ST7MC1/ST7MC2
11.6 MEMORY CHARACTERISTICS
11.6.1 RAM and Hardware Registers
Symbol
Parameter
VRM
Data retention mode 1)
Conditions
Min
Typ
Max
Unit
HALT mode (or RESET)
1.6
V
11.6.2 FLASH Memory
DUAL VOLTAGE HDFLASH MEMORY
Symbol
Parameter
Conditions
Min 2)
Typ
Max 2) Unit
fCPU
VPP
IPP
Operating frequency
Programming voltage 3)
VPP current4) 5)
Read mode
0
Write / Erase mode
1
4.5V ≤ VDD ≤ 5.5V
11.4
Read (VPP=12V)
Write / Erase
8
MHz
8
12.6
V
200
µA
30
mA
tVPP
tRET
NRW
TPROG
TERASE
Internal VPP stabilization time
Data retention
Write erase cycles
Programming or erasing tempera-
ture range
TA=55°C
TA=25°C
10
20
100
-40
25
µs
years
cycles
85
°C
Notes:
1. Minimum VDD supply voltage without losing data stored in RAM (in HALT mode or under RESET) or in hardware reg-
isters (only in HALT mode). Not tested in production.
2. Data based on characterization results, not tested in production.
3. VPP must be applied only during the programming or erasing operation and not permanently for reliability reasons.
4. Data based on simulation results, not tested in production
5. In Write/Erase mode the IDD supply current consumption is the same as in Run mode (section 11.4.1 on page 248 )
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