Datasheet

Rev.6.00 Oct.28.2004 page 726 of 1016
REJ09B0138-0600H
Table 22-22 Flash Memory Characteristics (HD64F2398F20T, HD64F2398TE20T)
Conditions: V
CC
= 5.0 V ± 10%, AV
CC
= 5.0 V ± 10%, V
ref
= 4.5 V to AV
CC
, V
SS
= AV
SS
= 0V
T
a
= 0 to +75°C (Programming/erasing operating temperature, regular specifications), T
a
= 0 to + 85°C
(Programming/erasing operating temperature, wide-range specifications)
Item Symbol Min Typ Max Unit
Test
Condition
Programming time*
1
*
2
*
4
t
P
— 10 200 ms/128
bytes
Erase time*
1
*
3
*
6
t
E
— 50 1000 ms/block
Reprogramming count N
WEC
— — 1000 Times
Programming Wait time after SWE bit setting*
1
x1——µs
Wait time after PSU bit setting*
1
y50——µs
Wait time after P bit setting*
1
*
4
z (z1) — — 30 µ s1 ≤ n ≤ 6
(z2) — — 200 µs 7 ≤ n ≤ 1000
(z3) — — 10 µs Additional
program-
ming wait
Wait time after P bit clear*
1
α 5—— µs
Wait time after PSU bit clear*
1
β 5—— µs
Wait time after PV bit setting*
1
γ 4—— µs
Wait time after H'FF dummy
write*
1
ε 2—— µs
Wait time after PV bit clear*
1
η 2—— µs
Wait time after SWE bit clear*
1
θ 100 — — µs
Maximum programming
count*
1
*
4
N — — 1000*
5
Times
Erase Wait time after SWE bit
setting*
1
x1——µs
Wait time after ESU bit
setting*
1
y 100 — — µs
Wait time after E bit setting*
1
*
6
z — — 10 ms Erase time
wait
Wait time after E bit clear*
1
α 10 — — µs
Wait time after ESU bit clear*
1
β 10 — — µs
Wait time after EV bit setting*
1
γ 20 — — µs
Wait time after H’FF dummy
write*
1
ε 2—— µs
Wait time after EV bit clear*
1
η 4—— µs
Wait time after SWE bit clear*
1
θ 100 — — µs
Maximum erase count*
1
*
6
N — — 100 Times
Notes: 1. Settings of each time must comply with algorithm of writing/erasing.
2. Writing time for 128 bytes: indicates the total period in which bit P of flash memory control register 1 (FLMCR1)
is set. Writing verification time is not included.
3. Erasing time for one block: indicates the period in which bit E of FLMCR1 is set. Erasing verification time is not
included.
4. Maximum writing time: t
P
(max) = Σ wait time (z) after setting of bit P