Datasheet

Section 26 Electrical Characteristics
Page 1298 of 1408 R01UH0309EJ0500 Rev. 5.00
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
Item Symbol Min. Max. Unit Test Conditions
Read command hold time t
RCH
0.5 × t
cyc
−10 ⎯ ns
CAS delay time 1 t
CASD1
⎯ 15 ns
CAS delay time 2 t
CASD2
⎯ 15 ns
CAS setup time 1 t
CSR1
0.5 × t
cyc
−10 ⎯ ns
CAS setup time 2 t
CSR2
1.5 × t
cyc
−10 ⎯ ns
CAS pulse width 1 t
CASW1
1.0 × t
cyc
−20 ⎯ ns
CAS pulse width 2 t
CASW2
1.5 × t
cyc
−20 ⎯ ns
CAS precharge time 1 t
CPW1
1.0 × t
cyc
−20 ⎯ ns
CAS precharge time 2 t
CPW2
1.5 × t
cyc
−20 ⎯ ns
t
OED1
⎯ 15 ns OE delay time 1*
1
t
OED1B
⎯ 19 ns
t
OED2
⎯ 15 ns OE delay time 2*
1
t
OED2B
⎯ 19 ns
Precharge time 1 t
PCH1
1.0 × t
cyc
−20 ⎯ ns
Precharge time 2 t
PCH2
1.5 × t
cyc
−20 ⎯ ns
Figures 26.8 to
26.23, 26.29, and
26.30
Self-refresh precharge time 1 t
RPS1
2.5 × t
cyc
−20 ⎯ ns
Self-refresh precharge time 2 t
RPS2
3.0 × t
cyc
−20 ⎯ ns
Figures 26.22
and 26.23
WAIT setup time t
WTS
25 ⎯ ns
WAIT hold time t
WTH
1 ⎯ ns
Figures 26.10,
26.16, and 26.35
BREQ setup time t
BREQS
30 ⎯ ns Figure 26.24
BACK delay time t
BACD
⎯ 15 ns
Bus floating time t
BZD
⎯ 40 ns
BREQO delay time t
BRQOD
⎯ 25 ns Figure 26.25
Address delay time 2*
2
t
AD2
⎯ 16.5 ns Figure 26.26
CS delay time 4*
2
t
CSD4
⎯ 16.5 ns Figure 26.26
DQM delay time*
2
t
DQMD
⎯ 16.5 ns Figure 26.26
t
CKED
⎯ 16.5 ns CKE delay time *
2
*
3
t
CKEDB
⎯ 19 ns
Figures 26.27
and 26.28
Read data setup time 3*
2
t
RDS3
15 ⎯ ns Figure 26.26
Read data hold time 3*
2
t
RDH3
0 ⎯ ns Figure 26.26
Write data delay time 2*
2
t
WDD
⎯ 31.5 ns Figure 26.26
Write data hold time 4*
2
t
WDH4
2 ⎯ ns Figure 26.26