MCF5271EC Datasheet, PDF (38/56 Pages) Freescale Semiconductor, Inc – 32-bit Embedded Controller Division

Preliminary Electrical Characteristics
Timings listed in Table 30 are shown in Figure 6 & Figure A-3.
* The timings are also valid for inputs sampled on the negative clock edge.
CLKOUT(75MHz)
1.5V
T_SETUP
T_HOLD
Input Setup And Hold
Invalid
1.5V Valid 1.5V
Invalid
Input Rise Time
CLKOUT
Input Fall Time
B4
Inputs
V_h = V_IH
V_l = V_IL
V_h = V_IH
V_l = V_IL
trise
tfall
B5
Figure 6. General Input Timing Requirements
8.6 Processor Bus Output Timing Specifications
Table 31 lists processor bus output timings.
Table 31. External Bus Output Timing Specifications
Name
Characteristic
Symbol
Min
Control Outputs
B6a
CLKOUT high to chip selects valid ¹
t_CHCV
—
Max
Unit
0.5t_CYC +5
ns
B6b
CLKOUT high to byte enables (BS[3:0]) valid²
t_CHBV
—
0.5t_CYC +5
ns
B6c
CLKOUT high to output enable (OE) valid³
t_CHOV
—
0.5t_CYC +5
ns
B7
CLKOUT high to control output (BS[3:0], OE) invalid t_CHCOI 0.5t_CYC+1.5
—
ns
B7a
CLKOUT high to chip selects invalid
t_CHCI
0.5t_CYC+1.5
—
ns
MCF5271 Integrated Microprocessor Hardware Specification, Rev. 1.2
38
Freescale Semiconductor