Hitachi H8/3692 ユーザーズマニュアル

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Rev. 1.0, 07/01, page 299 of 372
20.2.6
Flash Memory Characteristics
Table 20-8 Flash Memory Characteristics
V
CC 
= 3.0 to 5.5 V, V
SS
 = 0.0 V, T
a
 = –20 to +75°C, unless otherwise indicated.
Test
Values
Item
Symbol
Condition
Min
Typ
Max
Unit
Programming time (per 128 bytes)
*
1
*
2
*
4
t
P
7
ms
Erase time (per block)
 *
1
*
3
*
6
t
E
100
ms
Reprogramming count
N
WEC
100
Times
Programming
Wait time after SWE
bit setting
*
1
x
1
µs
Wait time after PSU
bit setting
*
1
y
50
µs
Wait time after P bit setting
z1
 n 
 
6
28
30
32
µs
*
1
*
4
z2
 n 
 1000
198
200
202
µs
z3
Additional-
programming
8
10
12
µs
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 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 number of
writes
*
1
*
4
*
5
N
1000
Times