HD6433044 Datasheet, PDF (673/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer

Table 21-4 Bus Timing (cont)
Condition A: V_CC = 2.7 V to 5.5 V, AV_CC = 2.7 V to 5.5 V, V_REF = 2.7 V to AV_CC,
V_SS = AV_SS = 0 V, ø = 1 MHz to 8 MHz, T_a = –20°C to +75°C (regular
specifications), T_a = –40°C to +85°C (wide-range specifications)
Condition B: V_CC = 3.15 V to 5.5 V, AV_CC = 3.15 V to 5.5 V, V_REF = 3.15 V to AV_CC,
V_SS = AV_SS = 0 V, ø = 1 MHz to 13 MHz, T_a = –20°C to +75°C (regular
specifications), T_a = –40°C to +85°C (wide-range specifications)
Condition C: V_CC = 5.0 V ± 10%, AV_CC = 5.0 V ± 10%, V_REF = 4.5 V to AV_CC,
V_SS = AV_SS = 0 V, ø = 1 MHz to 18 MHz, T_a = –20°C to +75°C (regular
specifications), T_a = –40°C to +85°C (wide-range specifications)
Condition A Condition B
Condition C
8 MHz
13 MHz
16 MHz
18 MHz
Item
Symbol Min Max Min Max Min Max Min Max
Write data delay time t_WDD — 75 — 75 — 60 — 55
Write data setup time 1 t_WDS1 60 — 20 — 15 — 10 —
Write data setup time 2 t_WDS2 5
— –10 — –5 — –10 —
Write data hold time t_WDH 25 — 15 — 20 — 20 —
Read data access
time 1
t_ACC1* — 120 — 60 — 60 — 50
Read data access
time 2
t_ACC2* — 240 — 140 — 120 — 105
Read data access
time 3
t_ACC3* — 70 — 30 — 30 — 20
Read data access
time 4
t_ACC4* — 180 — 100 — 95 — 80
Precharge time
t_PCH* 85 — 55 — 45 — 40 —
Wait setup time
t_WTS
40 — 40 — 25 — 25 —
Wait hold time
t_WTH
10 — 10 — 5
—5
—
Bus request setup ime t_BRQS 40 — 40 — 40 — 40 —
Bus acknowledge
delay time 1
t_BACD1 — 60 — 50 — 30 — 30
Bus acknowledge
delay time 2
t_BACD2 — 60 — 50 — 30 — 30
Bus-floating time
t_BZD
Note is on next page.
— 70 — 70 — 40 — 40
Test
Unit Conditions
ns Figure 21-7,
Figure 21-8
ns Figure 21-9
ns Figure 21-21
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