hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 528
hd64338023s
Manufacturer Part Number
hd64338023s
Description
Renesas 8-bit Single-chip Microcomputer Super Low Power Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HD64338023S.pdf
(697 pages)
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Section 16 Electrical Characteristics
Notes: 1.
Rev. 7.00 Mar 10, 2005 page 486 of 652
REJ09B0042-0700
2.
3.
4.
5.
6.
7.
8.
9.
10. Data retention characteristics within the range indicated in the specifications, including
11. Applies to an operating voltage range when reading data of 3.0 to 3.6 V.
12. Applies to an operating voltage range when reading data of 2.7 to 3.6 V.
Make the time settings in accordance with the program/erase algorithms.
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.)
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.)
Programming time maximum value (t
maximum number of writes (N)
Set the maximum number of writes (N) according to the actual set values of z1, z2,
and z3, so that it does not exceed the programming time maximum value (t
The wait time after P bit setting (z1, z2) should be changed as follows according to the
value of the number of writes (n).
Number of writes (n)
Erase time maximum value (t
number of erases (N)
Set the maximum number of erases (N) according to the actual set value of (z), so that
it does not exceed the erase time maximum value (t
The minimum number of times all characteristics are guaranteed following
reprogramming. (The guarantee covers the range from 1 to the minimum value.)
Reference value at 25°C . (Guideline showing number of reprogrammings over which
functioning will be retained under normal circumstances.)
the minimum value for reprogrammings.
1 ≤ n ≤ 6
7 ≤ n ≤ 1000
z1 = 30 µs
z2 = 200 µs
E
(max)) = wait time after E bit setting (z) × maximum
P
(MAX)) = wait time after P bit setting (z) ×
E
(max)).
P
(MAX)).
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