MAC7100 datasheet(34/48 Pages) MOTOROLA

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MAC7100 Microcontroller Family Hardware Specifications

MOTOROLA

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

Electrical Characteristics

3.13.1.3 Sector Erase

Erasing a 4k byte Flash sector takes:

The setup time can be ignored for this operation.

3.13.1.4 Mass Erase

Erasing a NVM block takes:

The setup time can be ignored for this operation.

3.13.1.5 Blank Check

The time it takes to perform a blank check on the Flash or Data Flash is dependant on the location of the

first non-blank word starting at relative address zero. It takes one bus cycle per word to verify plus a setup

of the command.

Table 36. NVM Timing Characteristics 1

1 Conditions are shown in Table 6 unless otherwise noted

Num C

Rating

Symbol

Min

Typ

Max

Unit

D System Clock/2

fNVMfsys

0.5

—

50 2

2 Restrictions for oscillator in crystal mode apply!

MHz

D Bus frequency for Programming or Erase Operations fNVMBUS

1—

—

MHz

D Operating Frequency

fNVMOP

150

—

200

kHz

P Single Word Programming Time

tswpgm

46 3

3 Minimum programming times are achieved under maximum NVM operating frequency fNVMOP and maximum bus frequency fbus.

—74.5 4

4 Maximum erase and programming times are achieved under particular combinations of fNVMOP and bus frequency

fbus. Refer to formulae in Section 3.13.1.1, “Single Word Programming,” through Section 3.13.1.4, “Mass Erase,” for

more information.

µs

D Flash Burst Programming consecutive word

tbwpgm

20.4 3

—31 4

µs

D Flash Burst Programming Time for 32 Words

tbrpgm

678.4 3

—

1035.5 4

µs

P Sector Erase Time

tera

20 5

5 Minimum erase times are achieved under maximum NVM operating frequency fNVMOP.

—26.7 4

P Mass Erase Time

tmass

100 5

—

133 4

D Blank Check Time Flash per block

tcheck

11 6

6 Minimum time, if first word in the array is not blank

—

32778 7

7 Maximum time to complete check on an erased block

tcyc

Z10 D Blank Check Time Data Flash per block

tcheck

11 6

—2058 7

tcyc

tera 4000

fNVMOP

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

⋅

≈

tmass 20000

fNVMOP

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

⋅

≈

tcheck location tcyc 10 tcyc

⋅

≈

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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