HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 821

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Note: When USB is operated by a clock which is supplied from an external device to the UCLK
28.3.11 USB Transceiver Timing
Table 28.13 USB Transceiver Timing (Full-Speed)
Conditions: V
Note: Includes an externally connected series resistance, RS = 27 Ω ± 1 %.
Table 28.14 USB Transceiver Timing (Low-Speed)
Conditions: V
Item
Rise time
Fall time
Rise/fall time ratio
Output signal crossover voltage
Output driver resistance*
Item
Rise time
Fall time
Rise/fall time ratio
Output signal crossover voltage
pin without using the on-chip multiplier circuit, the clock should be in conformance with the
USB specifications Ver. 1.1.
CC
CC
= 2.7 to 3.6 V, AV
= 2.7 to 3.6 V, AV
Figure 28.59 USB Clock Timing
10%
90%
CC
CC
(USB) = 3.0 to 3.6 V, V
(USB) = 3.0 to 3.5 V, V
t
Symbol
t
t
t
V
Z
Symbol
t
t
t
V
R48
r
f
r
r
f
r
/t
/t
DRU
CRS
CRS
f
f
t
HIGH
t
FREQ
t
F48
Min.
4
4
80
1.3
28
Min.
75
—
75
—
80
1.3
t
LOW
Typ.
—
—
—
—
—
Typ.
—
—
—
—
—
—
DD
DD
= 1.4 to 1.6 V, Ta = –40 to 85°C
= 1.4 to 1.6 V, Ta = –40 to 85°C
Rev. 1.00, 02/04, page 783 of 804
Max.
20
20
120
2.0
44
Max.
—
300
—
300
125
2.0
Unit
ns
ns
%
V
Ω
Unit
ns
ns
ns
ns
%
V
Test
Conditions
C
C
—
Test
Conditions
C
C
C
C
—
L
L
L
L
L
L
= 50 pF
= 50 pF
= 200 pF
= 600 pF
= 200 pF
= 600 pF