Renesas 7700 FAMILY User Manual page 317

ELECTRICAL CHARACTERISTICS
15.5 Internal peripheral devices
Timer B input (Pulse width measurement mode)
Symbol Parameter
t TBi input cycle time
c(TB) IN
t TBi input high-level pulse width
w(TBH) IN
t TBi input low-level pulse width
w(TBL) IN
Notes 1: TBi input cycle time must be 4 cycles or more of count source,
IN
TBi input high-level pulse width must be 2 cycles or more of count source,
IN
TBi 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
A-D trigger input
Symbol
_____
t
input cycle time (minimum allowable trigger)
AD
c(AD)
TRG
_____
t
input low-level pulse width
AD
w(ADL)
TRG
15–10
Data formula (Min.)
) ≤ 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
Parameter
7751 Group User's Manual
Limits
Min.
9
16 10
400
f(X )
IN
9
16 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
9
4 10
160
f(X )
IN
9
8 10
200
f(X )
IN
9
8 10
320
f(X )
IN
9
4 10
160
f(X )
IN
) 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.
1000
125
Unit
Max.
ns
ns
ns
.
4
.
4
.
2
Unit
Max.
ns
ns