PXR40 datasheet(71/100 Pages) FREESCALE

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Electrical characteristics

PXR40 Microcontroller Data Sheet, Rev. 1

Freescale Semiconductor

5.10

C90 flash memory electrical characteristics

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.

Table 22. Flash program and erase specifications

Spec

Characteristic

Symbol

Min

Typ1

1 Typical program and erase times assume nominal supply values and operation at 25 oC.

Initial

Max2

2 Initial factory condition:

 100 program/erase cycles, 25 oC, typical supply voltage, 80 MHz minimum system frequency.

Max3

3 The maximum erase time occurs after the specified number of program/erase cycles. This maximum value is characterized

but not guaranteed.

Unit

Double Word (64 bits) Program Time4

4 Program times are actual hardware programming times and do not include software overhead.

tdwprogram

—

500

s

Page Program Time4,5

5 Page size is 128 bits (4 words).

tpprogram

—

160

500

s

16 KB Block Pre-program and Erase Time

t16kpperase

—

270

1000

5000

64 KB Block Pre-program and Erase Time

t64kpperase

—

800

1800

5000

128 KB Block Pre-program and Erase Time

t128kpperase

—

1500

2600

7500

256 KB Block Pre-program and Erase Time

t256kpperase

—

3000

5200

15000

Table 23. Flash EEPROM module life

Spec

Characteristic

Symbol

Min

Typical1

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

Number of program/erase cycles per block for 16 KB and 64

KB blocks over the operating temperature range (TJ)

P/E

100,000

—

cycles

Number of program/erase cycles per block for 128 KB and 256

KB blocks over the operating temperature range (TJ)

P/E

1,000

100,000

cycles

Minimum Data Retention at 85 °C ambient temperature2

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

—

years

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