HD64F36022 datasheet(291/384 Pages) RENESAS

291 / 384 page

Section 18 Electrical Characteristics

Rev. 4.00 Sep. 23, 2005 Page 265 of 354

REJ09B0025-0400

Test

Values

Item

Symbol

Condition

Min

Typ

Max

Unit

Erase

Wait time after SWE

bit setting*

—

µs

Wait time after ESU

bit setting*

100

—

µs

Wait time after E bit

setting*

1*6

—

100

Wait time after E bit clear*

—

µs

Wait time after ESU

bit clear*

—

µs

Wait time after EV

bit setting*

—

µs

Wait time after

dummy write*

—

µs

Wait time after EV bit clear*

—

µs

Wait time after SWE

bit clear*

100

—

µs

Maximum erase count*

1*6*7

—

120

Times

Notes: 1. Make the time settings in accordance with the program/erase algorithms.

2. The programming time for 128 bytes. (Indicates the total time for which the P bit in flash

memory control register 1 (FLMCR1) is set. The program-verify time is not included.)

3. The time required to erase one block. (Indicates the time for which the E bit in flash

memory control register 1 (FLMCR1) is set. The erase-verify time is not included.)

4. Programming time maximum value (t

P (max.)) = wait time after P bit setting (z) ×

maximum programming count (N)

5. Set the maximum programming count (N) according to the actual set values of z1, z2,

and z3, so that it does not exceed the programming time maximum value (t

P (max.)).

The wait time after P bit setting (z1, z2) should be changed as follows according to the

value of the programming count (n).

Programming count (n)

≤ n ≤ 6

z1 = 30 µs

≤ n ≤ 1000 z2 = 200 µs

6. Erase time maximum value (t

E (max.)) = wait time after E bit setting (z) × maximum

erase count (N)

7. Set the maximum erase count (N) according to the actual set value of (z), so that it

does not exceed the erase time maximum value (t

E (max.)).

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