SH7014 Datasheet, PDF (600/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

22. Electrical Characteristics (5 V 28.7 MHz)
22.3.3 Bus Timing
Table 22.6 Bus Timing
Conditions: V_CC = 5.0 V ±10%, AV_CC = V_CC ±10%, AV_CC = 5.0 V ±10%, V_SS = AV_SS = 0 V,
Ta = −20 to +75°C
Item
Address delay time
CS delay time 1
CS delay time 2
Read strobe delay time 1
Read strobe delay time 2
Read data setup time
Read data hold time
Write strobe delay time 1
Write strobe delay time 2
Write data delay time
Write data hold time
WAIT setup time
WAIT hold time
RAS delay time 1
RAS delay time 2
CAS delay time 1
CAS delay time 2
Read data access time
Access time from read strobe
Access time from column
address
Access time from RAS
Access time from CAS
Row address hold time
Row address setup time
Data input setup time
Data input hold time
Symbol Min
t_AD
2*³
t
CSD1
t
CSD2
t
RSD1
t_RSD2
t_RDS*⁴
t
RDH
t
WSD1
t
WSD2
t_WDD
t_WDH
t
WTS
t
WTH
t
RASD1
t_RASD2
t_CASD1
t
CASD2
t_ACC*¹
t_OE*¹
t_AA*¹
2*³
2*³
2*³
2*³
15
0
2*³
2*³
⎯
0
15
0
2*³
2*³
2*³
2*³
t × (n + 2) − 40
cyc
t × (n + 1.5) − 40
cyc
t_cyc × (n + 2) − 40
Max Unit Figure
18 ns 22.6, 22.7,
22.9 to 22.14,
22.17
21 ns 22.6, 22.7, 22.17
21 ns
18 ns 22.6, 22.7,
18 ns ^{22.9 to 22.14,}
22.17
⎯ ns
⎯ ns
18 ns
18 ns
35 ns
10*² ns
⎯ ns 22.8, 22.13,
⎯ ns ^22.17
18 ns 22.9 to 22.16
18 ns
18 ns
18 ns
⎯ ns 22.6, 22.7
⎯ ns
⎯ ns 22.9 to 22.14
t_RAC*¹
t_CAC*¹
t
RAH
t_ASR*⁵
t_DS
t
DH
t × (n + RCD + 2.5) − 40 ⎯ ns
cyc
t × (n + 1) − 40
cyc
⎯ ns
t × (RCD + 0.5) − 15
cyc
⎯ ns
t_cyc × 0.5 − 17.5
⎯ ns
t_cyc × (m + 0.5) − 25
⎯ ns
20
⎯ ns
Rev.5.00 Sep. 27, 2007 Page 566 of 716
REJ09B0398-0500