CHAPTER 18 ELECTRICAL SPECIFICATIONS
789
User’s Manual U14492EJ3V0UD
18.2 Flash Memory Programming Mode (
µµµµ
PD70F3116 only)
Basic Characteristics (T
A
= 0 to 70
°°°°
C (during rewrite),
T
A
=
−−−−
40 to +85
°°°°
C (except during rewrite):
µµµµ
PD70F3116, 70F3116(A),
T
A
=
−−−−
40 to +110
°°°°
C (except during rewrite):
µµµµ
PD70F3116(A1),
V
DD3
= CV
DD
= 3.0 to 3.6 V, V
DD5
= 5 V
±±±±
0.5 V, V
SS3
= V
SS5
= CV
SS
= 0 V)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Operating frequency
f
X
4
50
MHz
V
PP1
During flash memory
programming
7.5
7.8
8.1
V
V
PPL
V
PP
low-level detection
0.8V
DD3
V
DD3
1.2V
DD3
V
V
PPM
V
PP
, V
DD3
level detection
0.65V
DD3
V
DD3
+ 0.3
V
V
PP
supply voltage
V
PPH
V
PP
high-voltage level
detection
7.5
7.8
8.1
V
V
DD3
supply current
I
DD1
V
PP
= V
PP1
4.5fx
mA
V
PP
supply current
I
PP
V
PP
= 7.8 V
100
mA
Step erase time
t
ER
Note 1
0.398
0.4
0.402
s
Overall erase time per area
t
ERA
When the step erase time =
0.4 s,
Note 2
40
s/area
Write-back time
t
WB
Note 3
0.99
1
1.01
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
WT
Note 5
18
20
22
µ
s
Overall writing time per word
t
WTW
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
100
Count/area
Notes 1.
The recommended setting value of the step erase time is 0.4 s.
2.
The prewrite time prior to erasure and the erase verify time (write-back time) are not included.
3.
The recommended setting value of the write-back time is 1 ms.
4.
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.
5.
The recommended setting value of the step writing time is 20
µ
s.
6.
20
µ
s is added to the actual writing time per word. The internal verify time during and after the writing
is not included.
7.
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
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 = 00000H to 1FFFFH, area 1 = 20000H to 3FFFFH
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