PXR40 Datasheet, PDF (71/100 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

5.10 C90 flash memory electrical characteristics
Electrical characteristics
Table 22. Flash program and erase specifications
Spec
Characteristic
Symbol
Min
Typ¹
Initial
Max²
Max³ Unit
1 Double Word (64 bits) Program Time⁴
2 Page Program Time^4,5
t_dwprogram
—
t_pprogram
—
38
—
500 s
45
160
500
s
3 16 KB Block Pre-program and Erase Time
t_16kpperase
—
270 1000 5000 ms
4 64 KB Block Pre-program and Erase Time
t_64kpperase
—
800 1800 5000 ms
5 128 KB Block Pre-program and Erase Time
t_128kpperase
—
1500 2600 7500 ms
6 256 KB Block Pre-program and Erase Time
t_256kpperase
—
3000 5200 15000 ms
1 _{Typical program and erase times assume nominal supply values and operation at 25} o_C.
2 _{Initial factory condition:  100 program/erase cycles, 25} o_{C, typical supply voltage, 80 MHz minimum system frequency.}
3 _{The maximum erase time occurs after the specified number of program/erase cycles. This maximum value is characterized}
but not guaranteed.
4 _{Program times are actual hardware programming times and do not include software overhead.}
5 _{Page size is 128 bits (4 words).}
Table 23. Flash EEPROM module life
Spec
Characteristic
Symbol
Min
Typical¹
Unit
1 Number of program/erase cycles per block for 16 KB and 64
P/E
100,000
—
KB blocks over the operating temperature range (T_J)
cycles
2 Number of program/erase cycles per block for 128 KB and 256
P/E
KB blocks over the operating temperature range (T_J)
3 Minimum Data Retention at 85 °C ambient temperature²
Retention
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
1,000
20
10
5
100,000
—
—
—
cycles
years
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.
2 _{Ambient temperature averaged over duration of application, not to exceed product operating temperature range.}
Table 24 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.
PXR40 Microcontroller Data Sheet, Rev. 1
Freescale Semiconductor
71