APPENDIX
Appendix 9. M37906M4C-XXXFP electrical characteristics
Timer B input (Count input in event counter mode)
Limits
Symbol
Parameter
Unit
Min.
80
Max.
tc(TB)
TBiIN input cycle time (one edge count)
ns
ns
ns
ns
ns
ns
tw(TBH)
tw(TBL)
tc(TB)
TBiIN input high-level pulse width (one edge count)
TBiIN input low-level pulse width (one edge count)
TBiIN input cycle time (both edge count)
40
40
160
80
tw(TBH)
tw(TBL)
TBiIN input high-level pulse width (both edge count)
TBiIN input low-level pulse width (both edge count)
80
Timer B input (Pulse period measurement mode)
Symbol Parameter
Limits
Unit
ns
Min.
16 × 109
f(fsys)
8 × 109
f(fsys)
8 × 109
f(fsys)
Max.
tc(TB)
TBiIN input cycle time
f(fsys) ≤ 20 MHz
f(fsys) ≤ 20 MHz
f(fsys) ≤ 20 MHz
(800)
tw(TBH)
tw(TBL)
TBiIN input high-level pulse width
TBiIN input low-level pulse width
(400)
(400)
ns
ns
Note: The TBiIN input cycle time requires 4 or more cycles of a count source. The TBiIN input high-level pulse width and the TBiIN input low-level pulse width
respectively require 2 or more cycles of a count source. The limits in this table are applied when the count source = f2 at f(fsys) ≤ 20 MHz.
Timer B input (Pulse width measurement mode)
Limits
Symbol
Parameter
Unit
ns
Min.
16 × 109
f(fsys)
8 × 109
f(fsys)
8 × 109
f(fsys)
Max.
tc(TB)
TBiIN input cycle time
f(fsys) ≤ 20 MHz
f(fsys) ≤ 20 MHz
f(fsys) ≤ 20 MHz
(800)
(400)
(400)
tw(TBH)
tw(TBL)
TBiIN input high-level pulse width
TBiIN input low-level pulse width
ns
ns
Note: The TBiIN input cycle time requires 4 or more cycles of a count source. The TBiIN input high-level pulse width and the TBiIN input low-level pulse width
respectively require 2 or more cycles of a count source. The limits in this table are applied when the count source = f2 at f(fsys) ≤ 20 MHz.
Serial I/O
Limits
Symbol
Parameter
Unit
Min.
200
100
100
Max.
80
tc(CK)
CLKi input cycle time
ns
ns
ns
ns
ns
ns
ns
tw(CKH)
tw(CKL)
td(C-Q)
th(C-Q)
tsu(D-C)
th(C-D)
CLKi input high-level pulse width
CLKi input low-level pulse width
TXDi output delay time
TXDi hold time
0
20
90
RXDi input setup time
RXDi input hold time
7906 Group User’s Manual Rev.2.0
20-114
RENESAS [ RENESAS TECHNOLOGY CORP ]
