Datasheet

MPC852T PowerQUICC™ Hardware Specifications, Rev. 4
Freescale Semiconductor 15
Bus Signal Timing
B3 CLKOUT pulse width high (MIN = 0.4 × B1,
MAX = 0.6 × B1)
12.1 18.2 10.0 15.0 8.0 12.0 6.1 9.1 ns
B4 CLKOUT rise time — 4.00 — 4.00 — 4.00 — 4.00 ns
B5 CLKOUT fall time — 4.00 — 4.00 — 4.00 — 4.00 ns
B7 CLKOUT to A(0:31), BADDR(28:30),
RD/WR
, BURST, D(0:31), DP(0:3) output
hold (MIN = 0.25 × B1)
7.60 — 6.30 — 5.00 — 3.80 — ns
B7a CLKOUT to TSIZ(0:1), REG
, RSV, BDIP,
PTR output hold (MIN = 0.25 × B1)
7.60 — 6.30 — 5.00 — 3.80 — ns
B7b CLKOUT to BR
, BG, FRZ, VFLS(0:1),
VF(0:2) IWP(0:2), LWP(0:1), STS
output
hold (MIN = 0.25 × B1)
7.60 — 6.30 — 5.00 — 3.80 — ns
B8 CLKOUT to A(0:31), BADDR(28:30)
RD/WR
, BURST, D(0:31), DP(0:3) valid
(MAX = 0.25 × B1 + 6.3)
— 13.80 — 12.50 — 11.30 — 10.00 ns
B8a CLKOUT to TSIZ(0:1), REG
, RSV, BDIP,
PTR valid (MAX = 0.25 × B1 + 6.3)
— 13.80 — 12.50 — 11.30 — 10.00 ns
B8b CLKOUT to BR
, BG, VFLS(0:1), VF(0:2),
IWP(0:2), FRZ, LWP(0:1), STS
Valid
3
(MAX = 0.25 × B1 + 6.3)
— 13.80 — 12.50 — 11.30 — 10.00 ns
B9 CLKOUT to A(0:31), BADDR(28:30),
RD/WR
, BURST, D(0:31), DP(0:3),
TSIZ(0:1), REG
, RSV, PTR High-Z
(MAX = 0.25 × B1 + 6.3)
7.60 13.80 6.30 12.50 5.00 11.30 3.80 10.00 ns
B11 CLKOUT to TS
, BB assertion
(MAX = 0.25 × B1 + 6.0)
7.60 13.60 6.30 12.30 5.00 11.00 3.80 9.80 ns
B11a CLKOUT to TA
, BI assertion (when driven
by the memory controller or PCMCIA
interface) (MAX = 0.00 × B1 + 9.30
2
)
2.50 9.30 2.50 9.30 2.50 9.30 2.50 9.80 ns
B12 CLKOUT to TS
, BB negation
(MAX = 0.25 × B1 + 4.8)
7.60 12.30 6.30 11.00 5.00 9.80 3.80 8.50 ns
B12a CLKOUT to TA
, BI negation (when driven
by the memory controller or PCMCIA
interface) (MAX = 0.00 × B1 + 9.00)
2.50 9.00 2.50 9.00 2.50 9.00 2.50 9.00 ns
B13 CLKOUT to TS
, BB High-Z
(MIN = 0.25 × B1)
7.60 21.60 6.30 20.30 5.00 19.00 3.80 14.00 ns
B13a CLKOUT to TA
, BI High-Z (when driven by
the memory controller or PCMCIA
interface) (MIN = 0.00 × B1 + 2.5)
2.50 15.00 2.50 15.00 2.50 15.00 2.50 15.00 ns
B14 CLKOUT to TEA
assertion
(MAX = 0.00 × B1 + 9.00)
2.50 9.00 2.50 9.00 2.50 9.00 2.50 9.00 ns
Table 9. Bus Operation Timings (continued)
Num Characteristic
33 MHz 40 MHz 50 MHz 66 MHz
Unit
Min Max Min Max Min Max Min Max