Datasheet
Section 25 Electrical Characteristics 
Page 1292 of 1384    R01UH0310EJ0500 Rev. 5.00 
 Sep 25, 2012 
H8S/2426, H8S/2426R, H8S/2424 Group
(5)  Timing of On-Chip Peripheral Modules 
Table 25.35  Timing of On-Chip Peripheral Modules 
Conditions: V
CC
 = 4.5 V to 5.5 V, AV
CC
 = 4.5 V to 5.5 V, V
ref
 = 4.5 V to AV
CC
, V
SS
 = AV
SS
 = 0 V, 
φ = 8 MHz to 33 MHz 
Item  Symbol Min. Max. Unit Test Conditions 
I/O ports  Output data delay time  t
PWD
  ⎯ 40 ns Figure 25.74 
  Input data setup time  t
PRS
 25  ⎯ ns  
  Input data hold time  t
PRH
 25  ⎯ ns  
PPG  Pulse output delay time  t
POD
  ⎯ 40 ns Figure 25.75 
TPU  Timer output delay time  t
TOCD
  ⎯ 40 ns Figure 25.76 
  Timer input setup time  t
TICS
 25  ⎯ ns  
  Timer clock input setup time  t
TCKS
 25  ⎯ ns Figure 25.77 
 Timer clock 
pulse width 
Single-edge 
specification 
t
TCKWH
 1.5  ⎯ t
cyc
  Both-edge 
specification 
t
TCKWL
 2.5  ⎯ t
cyc
8-bit timer  Timer output delay time  t
TMOD
  ⎯ 40 ns Figure 25.78 
  Timer reset input setup time  t
TMRS
 25  ⎯ ns Figure 25.80 
  Timer clock input setup time  t
TMCS
 25  ⎯ ns Figure 25.79 
 Timer clock 
pulse width 
Single-edge 
specification 
t
TMCWH
 1.5  ⎯ t
cyc
  Both-edge 
specification 
t
TMCWL
 2.5  ⎯ t
cyc
WDT  Overflow output delay time  t
WOVD
  ⎯ 40 ns Figure 25.81 
SCI Asynchronous t
Scyc
 4  ⎯ t
cyc
 Figure 25.82 
Input clock 
cycle 
Synchronous  6  ⎯  
  Input clock pulse width  t
SCKW
 0.4  0.6  t
Scyc
  Input clock rising time  t
SCKr
  ⎯ 1.5 t
cyc
  Input clock falling time  t
SCKf
  ⎯ 1.5   
  Transmit data delay time  t
TXD
  ⎯ 40 ns Figure 25.83 
  Receive data setup time 
(synchronous) 
t
RXS
 40  ⎯ ns  
  Receive data hold time 
(synchronous) 
t
RXH
 40  ⎯ ns  










