ST72260G1 STMicroelectronics, ST72260G1 Datasheet - Page 129

• Manufacturer Part Number: ST72260G1
• Description: 8-BIT MCU WITH FLASH OR ROM MEMORY, ADC, TWO 16-BIT TIMERS, I2C, SPI, SCI INTERFACES
• Manufacturer: STMicroelectronics

Specifications of ST72260G1

• 4 K Or 8 Kbytes Program Memory: ROM or single voltage extended Flash (XFlash) with read-out protection, write protection, In-Circuit Programming and In-Application Programming (ICP and IAP). 10K write/erase cycles guaranteed, data retention
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• 4 Power Saving Modes: Halt, Active Halt,Wait and Slow
• Two 16-bit Timers With: 2 input captures, 2 output compares, external clock input on one timer, PWM and Pulse generator modes

OPERATING CONDITIONS (Cont’d)
13.3.2 Operating Conditions with Low Voltage Detector (LVD)
T
Notes:
1. Data based on characterization results, not tested in production.
2. When Vt
V
3. Use of LVD with capacitive power supply: with this type of power supply, if power cuts occur in the application, it is
recommended to pull V
151
.
Figure 65. LVD Startup Behaviour
Note: When the LVD is enabled, the MCU reaches its authorized operating voltage from a reset state.
However, in some devices, the reset signal may be undefined until V
quence, the I/Os may toggle when V
Because Flash write access is impossible below this voltage, the Flash memory contents will not be cor-
rupted.
V
V
V
Vt
t
A
IT+(LVD)
g(VDD)
Symbol
IT+(LVD)
IT-(LVD)
hys(LVD)
POR
= -40 to +85°C unless otherwise specified
Reset state
not defined
in this area
and note 6.
threshold.
POR
Reset release threshold
(V
Reset generation threshold
(V
LVD voltage threshold hysteresis
V
Filtered glitch delay on V
DD
DD
DD
is faster than 100 µs/V, the Reset signal is released after a delay of max. 42µs after V
2V
rise time rate
5V
V
rise)
fall)
IT+
DD
Parameter
down to 0V to ensure optimum restart conditions. Refer to circuit example in
1)2)3)
DD
1)
DD
is below this voltage.
High Threshold
Med. Threshold
Low Threshold
High Threshold
Med. Threshold
Low Threshold
V
Flash
ROM
Not detected by the LVD
IT+(LVD)
-V
Conditions
IT-(LVD)
ST72260Gx, ST72262Gx, ST72264Gx
DD
is approximately 2V. As a conse-
20µs/V
20µs/V
3.55
2.95
4.0
3.75
2.75
t
Min
3.3
1)
1)
1)
LVD RESET
Typ
3.75
3.15
3.55
200
4.2
4.0
3.0
20ms/V
Figure 91 on page
4.25
3.75
3.15
Max
3.35
∞
4.5
4.0
40
DD
1)
1)
1)
crosses the
129/172
Unit
mV
ns
V