Datasheet
Section 25 Electrical Characteristics 
Page 1224 of 1384    R01UH0310EJ0500 Rev. 5.00 
 Sep 25, 2012 
H8S/2426, H8S/2426R, H8S/2424 Group
Table 25.8 Bus Timing (2) 
Conditions: V
CC
 = 3.0 V to 3.6 V, AV
CC
 = 3.0 V to 3.6 V, V
ref
 = 3.0 V to AV
CC
, V
SS
 = AV
SS
 = 0 V, 
φ = 8 MHz to 33 MHz 
Item Symbol Min. Max. Unit 
Test 
Conditions 
WR delay time 1  t
WRD1
  ⎯ 15 ns 
WR delay time 2  t
WRD2
  ⎯ 15 ns 
WR pulse width 1  t
WSW1
 1.0 × t
cyc
 −13  ⎯ ns 
WR pulse width 2  t
WSW2
 1.5 × t
cyc
 −13  ⎯ ns 
Figures 25.8 to 
25.23, 25. 29 
and 25.30 
Write data delay time  t
WDD
  ⎯ 23 ns  
Write data setup time 1  t
WDS1
 0.5 × t
cyc
 −15  ⎯ ns  
Write data setup time 2  t
WDS2
 1.0 × t
cyc
 −15  ⎯ ns  
Write data setup time 3  t
WDS3
 1.5 × t
cyc
 −15  ⎯ ns  
Write data hold time 1  t
WDH1
 0.5 × t
cyc
 −13  ⎯ ns  
Write data hold time 2  t
WDH2
 1.0 × t
cyc
 −13  ⎯ ns  
Write data hold time 3  t
WDH3
 1.5 × t
cyc
 −13  ⎯ ns  
Write command setup time 1  t
WCS1
 0.5 × t
cyc
 −10  ⎯ ns 
Write command setup time 2  t
WCS2
 1.0 × t
cyc
 −10  ⎯ ns 
Write command hold time 1  t
WCH1
 0.5 × t
cyc
 −10  ⎯ ns 
Write command hold time 2  t
WCH2
 1.0 × t
cyc
 −10  ⎯ ns 
Read command setup time 1  t
RCS1
 1.5 × t
cyc
 −10  ⎯ ns 
Read command setup time 2  t
RCS2
 2.0 × t
cyc
 −10  ⎯ ns 
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 










