SH7020 Datasheet, PDF (485/509 Pages) Renesas Technology Corp – SuperH™ RISC engine

Table 19.8 Bus Timing (3) (cont)
Conditions: V_CC = 3.0 to 5.5 V, V_SS = 0 V, φ = 12.5 MHz, Ta = –20 to +75°C*
*: Normal products. Ta = –40 to +85°C for wide-temperature range products.
Item
Wait setup time
Wait hold time
Read data access time 1^*4
Read data access time 2^*4
Symbol Min
t_WTS
t_WTH
t_ACC1
t_ACC2
40
10
t_cyc – 44
t_cyc × (n+2) – 44^*2
RAS delay time 1
t_RASD1
RAS delay time 2
t_RASD2
CAS delay time 1
t_CASD1
CAS delay time 2
t_CASD2
CAS delay time 3
t_CASD3
Column address setup time t_ASC
Read data
35% duty^*1 t_CAC1
access time from _{50% duty}
CAS 1*4
Read data access time from t_CAC2
CAS 2^*4
Read data access time from t_RAC1
RAS 1^*4
Read data access time from t_RAC2
RAS 2^*4
High-speed page mode CAS t_CP
precharge time
AH delay time 1
AH delay time 2
Multiplexed address delay
time
t_AHD1
t_AHD2
t_MAD
Multiplexed address hold
time
t_MAH
—
—
—
—
—
0
t_cyc × 0.65 – 35
t_cyc × 0.5 – 35
t_cyc × (n+1) – 35^*2
t_cyc × 1.5 – 35
t_cyc × (n+2.5) – 35^*2
t_cyc × 0.25
—
—
—
–10
Max
—
—
—
—
40
40
40
40
40
—
—
—
—
—
—
—
40
40
40
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Figures
19.23, 19.28, 19.32
19.21, 19.24, 19.25
19.22, 19.23, 19.26,
19.28
19.24–19.27, 19.29–
19.31
19.24
19.26, 19.27, 19.29–
19.31
19.24, 19.25
19.26, 19.27, 19.28
19.24, 19.25
19.26, 19.27, 19.28
19.25
19.32
RENESAS 475