SH7764 Datasheet, PDF (1696/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 33 Electrical Characteristics
33.4.11 USB Module Signal Timing
Table 33.27 USB Module Clock Timing
Conditions: 3.3-V power supply= 3.0 to 3.6 V, 1.2-V power supply= 1.15 to 1.35,
Ta = –20 to 85°C, –40 to 85°C
Item
Symbol
USB_CLK external input clock t
FREQ
frequency (48 MHz)
Clock riseing time
t_R48
Clock falling time
t
F48
Duty (t /t )
HIGH LOW
t
DUTY
Min.
47.9


90
Max.
48.1
2
2
110
Unit
MHz
ns
ns
%
Figure
33.62
USB_CLK (input)
t_FREQ
t_HIGH
t_LOW
90 %
10 %
t_R48
t_F48
Figure 33.62 USB Clock Timing
Table 33.28 USB Electrical Characteristics (for Full Speed)
Item
Symbol Min.
Max.
Unit
Condition*¹
Transition time (rising)*²
t
R
4
20
ns
CL= 50 pF
Transition time (falling)*²
t
F
4
20
ns
CL= 50 pF
Rising/ falling time matching t
90
RFM
111
%
(TR/TF)
Output signal crossover voltage V_CRS
1.3
2.0
V

Notes: The values are measured under the condition that the capacitor for edge control
C_EDGE = 47pF is connected to the serial resistor Rs = 45Ω.
1. The condition is that CL = 50pF unless otherwise specified.
2. Within 10 to 90% of the signal voltage.
Rev. 1.00 Nov. 22, 2007 Page 1640 of 1692
REJ09B0360-0100