Renesas SH7781 - Manual (Page 1599)

32. Electrical Characteristics
Rev.1.00 Jan. 10, 2008 Page 1569 of 1658
REJ09B0261-0100
Item Symbol Min. Max. Unit Figure
MODE13 to MODE11,
MODE8 to MODE5 t
MDRH
20
⎯ ns
32.6 MODE reset hold time
MODE14, MODE10,
MODE9, MODE4 to
MODE0 32.4
PRESET assert time
t
RESW
20
⎯
t
cyc
32.4
PLL synchronization settling time t
PLL
400
⎯ μs 32.5
TRST reset hold time
t
TRSTRH
0
⎯ ns
32.4
PRESET input rise time
t
PRr
⎯ 20 μs 32.6
PRESET input fall time
t
PRf
⎯ 20 μs 32.6
Notes: 1. With a crystal resonator connected on EXTAL and XTAL, the maximum frequency is 34
MHz. When using a third-order overtone crystal resonator, a tank circuit must be
connected externally.
2. The load capacitance connected on the CLKOUT pin should be not greater than 50 pF.
3. t
cyc
is the period of one CLKOUT clock cycle.
4. This applies to clock operating modes 0, 1, 2, and 3 (see table 15.2).
5. This applies to clock operating modes 8, 9, 10, and 11 (see table 15.2).
6. This applies to clock operating modes 16, 17, 18, and 19 (see table 15.2).
Note: When the clock is input from the EXTAL pin.
t
EXcyc
t
EXH
t
EXL
t
EXr
t
EXf
1/2V
DDQ
V
IH
V
IH
V
IL
V
IL
V
IH
1/2V
DDQ
Figure 32.1 EXTAL Clock Input Timing