HD6432621 Hitachi, HD6432621 Datasheet - Page 793
HD6432621
Manufacturer Part Number
HD6432621
Description
(HD64F262x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD6432621.pdf
(1069 pages)
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22.6
Table 22-9 Flash Memory Characteristics
Conditions: V
Item
Programming time*
Erase time*
Number of rewrites
Programming
Common
Erasing
Notes:
*1 Follow the program/erase algorithms when making the time settings.
*2 Programming time per 128 bytes. (Indicates the total time during which the P1 bit is set in flash
*3 Time to erase one block. (Indicates the time during which the E1 bit is set in FLMCR1. Does not
*4 Maximum programming time
*5 Maximum erase time
Flash Memory Characteristics
1
memory control register 1 (FLMCR1). Does not include the program-verify time.)
include the erase-verify time.)
(t
(z0 + z1)
(t
*
3
P
E
(regular specifications), T
(max) = Wait time after P1 bit setting (z)
(max) = Wait time after E1 bit setting (z)
*
5
Wait time after SWE1 bit setting*
Wait time after PSU1 bit setting*
Wait time after P1 bit setting*
Wait time after P1 bit clearing*
Wait time after PSU1 bit clearing*
Wait time after PV1 bit setting*
Wait time after H'FF dummy write*
Wait time after PV1 bit clearing*
Maximum number of writes*
Wait time after SWE1 bit clearing*
Wait time after SWE1 bit setting*
Wait time after ESU1 bit setting*
Wait time after E1 bit setting*
Wait time after E1 bit clearing*
Wait time after ESU1 bit clearing*
Wait time after EV1 bit setting*
Wait time after H'FF dummy write*
Wait time after EV1 bit clearing*
Maximum number of erases*
CC
1
= 3.0 to 3.6 V, AV
*
2
*
4
6 + z2
994
CC
= 4.5 to 5.5 V, V
a
1
= –40 to +85°C (wide-range specifications)
1
1
*
1
*
*
1
4
*
1
1
1
5
4
5
1
1
1
1
1
1
1
1
1
1
1
Symbol
t
t
N
x0
y
z0
z1
z2
N1
N2
x1
x
y
z
N
P
E
maximum number of writes (N))
maximum number of erases (N))
WEC
SS
= AV
Min
—
—
—
1
50
—
—
—
5
5
4
2
2
—
—
100
1
100
—
10
10
6
2
4
—
SS
= 0 V, T
Typ
10
100
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
a
= –20 to +75°C
Max
200
1000
100
—
—
30
10
200
—
—
—
—
—
6
994
—
—
—
10
—
—
—
—
—
100
Unit
ms/128 bytes
ms/block
Times
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
Times
Times
µs
µs
µs
ms
µs
µs
µs
µs
µs
Times
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