UPD78F4218AGF-3BA Renesas Electronics America, UPD78F4218AGF-3BA Datasheet - Page 43

• Manufacturer Part Number: UPD78F4218AGF-3BA
• Manufacturer: Renesas Electronics America

Specifications of UPD78F4218AGF-3BA

• Lead Free Status / Rohs Status: Supplier Unconfirmed

V
V
V
Step erase time
Overall erase time per area
Write-back time
Number of write-backs per write-
back command
Number of erase/write-backs
Step write time
Overall write time per word
Number of rewrites per area
PP
DD
PP
(2) Write erase characteristics
Notes 1. The recommend setting value for the step erase time is 0.2 s.
Remarks 1. The range of the operating clock during flash memory programming is the same as the range during
supply voltage
supply current
supply current
2. The rewrite time before erasure and the erase verify time (write-back time) is not included.
3. The recommended setting value for the write-back time is 50 ms.
4. Write-back is executed once by the issuance of the write-back command. Therefore, the retry times
5. Recommended value of the step write time is 50 µ s.
6. The actual write time per word is 100 µ s longer. The internal verify time during or after a write is not
7. When a product is first written after shipment, “erase → write” and “write only” are both taken as one
Parameter
2. When using the PG-FP3, the time parameters that need to be downloaded from the parameter files
must be the maximum value minus the number of commands issued.
included.
rewrite.
Example: P: Write, E: Erase
normal operation.
for write/erase are automatically set. Unless otherwise directed, do not change the set values.
Shipped product →
Shipped product → E→ P → E → P → E → P: 3 rewrites
Symbol
C
C
V
T
T
T
C
T
I
I
T
DD
erwb
PP2
PP
wrw
erwr
era
wb
wb
wr
er
µ µ µ µ PD78F4216A, 78F4218A, 78F4216AY, 78F4218AY
During flash memory programming
When V
When V
Note 1
When step erase time = 0.2 s
Note 3
When write-back time = 50 ms
Note 5
When step write time = 50 µ s
(1 word = 1 byte)
1 erase + 1 write after erase = 1 rewrite
Data Sheet U14125EJ3V0DS
P → E → P → E → P: 3 rewrites
PP
PP
= V
= V
PP2
PP2
Conditions
, f
Note 6
XX
= 12.5 MHz
Note 2
Note 4
Note 7
MIN.
9.7
50
20
TYP.
10.0
0.2
50
50
MAX.
10.3
100
500
40
20
60
16
write-back
command
s/area
times/
times
times/
word
area
Unit
mA
mA
µ s/
ms
µ s
V
s
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