MB90610A Series
(6) Bus Timing (Read)
(VCC = +2.7 V to +5.5 V, VSS = 0.0 V, TA = –40°C to +85°C)
Value
Sym-
Parameter
bol
Pin name
Conditions
Unit Remarks
Min.
VCC = +5.0 V±10% tCP/2 – 20
VCC = +3.0 V±10% tCP/2 – 35
VCC = +5.0 V±10% tCP/2 – 20
VCC = +3.0 V±10% tCP/2 – 40
tCP/2 – 15
Max.
—
ns
ns
ns
ns
ns
ALE pulse width
tLHLL
ALE
—
—
Valid address → ALE ↓ time tAVLL
ALE ↓ → address valid time tLLAX
Address
Address
—
—
—
RD,
Address
Valid address → RD ↓ time
tAVRL
tAVDV
tRLRH
tRLDV
tCP – 15
—
ns
ns
ns
ns
ns
ns
5 tCP/2 –
60
VCC = +5.0 V±10%
VCC = +3.0 V±10%
—
—
—
Valid address → valid data
input
Address/
data
5 tCP/2 –
80
3 tCP/2 –
20
RD pulse width
RD
—
3 tCP/2 –
60
VCC = +5.0 V±10%
VCC = +3.0 V±10%
RD ↓ → valid data input
—
Data
3 tCP/2 –
80
RD ↑ → data hold time
RD ↑ → ALE ↑ time
tRHDX
tRHLH
0
—
—
ns
ns
RD, ALE
tCP/2 – 15
Address,
RD
RD ↑ → address valid time
tRHAX
tCP/2 – 10
—
ns
—
Address,
CLK
Valid address → CLK ↑ time tAVCH
RD ↓ → CLK ↑ time
tCP/2 – 20
tCP/2 – 20
—
—
ns
ns
tRLCH
RD, CLK
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