PXD20 Datasheet, PDF (126/130 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

Electrical characteristics
t_R
t_F
70%
VDDE
30%
SCK
Figure 44. QuadSPI clock profile
4.18.13 TCON/RSDS timing
The following notes apply to Table 71:
• Measurement condition: Vdde/Vdd33 = 3.3 V ± 10%, Vdd = 1.2 V ± 10%, Vss/Vsse = 0 V, T = –40 to 105°C
• Termination: 100  ± 5%
• VREFH_RSDS terminations of 47 F
Table 71. TCON/RSDS timing
Symbol C
Parameter
Condition
Value
Unit SpecID
Min
Typ
Max
V_OD CC C Differential output voltage RSDS mode
391
—
471 mV A14.1
V_OS CC C Common mode voltage 100  termination between
1.17
—
Pad_p and Pad_n
1.4
V A14.2
tr
CC C Rise time
Transition from 20% to 80% 606
—
844 ps A14.3
tf
CC C Fall time
Transition from 20% to 80% 607
—
842 ps A14.4
tplh CC D Propagation delay, low to
—
high
—
2.65
—
ns A14.5
tphl CC D Propagation delay, high to
—
low
—
2.47
—
ns A14.6
tdz CC D Start-up time
—
—
200
—
s
tskew^{1 2 3} CC C Skew between different Max and min skew between
—
—
—
ps
RSDS lines
clock and data pads
1 _{There are eight programmable bits to provide 256 different skew numbers with various combinations of these bits.}
2 _{Default value of all the eight skew options are all “1”.}
3 _{All “0” combination of eight bits is not valid.}
A14.7
A14.8
PXD20 Microcontroller Data Sheet, Rev. 2
126
Preliminary—Subject to Change Without Notice
Freescale Semiconductor