HD6417021 Hitachi Semiconductor, HD6417021 Datasheet - Page 467

• Manufacturer Part Number: HD6417021
• Description: SuperH RISC engine
• Manufacturer: Hitachi Semiconductor

Table 19.7 Bus Timing (2) (cont)
Conditions: V
*: Normal products. Ta = –40 to +85°C for wide-temperature range products.
Item
Wait setup time
Wait hold time
Read data access time 1
Read data access time 2
RAS delay time 1
RAS delay time 2
CAS delay time 1
CAS delay time 2
CAS delay time 3
Column address setup time
Read data access
time from CAS 1
Read data access time from
CAS 2
Read data access time from
RAS 1
Read data access time from
RAS 2
High-speed page mode CAS
precharge time
AH delay time 1
AH delay time 2
Multiplexed address delay time
Multiplexed address hold time
*6
*6
*6
CC
*6
= 5.0 V ±10%, V
35% duty
50% duty
*6
*6
*2
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
SS
WTS
WTH
ACC1
ACC2
RASD1
RASD2
CASD1
CASD2
CASD3
ASC
CAC1
CAC2
RAC1
RAC2
CP
AHD1
AHD2
MAD
MAH
= 0 V, = 16.6 MHz, Ta = –20 to +75°C*
30
Min
19
10
t
t
—
—
—
—
—
0
t
19
t
t
25
t
t
– 20
t
—
—
—
0
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc
*3
*3
– 30*
*3
(n+2) –
0.65 –
0.5 – 19
(n + 1) –
1.5 – 20
(n + 2.5)
0.25
4
Max
—
—
—
—
25
35
25
25
25
—
—
—
—
—
—
—
25
25
30
—
Unit Figures
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
19.10, 19.15, 19.19
19.8, 19.11, 19.12
19.9, 19.10, 19.13,
19.14
19.11–19.14,
19.16–19.18
19.11
19.13, 19.14,
19.16–19.18
19.11, 19.12
19.13, 19.14, 19.15
19.11, 19.12
19.13, 19.14, 19.15
19.12
19.19
HITACHI 459