MAC7101 datasheet(33/56 Pages) FREESCALE

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ElectricalCharacteristics

MAC7100 Microcontroller Family Hardware Specifications, Rev. 1.2

Preliminary

Freescale Semiconductor

3.13.3 Page Erase Timing

The time required to erase a 4 Kbyte program or 1 Kbyte data Flash logical page is calculated using the

formulas:

Eqn. 22

Eqn. 23

3.13.4 Page Erase Verify Timing

The time required to verify that a program Flash page is erased depends on the location of the first

non-blank word. The time required for the operation is calculated using the formula:

Eqn. 24

The time required to verify that a data Flash page is erased is calculated using the formula:

Eqn. 25

3.13.5 Programming Timing

Programming time is dependant on the fIPS and fNVMOP frequencies, and is calculated for a single word

using the formula:

Eqn. 26

Burst programming can be utilized with the program Flash, where up to 32 words in a row can be

programmed consecutively by keeping the command pipeline filled. The time to program a consecutive

word is calculated using the formula:

Eqn. 27

Therefore, the time to program a 32-word row is calculated using the formula:

Eqn. 28

Note that burst programming is more than 2 times faster than single word programming.

3.13.6 Data Signature Timing1

The time required to perform a data signature command is dependant on the number of words or

half-words compressed during the operation, and is calculated using the formula:

Eqn. 29

1. This feature is not available on mask set L49P and L47W devices.

erap

4096 t

NVMOP

⋅

IPS

⋅

erad

1024 t

NVMOP

⋅

IPS

⋅

pevp

1024

----------------------

⎝⎠

⎛⎞

IPS

pevd

1024

----------------------

⎝⎠

⎛⎞

IPS

swpgm

NVMOP

⋅

25 t

IPS

⋅

bwpgm

NVMOP

⋅

IPS

⋅

brpgm

swpgm

31 t

bwpgm

⋅

dsig

Words or Half-Words

() t

IPS

⋅

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