ST72F321J ST Microelectronics, ST72F321J Datasheet - Page 149

• Manufacturer Part Number: ST72F321J
• Description: 8-BIT MCU
• Manufacturer: ST Microelectronics

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DataSheet
12.6 MEMORY CHARACTERISTICS
12.6.1 RAM and Hardware Registers
12.6.2 FLASH Memory
Notes:
1. Minimum V
isters (only in HALT mode). Not tested in production.
2. Data based on characterization results, not tested in production.
3. V
4. Data based on simulation results, not tested in production.
Warning: Do not connect 12V to V
DUAL VOLTAGE HDFLASH MEMORY
Symbol
Symbol
T
T
ERASE
V
f
N
t
t
PP
V
PROG
CPU
I
I
VPP
RET
4
DD
PP
RM
RW
PP
U
must be applied only during the programming or erasing operation and not permanently for reliability reasons.
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Data retention mode
Operating frequency
Programming voltage
Supply current
V
Internal V
Data retention
Write erase cycles
Programming or erasing tempera-
ture range
DD
PP
supply voltage without losing data stored in RAM (in HALT mode or under RESET) or in hardware reg-
current
PP
4)
Parameter
Parameter
stabilization time
4)
1)
PP
3)
before V
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DD
is powered on, as this may damage the device.
HALT mode (or RESET)
Read mode
Write / Erase mode
4.5V
RUN mode (f
Write / Erase
Power down mode / HALT
Read (V
Write / Erase
T
T
A
A
=55°C
=25°C
Conditions
Conditions
V
PP
DD
=12V)
CPU
5.5V
= 4MHz)
Min
11.4
Min
100
-40
1.6
20
0
1
2)
Typ
Typ
10
25
0
1
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Max
Max
12.6
200
10
85
30
8
8
3
2)
ST72321J
cycles
149/179
years
MHz
Unit
Unit
mA
mA
µA
°C
µs
V
V
4U
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