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Note 4. The reprogram/erase cycle is the number of erasures for each block. When the reprogram/erase cycle is n times (n = 10,000),

erasing can be performed n times for each block. For example, when 128-byte programming is performed 64 times for different

addresses in 8-KB blocks, and then the entire block is erased, the reprogram/erase cycle is counted as one. However, programming

the same address several times as one erasure is not enabled. Overwriting is prohibited.

Note 5. Time for resumption includes time for reapplying the erasing pulse (up to one full pulse) that was cut off at the time of suspension.

Note 6. The reference value at VCC = 3.3V and room temperature.

FACI command

FSTATR.FRDY

Programming pulse

• Suspension during programming

FACI command

FSTATR.FRDY

Erasure pulse

• Suspension during erasure in suspend priority mode

FACI command

FSTATR.FRDY

Erasure pulse

• Suspension during erasure in erasure priority mode

Program

Suspend

Ready

Not Ready

Ready

Programming

tSPD

Erase

Suspend

Ready

Not Ready

Ready

tSEED

Erasing

Erase

Suspend

Resume

Suspend

Ready

Not Ready

Ready

Not Ready

tSESD1

tSESD2

Erasing

tFD

• Forced Stop

FACI command

FSTATR.FRDY

Forced Stop

Not Ready

Ready

Resume

tPRT

Programming

Resume

tREST1

Ready

Not Ready

tREST2

Erasing

Resume

Not Ready

tREET

Erasing

Figure 2.59

Suspension and forced stop timing for flash memory programming and erasure

2.11.2

Data Flash Memory Characteristics

Table 2.45

Data flash memory characteristics (1 of 2)

Conditions: Program or erase: FCLK = 4 to 50 MHz

Read: FCLK ≤ 50 MHz

Parameter

Symbol

FCLK = 4 MHz

20 MHz ≤ FCLK ≤ 50 MHz

Unit

Test

conditions

Min

Typ*6 Max Min

Typ*6

Max

Programming time

4-byte

tDP4

—

0.36

3.8

—

0.16

1.7

8-byte

tDP8

—

0.38

4.0

—

0.17

1.8

16-byte

tDP16

—

0.42

4.5

—

0.19

2.0

Erasure time

64-byte

tDE64

—

3.1

—

1.7

128-byte tDE128

—

4.7

—

2.6

256-byte tDE256

—

8.9

—

4.9

Blank check time

4-byte

tDBC4

—

µs

Reprogramming/erasure cycle*1

NDPEC

125000*2 —

—

125000*2

—

RA4T1 Datasheet

2. Electrical Characteristics

R01DS0415EJ0140 Rev.1.40

May 29, 2026

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