
Data Sheet U14527EJ3V0DS
42
μ
PD70F3015B, 70F3015BY, 70F3017A, 70F3017AY
Flash Memory Programming Mode
Write/erase characteristics (T
A
= 10 to 40
°
C, V
DD
= AV
DD
= BV
DD
= 3.0 to 3.6 V, V
SS
= AV
SS
= BV
SS
= 0 V)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
V
PP
supply voltage
V
PP2
During flash memory
programming
7.5
7.8
8.1
V
V
DD
supply current
I
DD
When V
PP
= V
PP2
, f
XX
= 20
MHz
67
mA
V
PP
supply current
I
PP
V
PP
= V
PP2
200
mA
Step erase time
t
ER
Note 1
0.2
s
Overall erase time per area
t
ERA
When the step erase time
= 0.2 s,
Note 2
20
s/area
Write-back time
t
WB
Note 3
1
ms
Number of write-backs per
write-back command
C
WB
When the write-back time
= 1 ms,
Note 4
300
Count/write-
back
command
Number of erase/write-backs
C
ERWB
16
Count
Step writing time
t
WR
Note 5
20
μ
s
Overall writing time per word
t
WRW
When the step writing
time = 20
μ
s (1 word = 4
bytes),
Note 6
20
200
μ
s/word
Number of rewrites per area
C
ERWR
1 erase + 1 write after
erase = 1 rewrite,
Note 7
20
Count/area
Notes 1.
The recommended setting value of the step erase time is 0.2 s.
The prewrite time prior to erasure and the erase verify time (write-back time) are not included.
The recommended setting value of the write-back time is 1 ms.
Write-back is executed once by the issuance of the write-back command. Therefore, the retry count
must be the maximum value minus the number of commands issued.
The recommended setting value of the step writing time is 20
μ
s.
20
μ
s is added to the actual writing time per word. The internal verify time during and after the writing
is not included.
When writing initially to shipped products, it is counted as one rewrite for both
“
erase to write
”
and
“
write only
”
.
Example
(P: Write, E: Erase)
Shipped product
→
P
→
E
→
P
→
E
→
P: 3 rewrites
Shipped product
→
E
→
P
→
E
→
P
→
E
→
P: 3 rewrites
2.
3.
4.
5.
6.
7.
Remarks 1.
When the PG-FP3 is used, a time parameter required for writing/erasing by downloading
parameter files is automatically set. Do not change the settings unless otherwise specified.
2.
Area 0 = 000000H to 01FFFFH (
μ
PD70F3017A, 70F3017AY only)
Area 1 = 020000H to 03FFFFH (
μ
PD70F3017A, 70F3017AY only)