External Interface Timing Characteristics; Sgfm Flash Module Life Characteristics; Processor Bus Input Timing Specifications - Motorola ColdFire MCF5281 User Manual

External Interface Timing Characteristics

Table 33-9. SGFM Flash Module Life Characteristics
Maximum number of guaranteed program/erase cycles
Data retention at average operating temperature of 85°C
1
A program/erase cycle is defined as switching the bits from 1 → 0 → 1.
2
Reprogramming of a Flash array block prior to erase is not required.
33.7 External Interface Timing Characteristics
Table 33-10 lists processor bus input timings.
All processor bus timings are synchronous; that is, input
setup/hold and output delay with respect to the rising edge of a
reference clock. The reference clock is the CLKOUT output.
All other timing relationships can be derived from these values.
Table 33-10. Processor Bus Input Timing Specifications
Name
B0 CLKOUT
B1a Control input valid to CLKOUT high
B1b BKPT valid to CLKOUT high
B2a CLKOUT high to control inputs invalid
B2b CLKOUT high to asynchronous control input BKPT invalid
B4 Data input (D[31:0]) valid to CLKOUT high
B5 CLKOUT high to data input (D[31:0]) invalid
1
Timing specifications have been indicated taking into account the full drive strength for the pads.
2
TEA and TA pins are being referred to as control inputs.
3
Refer to figure A-19.
33-10
(V = 2.7 to 3.6 V)
DDF
Parameter
1
NOTE:
1
Characteristic
Control Inputs
2
3
2
Data Inputs
MCF5282 User's Manual
Symbol
before failure P/E
Retention
3
Value Unit
2
10,000 Cycles
10 Years
Symbol Min Max
t 12.5 —
CYC
t 10 —
CVCH
t 10 —
BKVCH
t 0 —
CHCII
t 0 —
BKNCH
t 6 —
DIVCH
t 0 —
CHDII
MOTOROLA
Unit
ns
ns
ns
ns
ns
ns
ns