Datasheet
Section 25 Electrical Characteristics 
Page 1222 of 1384    R01UH0310EJ0500 Rev. 5.00 
 Sep 25, 2012 
H8S/2426, H8S/2426R, H8S/2424 Group
(3)  Bus Timing 
Table 25.7  Bus Timing (1) 
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 
Address delay time  t
AD
  ⎯ 20 ns 
Address setup time 1  t
AS1
 0.5 × t
cyc
 −13 ⎯ ns 
Address setup time 2  t
AS2
 1.0 × t
cyc
 −13 ⎯ ns 
Address setup time 3  t
AS3
 1.5 × t
cyc
 −13 ⎯ ns 
Address setup time 4  t
AS4
 2.0 × t
cyc
 −13 ⎯ ns 
Address hold time 1  t
AH1
 0.5 × t
cyc
 −8  ⎯ ns 
Address hold time 2  t
AH2
 1.0 × t
cyc
 −8  ⎯ ns 
Address hold time 3  t
AH3
 1.5 × t
cyc
 −8  ⎯ ns 
CS delay time 1  t
CSD1
  ⎯ 15 ns 
CS delay time 2  t
CSD2
  ⎯ 15 ns 
CS delay time 3  t
CSD3
  ⎯ 20 ns 
AS delay time  t
ASD
  ⎯ 15 ns 
RD delay time 1  t
RSD1
  ⎯ 15 ns 
RD delay time 2  t
RSD2
  ⎯ 15 ns 
Read data setup time 1  t
RDS1
 15  ⎯ ns 
Read data setup time 2  t
RDS2
 15  ⎯ ns 
Read data hold time 1  t
RDH1
 0  ⎯ ns 
Read data hold time 2  t
RDH2
 0  ⎯ ns 
Read data access time 1  t
AC1
  ⎯ 1.0 × t
cyc
 − 25 ns 
Read data access time 2  t
AC2
  ⎯ 1.5 × t
cyc
 − 25 ns 
Read data access time 3  t
AC3
  ⎯ 2.0 × t
cyc
 − 25 ns 
Read data access time 4  t
AC4
  ⎯ 2.5 × t
cyc
 − 25 ns 
Read data access time 5  t
AC5
  ⎯ 1.0 × t
cyc
 − 25 ns 
Read data access time 6  t
AC6
  ⎯ 2.0 × t
cyc
 − 25 ns 
Read data access time 7  t
AC7
  ⎯ 4.0 × t
cyc
 − 25 ns 
Read data access time 8  t
AC8
  ⎯ 3.0 × t
cyc
 − 25 ns 
Figures 25.8 to 
25.23, 25.29 
and 25.30 










