Datasheet

Electrical Characteristics
MPC5566 Microcontroller Data Sheet, Rev. 3
Freescale
33
3.13.4 External Bus Interface (EBI) Timing
Table 22 lists the timing information for the external bus interface (EBI).
Table 22. Bus Operation Timing
1
Spec
Characteristic
and
Description
Symbol
External Bus Frequency
2, 3
Unit
Notes
40 MHz 56 MHz 67 MHz 72 MHz
Min Max Min Max Min Max Min Max
1 CLKOUT period T
C
25.0 — 17.9 — 15.2 — 13.3 — ns
Signals are
measured at 50%
V
DDE
.
2 CLKOUT duty cycle t
CDC
45% 55% 45% 55% 45% 55% 45% 55% T
C
3 CLKOUT rise time t
CRT
——
4
——
4
——
4
——
4
ns
4 CLKOUT fall time t
CFT
——
4
——
4
——
4
——
4
ns
5
CLKOUT positive edge to
output signal invalid or
Hi-Z (hold time)
External bus interface
CS
[0:3]
ADDR[8:31]
DATA[0:31]
BDIP
BG
5
BR
7
BB
OE
RD_WR
TA
TEA
TS
TSIZ[0:1]
WE/BE[0:3]
t
COH
1.0
6
1.5
—
1.0
6
1.5
—
1.0
6
1.5
—
1.0
6
1.5
—ns
EBTS = 0
EBTS = 1
Hold time selectable
via SIU_ECCR
[EBTS] bit.
CLKOUT positive edge to
output signal invalid or
Hi-Z (hold time)
Calibration bus interface
CAL_CS
[0:3]
CAL_ADDR[9:30]
CAL_DATA[0:15]
CAL_OE
CAL_RD_WR
CAL_TS
CAL_WE/BE[0:1]
t
CCOH
1.0
6
1.5
—
1.0
6
1.5
—
1.0
6
1.5
—
1.0
6
1.5
—ns
EBTS = 0
EBTS = 1
Hold time selectable
via SIU_ECCR
[EBTS] bit.