Datasheet
Electrical Characteristics
MPC5674F Microcontroller Data Sheet, Rev. 9
Freescale Semiconductor 41
Table 26 shows the Platform Flash Configuration Register 1 (PFCPR1) settings versus frequency of operation. Refer to the
device reference manual for definitions of these bit fields.
Table 25. Flash EEPROM Module Life
Spec Characteristic Symbol Min Typical
1
1
Typical endurance is evaluated at 25 °C. Product qualification is performed to the minimum specification. For additional
information on the Freescale definition of Typical Endurance, please refer to Engineering Bulletin EB619, Typical Endurance
for Nonvolatile Memory.
Unit
1 Number of program/erase cycles per block for 16 KB and 64
KB blocks over the operating temperature range (T
J
)
P/E 100,000 — cycles
2 Number of program/erase cycles per block for 128 KB and 256
KB blocks over the operating temperature range (T
J
)
P/E 1,000 100,000 cycles
3 Minimum Data Retention at 85 °C ambient temperature
2
Blocks with 0–1,000 P/E cycles
Blocks with 1,001–10,000 P/E cycles
Blocks with 10,001–100,000 P/E cycles
2
Ambient temperature averaged over duration of application, not to exceed product operating temperature range.
Retention
20
10
5
—
—
—
years
Table 26. PFCPR1 Settings vs. Frequency of Operation
1
1
Illegal combinations exist. Use entries from the same row in this table.
Spec
Clock
Mode
Maximum Frequency
2
(MHz)
2
This is the nominal maximum frequency of operation: platform runs at f
sys
/2 in Enhanced Mode .
APC =
RWSC
WWSC DPFEN
3
3
For maximum flash performance, set to 0b1.
IPFEN
3
PFLIM
4
4
For maximum flash performance, set to 0b10.
BFEN
5
5
For maximum flash performance, set to 0b1.
Core
f
sys
Platform
f
platf
1 Enhanced 264 MHz
6
6
This is the nominal maximum frequency of operation in Enchanced Mode. Max speed is the maximum speed
allowed including frequency modulation (FM). 270 MHz parts allow for 264 MHz system core clock(f
sys
)+2% FM
and 132 Mhz platform clock (f
platf
)+ 2% FM.
132 MHz
6
0b011 0b01 0b0
0b1
0b0
0b1
0b00
0b01
0b1x
0b0
0b1
2 Enhanced/
Full
200 MHz 100 MHz 0b010 0b01 0b0
0b1
0b0
0b1
0b00
0b01
0b1x
0b0
0b1
3 Legacy 132 MHz 132 MHz 0b100 0b01 0b0
0b1
0b0
0b1
0b00
0b01
0b1x
0b0
0b1
Default setting after reset: 0b111 0b11 0b00 0b00 0b00 0b0