Datasheet

MPC852T PowerQUICC™ Hardware Specifications, Rev. 4
16 Freescale Semiconductor
Bus Signal Timing
B15 CLKOUT to TEA High-Z
(MIN = 0.00 × B1 + 2.50)
2.50 15.00 2.50 15.00 2.50 15.00 2.50 15.00 ns
B16 TA
, BI valid to CLKOUT (setup time)
(MIN = 0.00 × B1 + 6.00)
6.00 — 6.00 — 6.00 — 6.00 — ns
B16a TEA
, KR, RETRY, CR valid to CLKOUT
(setup time) (MIN = 0.00 × B1 + 4.5)
4.50 — 4.50 — 4.50 — 4.50 — ns
B16b BB
, BG, BR, valid to CLKOUT (setup time)
3
(4MIN = 0.00 × B1 +.000)
4.00 — 4.00 — 4.00 — 4.00 — ns
B17 CLKOUT to TA
, TEA, BI, BB, BG, BR valid
(hold time) (MIN = 0.00 × B1 + 1.00
4
)
1.00 — 1.00 — 1.00 — 2.00 — ns
B17a CLKOUT to KR
, RETRY, CR valid (hold
time) (MIN = 0.00 × B1 + 2.00)
2.00 — 2.00 — 2.00 — 2.00 — ns
B18 D(0:31), DP(0:3) valid to CLKOUT rising
edge (setup time)
5
(MIN = 0.00 × B1 + 6.00)
6.00 — 6.00 — 6.00 — 6.00 — ns
B19 CLKOUT rising edge to D(0:31), DP(0:3)
valid (hold time)
5
(MIN = 0.00 × B1 + 1.00
6
)
1.00 — 1.00 — 1.00 — 2.00 — ns
B20 D(0:31), DP(0:3) valid to CLKOUT falling
edge (setup time)
7
(MIN = 0.00 × B1 + 4.00)
4.00 — 4.00 — 4.00 — 4.00 — ns
B21 CLKOUT falling edge to D(0:31), DP(0:3)
valid (hold Time)
7
(MIN = 0.00 × B1 + 2.00)
2.00 — 2.00 — 2.00 — 2.00 — ns
B22 CLKOUT rising edge to CS
asserted
GPCM ACS = 00 (MAX = 0.25 × B1 + 6.3)
7.60 13.80 6.30 12.50 5.00 11.30 3.80 10.00 ns
B22a CLKOUT falling edge to CS
asserted
GPCM ACS = 10, TRLX = 0
(MAX = 0.00 × B1 + 8.00)
— 8.00 — 8.00 — 8.00 — 8.00 ns
B22b CLKOUT falling edge to CS
asserted
GPCM ACS = 11, TRLX = 0, EBDF = 0
(MAX = 0.25 × B1 + 6.3)
7.60 13.80 6.30 12.50 5.00 11.30 3.80 10.00 ns
B22c CLKOUT falling edge to CS
asserted
GPCM ACS = 11, TRLX = 0, EBDF = 1
(MAX = 0.375 × B1 + 6.6)
10.90 18.00 10.90 16.00 7.00 14.10 5.20 12.30 ns
B23 CLKOUT rising edge to CS
negated
GPCM read access, GPCM write access
ACS = 00, TRLX = 0 & CSNT = 0
(MAX = 0.00 × B1 + 8.00)
2.00 8.00 2.00 8.00 2.00 8.00 2.00 8.00 ns
B24 A(0:31) and BADDR(28:30) to CS
asserted GPCM ACS = 10, TRLX = 0
(MIN = 0.25 × B1 – 2.00)
5.60 — 4.30 — 3.00 — 1.80 — 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