Renesas 7700 FAMILY User Manual page 313

ELECTRICAL CHARACTERISTICS
15.5 Internal peripheral devices
15.5 Internal peripheral devices
Timing requirements (V
Timer A input (Count input in event counter mode)
Symbol
t TAi input cycle time
c(TA) IN
t TAi input high-level pulse width
w(TAH) IN
t TAi input low-level pulse width
w(TAL) IN
Timer A input (Gating input in timer mode)
Symbol Parameter
t TAi input cycle time
c(TA) IN
t TAi input high-level pulse width
w(TAH) IN
t TAi input low-level pulse width
w(TAL) IN
Notes 1: TAi input cycle time must be 4 cycles or more of count source,
IN
TAi input high-level pulse width must be 2 cycles or more of count source,
IN
TAi input low-level pulse width must be 2 cycles or more of count source.
IN
2: The limits in the upper row of the table are the values when f(X
The limits in the middle row of the table are the values when f(X
The limits in the lower row of the table are the values when f(X
15–6
= 0 V, Ta = –20 to 85 °C, unless otherwise noted)
= 5 V±10%, V
CC SS
Parameter
) ≤ 40 MHz
f(X
IN
) ≤ 25 MHz
f(X
IN
when φ divided by 2 selected as clock
source for peripheral devices
) ≤ 25 MHz
f(X
IN
when φ selected as clock source for
peripheral devices
) ≤ 40 MHz
f(X
IN
) ≤ 25 MHz
f(X
IN
when φ divided by 2 selected as clock
source for peripheral devices
) ≤ 25 MHz
f(X
IN
when φ selected as clock source for
peripheral devices
) ≤ 40 MHz
f(X
IN
) ≤ 25 MHz
f(X
IN
when φ divided by 2 selected as clock
source for peripheral devices
) ≤ 25 MHz
f(X
IN
when φ selected as clock source for
peripheral devices
7751 Group User's Manual
Data formula (Min.)
16
16
) is 40 MHz and the count source is f
IN
) is 25 MHz and the count source is f
IN
) is 25 MHz and the count source is f
IN
Limits
Min. Max.
80
40
40
Limits
Min. Max.
10 9
400
f(X )
IN
9
10
640
f(X )
IN
9
8 10
320
f(X )
IN
9
8 10
200
f(X )
IN
9
8 10
320
f(X )
IN
4 10 9
160
f(X )
IN
8 10 9
200
f(X )
IN
8 10 9
320
f(X )
IN
4 10 9
160
f(X )
IN
Unit
ns
ns
ns
Unit
ns
ns
ns
.
4
.
4
.
2