H838532H datasheet(438/508 Pages) RENESAS

438 / 508 page

Section 16 Electrical Characteristics

Rev. 1.00 May 30, 2008 Page 418 of 484

REJ09B0436-0100

Values

Item

Symbol

Min

Typ

Max

Unit

Test

Conditions

Wait time after

SWE-bit setting*

—

µs

Wait time after

ESU-bit setting*

100

—

µs

Wait time after

E-bit setting*

—

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

Erase

Maximum erase

count*

*6*7

—

120

times

Notes:

Set the times according to the program/erase algorithms.

Programming time per 128 bytes (Shows the total period for which the P bit in FLMCR1 is set. It

does not include the programming verification time.)

Block erase time (Shows the total period for which the E bit in FLMCR1 is set. It does not include

the erase verification time.)

Maximum programming time (t

P (max))

P (max) = Wait time after P-bit setting (z) × maximum number of writes (N)

The maximum number of writes (N) should be set according to the actual set value of z1, z2, and

z3 to allow programming within the maximum programming time (t

P (max)).

The wait time after P-bit setting (z1 and z2) should be alternated according to the number of writes

(n) as follows:

≤ n ≤ 6

z1 = 30 µs

≤ n ≤ 1000 z2 = 200 µs

Maximum erase time (t

E (max))

E (max) = Wait time after E-bit setting (z) × maximum erase count (N)

7. The maximum number of erases (N) should be set according to the actual set value of z to allow

erasing within the maximum erase time (t

E (max)).

8. This minimum value guarantees all characteristics after reprogramming (the guaranteed range is

from 1 to the minimum value).

Reference value when the temperature is 25

°C (normally reprogramming will be performed by this

count).

10. This is a data retain characteristic when reprogramming is performed within the specification range

including this minimum value.

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