38K0 Datasheet, PDF (118/133 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

38K0 Group (L Ver.)
Table 24 Timing requirements 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
tsu(S-R)
tsu(S-W)
th(R-S)
th(W-S)
tsu(A-R)
tsu(A-W)
th(R-A)
th(W-A)
tsu(ACK-R)
tsu(ACK-W)
th(R-ACK)
th(W-ACK)
tWH(R)
tWL(R)
tWH(W)
tWL(W)
tWH(ACK)
tWL(ACK)
tsu(D-W)
th(W-D)
tsu(D-ACK)
th(ACK-W)
tC(φ)
tW(cycle)
Parameter
ExCS setup time for read
ExCS setup time for write
ExCS hold time for read
ExCS hold time for write
ExA0, ExA1 setup time for read
ExA0, ExA1 setup time for write
ExA0, ExA1 hold time for read
ExA0, ExA1 hold time for write
ExDACK setup time for read
ExDACK setup time for write
ExDACK hold time for read
ExDACK hold time for write
Read “H” pulse width
Read “L” pulse width
Write “H” pulse width
Write “L” pulse width
ExDACK “H” pulse width
ExDACK “L” pulse width
Data input setup time before write
Data input hold time after write
Data input setup time before ExDACK
Data input hold time after ExDACK
CPU clock cycle time
Burst mode access cycle time
USB function not operating
USB function operating
Min.
0
0
0
0
30
30
0
0
30
30
0
0
120
120
120
120
160
160
60
0
80
10
166
tC(φ)•3+30
tC(φ)•5+30
Limits
Typ.
Unit
Max.
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Rev.3.00 Oct 05, 2006 page 118 of 129
REJ03B0192-0300