MCIMX27 Motorola Semiconductor Products, MCIMX27 Datasheet - Page 48

• Manufacturer Part Number: MCIMX27
• Manufacturer: Motorola Semiconductor Products

Signal Descriptions
3.5.2
Figure 4
Figure 5
48
PA1
ID
One-Wire bus
(BATT_LINE)
OW1
OW2
OW3
OW4
ID
depicts the RPP timing, and
depicts Write 0 Sequence timing, and
Output Pad Transition Times (DDR Drive)
Output Pad Transition Times (Max High)
Output Pad Transition Times (High)
Output Pad Transition Times (Normal)
Maximum Input Transition Times
1-Wire Electrical Specifications
(BATT_LINE)
One-Wire bus
Reset Time Low
Presence Detect High
Presence Detect Low
Reset Time High
Table 16. RPP Sequence Delay Comparisons Timing Parameters
Figure 4. Reset and Presence Pulses (RPP) Timing Diagram
Parameter
Table 15. AC Electrical Characteristics of DDR I/O Pads
Parameters
“Reset Pulse”
1-Wire Tx
i.MX27 Data Sheet, Advance Information, Rev. 0.1
Figure 5. Write 0 Sequence Timing Diagram
OW1
Preliminary—Subject to Change Without Notice
Table 16
lists the RPP timing parameters.
Table 17
OW5
Symbol
t
t
t
t
trm
RSTL
PDH
PDL
RSTH
tpr
tpr
tpr
tpr
Symbol
lists the timing parameters.
OW6
Test Condition
OW3
OW2
25 pF
50 pF
25 pF
50 pF
25 pF
35 pF
25 pF
50 pF
“Presence Pulse”
—
Min
480
480
DS2502 Tx
15
60
0.67
1.95
Typ
511
512
Min
OW4
0.5
1.0
1.3
1.0
2.0
3.9
—
—
—
0.75
1.45
Typ
1.0
2.0
1.5
2.9
2.9
5.9
Freescale Semiconductor
—
Max
240
60
—
Max
1.2
2.4
1.6
3.1
2.4
4.7
4.8
8.4
5
Units
µs
µs
µs
—
Units
ns
ns
ns
ns
ns