38K2 Datasheet, PDF (138/151 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

38K2 Group (L Ver.)
Table 28 Switching characteristics of external bus interface (EXB) (1)
(VCC = 4.00 to 5.25 V, VSS = 0 V, Ta = –20 to 85 °C, unless otherwise noted)
Symbol
ta(R-D)
tv(R-D)
ta(ACK-D)
tv(ACK-D)
td(R-Mdis)
td(W-Mdis)
td(R-Men)
td(W-Men)
Parameter
Data output enable time after read
Data output disable time after read
Data output enable time after ExDACK
Data output disable time after ExDACK
In cycle mode
Mch_req disable output delay time after read
In cycle mode
Mch_req disable output delay time after write
In cycle mode
Mch_req enable output delay time after read
In cycle mode
Mch_req enable output delay time after write
Min.
0
0
USB function not operating
USB function operating
USB function not operating
USB function operating
Limits
Typ.
Max.
Unit
60
ns
ns
80
ns
ns
tC(φ)+10
ns
tC(φ)+10
ns
tC(φ)•3+10 ns
tC(φ)•5+10 ns
tC(φ)•3+10 ns
tC(φ)•5+10 ns
Table 29 Switching characteristics of external bus interface (EXB) (2)
(VCC = 3.00 to 4.00 V, VSS = 0 V, Ta = –20 to 85 °C, unless otherwise noted)
Symbol
ta(R-D)
tv(R-D)
ta(ACK-D)
tv(ACK-D)
td(R-Mdis)
td(W-Mdis)
td(R-Men)
td(W-Men)
Parameter
Data output enable time after read
Data output disable time after read
Data output enable time after ExDACK
Data output disable time after ExDACK
In cycle mode
Mch_req disable output delay time after read
In cycle mode
Mch_req disable output delay time after write
In cycle mode
Mch_req enable output delay time after read
In cycle mode
Mch_req enable output delay time after write
Min.
0
0
USB function not operating
USB function operating
USB function not operating
USB function operating
Limits
Typ.
Max.
Unit
80
ns
ns
120
ns
ns
tC(φ)+30
ns
tC(φ)+30
ns
tC(φ)•3+30 ns
tC(φ)•5+30 ns
tC(φ)•3+30 ns
tC(φ)•5+30 ns
Rev.3.00 Oct 15, 2006 page 138 of 147
REJ03B0193-0300