
G-58
MPC561/MPC563 Reference Manual
MOTOROLA
TouCAN Electrical Characteristics
G.19 TouCAN Electrical Characteristics
G.20 PPM Timing Characteristics
Table G-21. TouCAN Timing 1
Note: (T
A
= TL to TH)
Num
Rating
Symbol
Min
Max
Unit
127 CNTX0 (Delay from ICLOCK)
tCNTX0
19
ns
128 CNRX0 (Set-Up to ICLOCK rise)
tCNRX0
0ns
129 Rise Time
Input
Output –
50 pF load, SLRC1 bit of PDMCR = “0”
200 pF load, SLRC1 bit of PDMCR = “0”
50 pF, SLRC1 bit of PDMCR = “1”
tRI
tRO
1
50
100
25
s
ns
130 Fall Time
Input
Output–
50 pF load, SLRC1 bit of PDMCR = “0”
200 pF load, SLRC1 bit of PDMCR = “0”
50 pF, SLRC1 bit of PDMCR = “1”
tFI
tFO
1
50
100
25
s
ns
Serial Pins (Maximum frequency)
tF
1—
MHz
Table G-22. PPM Timing
Note: (TA = TL to TH, 50 pF Load on all Pins)
Num
Rating
Symbol
Min
Max
Unit
131 Operating Frequency 1
fOP
fSYS/256
fSYS/2
2
Hz
132 Cycle Time
tCYC
2*TC
256*TC 3
ns
133 PPM Clock (PPM_TCLK) high or low time
tSW
(tcyc/2) - (tRO + tFI)
ns
134 Sequential Transfer Delay
tTD
9*tcyc
17*tcyc
ns
135 Data Setup Time (Inputs)
tSU
30
—
ns
136 Data Hold Time (Inputs)
tHI
0—
ns
137 Data Valid (After PPM_TCLK Edge)
tV
—5
ns
138 Data Hold Time (Outputs)
tHO
TC/2
—
ns