MITSUBISHI MICROCOMPUTERS
M37905F8CFP, M37905F8CSP
16-BIT CMOS MICROCOMPUTER
PERIPHERAL DEVICE INPUT/OUTPUT TIMING
(VCC = 5 V±0.5 V, VSS = 0 V, Ta = –20 to 85 °C, f(fsys) = 20 MHz unless otherwise noted)
For limits depending on f(fsys), their calculation formulas are shown below. Also, the values at f(fsys) = 20 MHz are shown in ( ).
Timer A input (Count input in event counter mode)
Limits
Symbol
Parameter
Unit
Min.
80
Max.
tc(TA)
TAiIN input cycle time
ns
ns
ns
tw(TAH)
tw(TAL)
TAiIN input high-level pulse width
TAiIN input low-level pulse width
40
40
Timer A input (Gating input in timer mode)
Limits
Symbol
Parameter
Unit
ns
Min.
16 × 109
f(fsys)
8 × 109
f(fsys)
8 × 109
f(fsys)
Max.
(800)
f(fsys)
≤
≤
≤
20 MHz
20 MHz
20 MHz
tc(TA)
TAiIN input cycle time
(400)
(400)
ns
f(fsys)
f(fsys)
tw(TAH)
tw(TAL)
TAiIN input high-level pulse width
TAiIN input low-level pulse width
ns
Note :The TAiIN input cycle time requires 4 or more cycles of a count source. The TAiIN input high-level pulse width and the TAiIN 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 A input (External trigger input in one-shot pulse mode)
Limits
Symbol
Parameter
Unit
ns
Min.
8 × 109
f(fsys)
Max.
tc(TA)
TAiIN input cycle time
f(fsys) ≤ 20 MHz
(400)
tw(TAH)
tw(TAL)
TAiIN input high-level pulse width
TAiIN input low-level pulse width
80
80
ns
ns
Timer A input (External trigger input in pulse width modulation mode)
Symbol Parameter
Limits
Unit
Min.
80
Max.
tw(TAH)
tw(TAL)
TAiIN input high-level pulse width
TAiIN input low-level pulse width
ns
ns
80
Timer A input (Up-down input and Count input in event counter mode)
Symbol Parameter
Limits
Unit
Min.
2000
1000
1000
400
Max.
tc(UP)
TAiOUT input cycle time
ns
ns
ns
ns
ns
tw(UPH)
TAiOUT input high-level pulse width
TAiOUT input low-level pulse width
TAiOUT input setup time
tw(UPL)
tsu(UP-TIN)
th(TIN-UP)
TAiOUT input hold time
400
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RENESAS [ RENESAS TECHNOLOGY CORP ]
