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M38002M4 Datasheet, PDF (108/173 Pages) Mitsubishi Electric Semiconductor – 8-BIT SINGLE-CHIP MICROCOMPUTER | |||
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APPENDIX
3.1 Electrical characteristics
Table 3.1.8 Timing requirements in memory expansion mode and microprocessor mode (1)
(VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = â20 to 85 °C, unless otherwise noted)
Symbol
Parameter
Limits
Unit
Min. Typ. Max.
tsu(ONWâÏ) Before Ï ONW input set up time
â20
ns
th(ÏâONW) After Ï ONW input hold time
â20
ns
tsu(DBâÏ)
Before Ï data bus set up time
60
ns
th(ÏâDB)
After Ï data bus hold time
0
ns
tsu(ONWâRD) Before RD ONW input set up time
tsu(ONWâWR) Before WR ONW input set up time
â20
ns
th(RDâONW) After RD ONW input hold time
th(WRâONW) After WR ONW input hold time
â20
ns
tsu(DBâRD) Before RD data bus set up time
65
ns
th(RDâDB) After RD data bus hold time
0
ns
Table 3.1.9 Switching characteristics in memory expansion mode and microprocessor mode (1)
(VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = â20 to 85 °C, unless otherwise noted)
Symbol
tc(Ï)
twH( Ï)
twL(Ï)
td(ÏâAH)
tv(ÏâAH)
td(ÏâAL)
tv(ÏâAL)
td(ÏâSYNC)
Parameter
Ï clock cycle time
Ï clock âHâ pulse width
Ï clock âLâ pulse width
After Ï AD15âAD8 delay time
After Ï AD15âAD8 valid time
After Ï AD7âAD0 delay time
After Ï AD7âAD0 valid time
SYNC delay time
Test conditions
Limits
Min.
Typ.
Unit
Max.
2tc(XIN)
ns
tc(XIN)â10
ns
tc(XIN)â10
ns
20
40 ns
6
10
ns
25
45 ns
6
10
ns
20
ns
tv(ÏâSYNC)
td(ÏâWR)
tv(ÏâWR)
td(ÏâDB)
tv(ÏâDB)
twL(RD)
twL(WR)
SYNC valid time
RD and WR delay time
RD and WR valid time
After Ï data bus delay time
After Ï data bus valid time
RD pulse width, WR pulse width
RD pulse width, WR pulse width
(When one-wait is valid)
Fig. 3.1.1
10
10
3
5
20
15
tc(XIN)â10
3tc(XIN)â10
ns
20 ns
10 ns
70 ns
ns
ns
ns
td(AHâRD)
td(AHâWR)
After AD15âAD8 RD delay time
After AD15âAD8 WR delay time
tc(XIN)â35 tc(XIN)â15
ns
td(ALâRD)
td(ALâWR)
After AD7âAD0 RD delay time
After AD7âAD0 WR delay time
tc(XIN)â40 tc(XIN)â20
ns
tv(RDâAH)
tv(WRâAH)
After RD AD15âAD8 valid time
After WR AD15âAD8 valid time
0
5
ns
tv(RDâAL)
tv(WRâAL)
After RD AD7âAD0 valid time
After WR AD7âAD0 valid time
0
5
ns
td(WRâDB) After WR data bus delay time
15
65 ns
tv(WRâDB) After WR data bus valid time
10
ns
td(RESETâRESETOUT) RESETOUT output delay time
tv(ÏâRESET) RESETOUT output valid time (Note)
200 ns
0
200 ns
Note : The RESETOUT goes âHâ in sync with the fall of the Ï clock that is anywhere between about 8 cycle and 13 cycles after the RESET
input goes âHâ.
3-6
3800 GROUP USERâS MANUAL
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