r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 1299

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Table 27.22 Bus Timing (2)
Conditions: V
Item
WR delay time 1
WR delay time 2
WR pulse width 1
WR pulse width 2
Write data delay time
Write data setup time 1
Write data setup time 2
Write data setup time 3
Write data hold time 1
Write data hold time 2
Write data hold time 3
Write command setup time 1
Write command setup time 2
Write command hold time 1
Write command hold time 2
Read command setup time 1
Read command setup time 2
Read command hold time
CAS delay time 1
CAS delay time 2
CAS setup time 1
CAS setup time 2
CAS pulse width 1
CAS pulse width 2
CAS precharge time 1
CAS precharge time 2
0 V, φ = 8 MHz to 33 MHz, T
T
a
CC
= −40°C to +85°C (wide-range specifications)
= 3.0 V to 3.6 V, AV
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
WRD1
WRD2
WSW1
WSW2
WDD
WDS1
WDS2
WDS3
WDH1
WDH2
WDH3
WCS1
WCS2
WCH1
WCH2
RCS1
RCS2
RCH
CASD1
CASD2
CSR1
CSR2
CASW1
CASW2
CPW1
CPW2
CC
= 3.0 V to 3.6 V, V
a
= −20°C to +75°C (regular specifications),
Min.


1.0 × t
1.5 × t

0.5 × t
1.0 × t
1.5 × t
0.5 × t
1.0 × t
1.5 × t
0.5 × t
1.0 × t
0.5 × t
1.0 × t
1.5 × t
2.0 × t
0.5 × t


0.5 × t
1.5 × t
1.0 × t
1.5 × t
1.0 × t
1.5 × t
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc
−13
−13
−15
−15
−15
−13
−13
−13
−10
−10
−10
−10
−10
−10
−10
−10
−10
−20
−20
−20
−20
Rev. 1.00 Sep. 19, 2008 Page 1269 of 1342
Max.
15
15


23













15
15






ref
= 3.0 V to AV
Section 27 Electrical Characteristics
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CC
, V
SS
REJ09B0467-0100
Test Conditions
Figures 27.8 to
27.23,
Figures 27.34
and 27.35
= AV
SS
=