Datasheet

Memory characteristics10.3.5
RAM and hardware registers
Table 38: RAM and hardware registers
UnitMinConditionsParameterSymbol
V
V
IT-max
(2)
Halt mode (or reset)
Data retention mode
(1)
V
RM
(1)
Minimum supply voltage without losing data stored in RAM (in halt mode or under reset)
or in hardware registers (only in halt mode). Guaranteed by design, not tested in production.
(2)
Refer to the Operating conditions section for the value of V
IT-max
Flash program memory/data EEPROM memory
Table 39: Flash program memory/data EEPROM memory
UnitMaxTyp
Min
(1)
ConditionsParameterSymbol
V5.5-2.95
f
CPU
≤ 16 MHz
Operating voltage
(all modes, execution/
write/erase)
V
DD
ms
6.66-
Standard programming time
(including erase) for
t
prog
byte/word/block (1 byte/
4 bytes/64 bytes)
3.333-
Fast programming time for
1 block (64 bytes)
3.333-
Erase time for 1 block
(64 bytes)
t
erase
cycles
--10 k
T
A
= +85 °C
Erase/write cycles
(2)
(program memory)
N
RW
-1 M300 k
T
A
= +125 °C
Erase/write cycles
(data memory)
(2)
years--20
T
RET
= 55°C
Data retention (program
and data memory) after 10k
t
RET
erase/write cycles at
T
A
= +55 °C
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Electrical characteristicsSTM8S903K3 STM8S903F3