SH7764 Datasheet, PDF (1638/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 33 Electrical Characteristics
Item
Symbol Min. Max. Unit Figure
EXTAL clock input rise time
t_EXr

4
ns
33.2
EXTAL clock input fall time
CLKOUT clock output*²
t_EXf

4
ns
t
80
108 MHz
op
CLKOUT clock output cycle time
t
9.26 12.5 ns
CLKOUTcyc
33.3
CLKOUT clock output low-level pulse width t
2
CLKOUTL

ns
CLKOUT clock output high-level pulse width t
2
CLKOUTH

ns
CLKOUT clock output rise time
t_CLKOUTr

3
ns
CLKOUT clock output fall time
t
CLKOUTf

3
ns
MDn reset set up time
t_MDRS
30

ms
33.5
MDn reset hold time
PRESET assert time
t_MDRH
20

ns
T_RESPW
30

ms
33.4, 33.5
Power-on oscillation settling time
TRST reset hold time
T
60
OSC

µs
33.4
T
20
TRSTRH

ns
Notes: 1. The maximum frequency indicates 32.4 MHz when the crystal oscillator connects to
EXTAL and XTAL. The tank circuit is required as the external circuit when the three-
dimensional overtone oscillator.
2. The maximum connection load capacitance to the CLOKOUT pin is 50 pF.
t_EXH
t_EXcyc
t_EXL
EXTAL
V_IH
V_IH
input
1/2V_CCQ
V_IL
V_IL
t_EXf
V_IH
1/2V_CCQ
t_EXr
Note: When the clock is input on the EXTAL pin.
Figure 33.2 EXTAL Clock Input Timing
Rev. 1.00 Nov. 22, 2007 Page 1582 of 1692
REJ09B0360-0100