shown with respect to 50% V
2
During low-power STOP, the synchronizers for the RSTI input are bypassed and RSTI is asserted asynchronously to
the system. Thus, RSTI must be held a minimum of 100 ns.
CLKOUT
RSTI
RSTO
Configuration Overrides:
(RCON, Override pins)
Figure 33-8. RSTI and Configuration Override Timing
2
33.11 I C Input/Output Timing Specifications
Table 33-15 lists specifications for the I
Table 33-15. I
Num
I1 Start condition hold time
I2 Clock low period
I3 SCL/SDA rise time (V
I4 Data hold time
I5 SCL/SDA fall time (V
I6 Clock high time
I7 Data setup time
I8 Start condition setup time (for repeated start condition only)
I9 Stop condition setup time
MOTOROLA
(V = 2.7 to 3.6 V, V
DD
Characteristic
levels unless otherwise noted.
DD
R1
R3
2
C input timing parameters shown in Figure 33-9.
2
C Input Timing Specifications between SCL and SDA
Characteristic
= 0.5 V to V = 2.4 V)
IL IH
= 2.4 V to V = 0.5 V)
IH IL
Chapter 33. Electrical Characteristics
2
I C Input/Output Timing Specifications
1
= 0 V)
SS
Symbol
t
ROVCV
t
COS
t
COH
t
ROICZ
R2
R4
R5
Min Max
2
8
—
0
—
4
0
2
2
Min Max Unit
0 — ns
20 — t
CYC
0 — ns
— 1 t
CYC
R4
R8
R6 R7
Units
— Bus clocks
— Bus clocks
1 mS
— ns
1 mS
— Bus clocks
— ns
— Bus clocks
— Bus clocks
33-19