mpc5644a Freescale Semiconductor, Inc, mpc5644a Datasheet - Page 114

• Manufacturer Part Number: mpc5644a
• Description: Mpc5644a Microcontroller Data Sheet
• Manufacturer: Freescale Semiconductor, Inc

Electrical characteristics
114
1
2
3
4
5
10
#
6
7
8
9
External Bus and Calibration bus timing specified at f
V
The external bus is limited to half the speed of the internal bus. The maximum external bus frequency is 66 MHz
for 16-bit muxed mode and 33 MHz for non-muxed mode. For The EBI division factor should be set accordingly
based on the internal frequency being used.
Refer to Fast Pad timing in
Measured at 50% of ALE.
When CAL_TS pad is used for CAL_ALE function the hold time is 1 ns instead of 1.5 ns.
CLKOUT
DDE
Table 40. External bus interface (EBI) and calibration bus operation timing
t
t
t
t
APW
t
Symbol
COV
CIS
CIH
AAI
= 3 V to 3.6 V (unless stated otherwise), T
CC
CC
CC
CC
CC
C
P CLKOUT Posedge to Output Signal Valid
P Input Signal Valid to CLKOUT Posedge
P CLKOUT Posedge to Input Signal Invalid
P ALE Pulse Width
P ALE Negated to Address Invalid
Vol_f
(Output Delay)
ADDR[8:31]
CS[0:3]
DATA[0:31]
OE
RD_WR
TS
WE[0:3]/BE[0:3]
(Setup Time)
DATA[0:31]
(Hold Time)
DATA[0:31]
Table 32
Preliminary—Subject to Change Without Notice
MPC5644A Microcontroller Data Sheet, Rev. 4
Characteristic
Voh_f
4
and
4
3
Figure 18. CLKOUT timing
Table 33
A
= T
(different values for 1.8 V vs. 3.3 V).
4
SYS
L
to T
= 150 MHz and 100 MHz, V
H
, and C
66 MHz (ext. bus)
1.5
Min
6.0
1.0
6.5
—
L
5
= 30 pF with DSC = 0b10.
2
Max
—
—
—
—
9
1
2
DD
Unit
ns
ns
ns
ns
ns
= 1.14 V to 1.32 V,
2
1
Freescale Semiconductor
(continued)
Notes
VDDE/2