Datasheet

Electrical and Thermal Characteristics
MPC5121E/MPC5123 Data Sheet, Rev. 5
Freescale Semiconductor 51
Table 3-28. Timing Parameters PIO Write
ATA
Parameter
PIO Write
Mode Timing
Parameter
Value How to meet SpecID
t1 t1 t1(min) = time_1 × T – (tskew1 + tskew2 + tskew5) time_1.
1
1
See the MPC5121e Microcontroller Reference Manual.
A9.30
t2 t2r t2(min) = time_2w × T – (tskew1 + tskew2 + tskew5) calculate and programming
time_2w.
1
A9.31
t9 t9 t9(min) = time_9 × T – (tskew1 + tskew2 + tskew6) time_9.
1
A9.32
t3 — t3(min) = (time_2w – time_on) × T
– (tskew1 + tskew2 + tskew5)
If not met, increase time_2w A9.33
t4 t4 t4(min) = time_4 × T – tskew1 calculate and programming
time_4.
1
A9.34
tA tA tA = (1.5 + time_ax) × T 
– (tco + tsui + tcable2 + tcable2 + 2 × tbuf)
calculate and programming
time_ax.
1
A9.35
t0 — t0(min) = (time_1 + time_2 + time_9) × T time_1, time_2r, time_9 A9.36
— — Avoid bus contention when switching buffer on 
by making ton long enough
—
A9.37
— — Avoid bus contention when switching buffer off 
by making toff long enough
—
A9.38