mc68hc908ld64 Freescale Semiconductor, Inc, mc68hc908ld64 Datasheet - Page 350

• Manufacturer Part Number: mc68hc908ld64
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Electrical Specifications
24.12.1 USB Low Speed Source Electrical Characteristics
Data Sheet
350
Notes:
Internal operating frequency
Transition time
Rise/Fall time matching
Output signal crossover voltage
Low speed data rate
Source differential driver jitter
Receiver data jitter tolerance
Source EOP width
Differential to EOP transition skew
Receiver EOP width
1. All voltages measured from local ground, unless otherwise specified. All timings use a capacitive load of 50pF, unless
2. Transitions are measured from 10% to 90% of the data signal. The rising and falling edges should be smoothly transitioning
3. Timing differences between the differential data signals.
4. Measured at crossover point of differential data signals.
Rise time
Fall time
To next transition
For paired transitions
To next transition
For paired transitions
Must reject as EOP
Must accept
otherwise specified. Low speed timings have a 1.5kΩ pull-up to 2.8V on the D– data line.
(monotonic). Capacitive loading includes 50pF of tester capacitance.
Characteristic
(2)
Table 24-11. USB Low Speed Source Electrical Characteristics
Symbol
TDEOP
T
TEOPT
T
T
T
T
T
T
T
V
DRATE
EOPR1
EOPR2
f
UDJ1
UDJ2
DJR1
DJR2
T
T
RFM
CRS
OP
Electrical Specifications
R
F
1.5Mbs ± 1.5%
Conditions
Notes
Note
C
C
C
C
C
C
Note
Note
Note
L
L
L
L
L
L
T
=200pF
=600pF
=200pF
=600pF
=350pF
=350pF
R
/T
(3), (4)
(3), (4)
(4)
(4)
(4)
F
(1)
1.4775
676.8
1.25
Min
–25
–10
–75
–45
–40
330
675
1.3
75
75
80
MC68HC908LD64
1.500
666.0
Typ
—
—
—
6
Freescale Semiconductor
1.5225
656.8
Max
1.50
300
300
120
100
2.0
25
10
75
45
—
Rev. 3.0
MHz
Unit
Mbs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
V