Motorola PowerPC 603 Hardware Specifications page 10

1.4.2.3 Output AC Specifications
Table 8 provides the output AC timing specifications for the 603 as defined in Figure 4.
Vdd = 3.3 ± 5% V dc, GND = 0 V dc, CL = 50 pF, 0 ≤ T
Num
12 SYSCLK to output driven (output enable time)
13a SYSCLK to output valid (5.5 V to 0.8 V— TS,
ABB, ARTRY, DBB)
13b SYSCLK to output valid (TS, ABB, ARTRY, DBB)
14a SYSCLK to output valid (5.5 V to 0.8 V— all
except TS, ABB, ARTRY, DBB)
14b SYSCLK to output valid (all except TS, ABB,
ARTRY, DBB)
15 SYSCLK to output invalid (output hold)
16 SYSCLK to output high impedance (all except
ARTRY, ABB, DBB)
17 SYSCLK to ABB, DBB, high impedance after
precharge
18 SYSCLK to ARTRY high impedance before
precharge
19 SYSCLK to ARTRY precharge enable
20 Maximum delay to ARTRY precharge
21 SYSCLK to ARTRY high impedance after
precharge
Notes:
1. All output specifications are measured from the 1.4 V of the rising edge of SYSCLK to the TTL level (0.8 V or 2.0 V)
of the signal in question. Both input and output timings are measured at the pin
2. All maximum timing specifications assume C
3. This minimum parameter assumes C
4. SYSCLK to output valid (5.5 V to 0.8 V) includes the extra delay associated with discharging the external voltage
from 5.5 V to 0.8 V instead of from Vdd to 0.8 V (5 V CMOS levels instead of 3.3 V CMOS levels).
5. t is the period of the external bus clock (SYSCLK) in nanoseconds (ns). The numbers given in the table must be
sysclk
multiplied by the period of SYSCLK to compute the actual time duration (in nanoseconds) of the parameter in
question.
6. Output signal transitions from GND to 2.0 V or Vdd to 0.8 V.
7. Nominal precharge width for ABB and DBB is 0.5 t
8. Nominal precharge width for ARTRY is 1.0 t
10
Table 8. Output AC Timing Specifications
≤ 105 °C
j
Characteristic
= 0 pF.
L
sysclk
66C
Min Max Min
1.0 — 1.0
— 13.0 —
— 12.0 —
— 15.0 —
— 13.0 —
1.5 — 1.5
— 11.5 —
— 1.0 —
— 11.0 —
0.2 — 0.2
*
t t
sysclk sysclk
+ 1.0 + 1.0
— 1.0 —
— 2.0 —
= 50 pF.
L
.
sysclk
.
1
66A 80C
Max Min Max
— 1.0 —
10.0 — 12.0
9.0 — 11.0
12.0 — 14.0
10.0 — 12.0
— 1.5 —
8.5 — 10.5
1.2 — 1.0
8.0 — 10.0
— 0.2 —
* *
t
sysclk
+ 1.0
1.2 — 1.0
2.25 — 2.0
603 Hardware Specifications
Unit Notes
ns
ns 4
ns 6
ns 4
ns 6
ns 3
ns
t 5,7
sysclk
ns
ns 3,5,8
t 5,8
sysclk
t 5,8
sysclk