Datasheet

Electrical characteristics STM32F745xx STM32F746xx
134/227 DocID027590 Rev 4
t
ERASE256KB
Sector (256 KB) erase time
Program/erase parallelism
(PSIZE) = x 8
-2.14
s
Program/erase parallelism
(PSIZE) = x 16
-1.52.6
Program/erase parallelism
(PSIZE) = x 32
-12
t
ME
Mass erase time
Program/erase parallelism
(PSIZE) = x 8
-816
s
Program/erase parallelism
(PSIZE) = x 16
-5.611.2
Program/erase parallelism
(PSIZE) = x 32
-48
V
prog
Programming voltage
32-bit program operation 2.7 - 3 V
16-bit program operation 2.1 - 3.6 V
8-bit program operation 1.7 - 3.6 V
1. Guaranteed by characterization results.
2. The maximum programming time is measured after 100K erase operations.
Table 49. Flash memory programming with V
PP
Symbol Parameter Conditions Min
(1)
Typ Max
(1)
1. Guaranteed by design.
Unit
t
prog
Double word programming
T
A
= 0 to +40 °C
V
DD
= 3.3 V
V
PP
= 8.5 V
-16100
(2)
2. The maximum programming time is measured after 100K erase operations.
µs
t
ERASE32KB
Sector (32 KB) erase time - 180 -
mst
ERASE128KB
Sector (128 KB) erase time - 450 -
t
ERASE256KB
Sector (256 KB) erase time - 900 -
t
ME
Mass erase time - 6.9 - s
V
prog
Programming voltage - 2.7 - 3.6 V
V
PP
V
PP
voltage range - 7 - 9 V
I
PP
Minimum current sunk on
the V
PP
pin
-10--mA
t
VPP
(3)
3. V
PP
should only be connected during programming/erasing.
Cumulative time during
which V
PP
is applied
- - - 1 hour
Table 48. Flash memory programming (continued)
Symbol Parameter Conditions Min
(1)
Typ Max
(1)
Unit
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