NXP Semiconductors MPC5777M - Flash memory Array Integrity and Margin Read specifications

MPC5777M Microcontroller Data Sheet, Rev. 6
Electrical characteristics
NXP Semiconductors82
3.15.3 Flash memory Array Integrity and Margin Read specifications
Table 42. Flash memory Array Integrity and Margin Read specifications (characterized but not tested)
Symbol Characteristic Min Typical Max
1
1
Array Integrity times need to be calculated and are dependent on system frequency and number of clocks per read.
The equation presented require Tperiod (which is the unit accurate period, thus for 200 MHz, Tperiod would equal
5e-9) and Nread (which is the number of clocks required for read, including pipeline contribution. Thus for a read setup
that requires 6 clocks to read with no pipeline, Nread would equal 6. For a read setup that requires 6 clocks to read,
and has the address pipeline set to 2, Nread would equal 4 (or 6 - 2).)
Units
2
2
The units for Array Integrity are determined by the period of the system clock. If unit accurate period is used in the
equation, the results of the equation are also unit accurate.
t
ai16kseq
Array Integrity time for sequential sequence on 16KB block. — — 512 ×
Tperiod ×
Nread
—
t
ai32kseq
Array Integrity time for sequential sequence on 32KB block. — — 1024 ×
Tperiod ×
Nread
—
t
ai64kseq
Array Integrity time for sequential sequence on 64KB block. — — 2048 ×
Tperiod ×
Nread
—
t
ai256kseq
Array Integrity time for sequential sequence on 256KB block. — — 8192 ×
Tperiod ×
Nread
—
t
aifullseq
Array Integrity time for sequential sequence full array. — — 3.77e5 ×
Tperiod ×
Nread
—
t
aifullprop
Array Integrity time for proprietary sequence (applies to full
array or single block).
— — 9.96e6 ×
Tperiod ×
Nread
—
t
mr16kseq
Margin Read time for sequential sequence on 16KB block. 73.81 — 110.7 µs
t
mr32kseq
Margin Read time for sequential sequence on 32KB block. 128.43 — 192.6 µs
t
mr64kseq
Margin Read time for sequential sequence on 64KB block. 237.65 — 356.5 µs
t
mr256kseq
Margin Read time for sequential sequence on 256KB block. 893.01 — 1,339.5 µs
t
mrfull
Margin Read time for sequential sequence full array. 45.21 — 60.26 ms