Electrical Characteristics
CLKOUT
G2
G1
GPIO Outputs
G3
G4
GPIO Inputs
Figure 11. GPIO Timing
2.12 Reset Timing
Table 23. Reset and Configuration Override Timing
(VDD = 2.7 to 3.6 V, VSS = 0 V, TA = TL to TH)1
NUM
Characteristic
Symbol
Min
Max
Unit
R1 RSTI input valid to CLKOUT High
R2 CLKOUT High to RSTI Input invalid
R3 RSTI input valid time 2
tRVCH
tCHRI
9
1.5
5
—
—
—
10
ns
ns
tRIVT
tCYC
ns
R4 CLKOUT High to RSTO Valid
tCHROV
—
1
2
All AC timing is shown with respect to 50% VDD levels unless otherwise noted.
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
1R1
R2
R3
RSTI
R4
R4
RSTO
Figure 12. RSTI and Configuration Override Timing
2
2.13 I C Input/Output Timing Specifications
2
Table 24 lists specifications for the I C input timing parameters shown in Figure 13.
MCF52259 ColdFire Microcontroller, Rev. 0
40
Freescale Semiconductor
FREESCALE [ Freescale ]
