ST7FLITE20F2B6 STMicroelectronics, ST7FLITE20F2B6 Datasheet - Page 94

• Manufacturer Part Number: ST7FLITE20F2B6
• Description: IC MCU 8BIT 8K FLASH 20DIP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST7FLITE20F2B6

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Processor Series: ST7FLITE2x
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 384 B
• Interface Type: SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 15
• Number Of Timers: 4 bit
• Operating Supply Voltage: 2.4 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Development Tools By Supplier: ST7FLIT2-COS/COM, ST7FLITE-SK/RAIS, ST7MDT10-DVP3, ST7MDT10-EMU3, STX-RLINK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 13 bit
• For Use With: 497-5858 - EVAL BOARD PLAYBACK ST7FLITE497-5517 - EVAL BOARD 1PHASE ENERGY METER497-5049 - KIT STARTER RAISONANCE ST7FLITE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: In Transition
• Other names: 497-4856

ST7LITE2
13.3.2 Operating conditions with Low Voltage Detector (LVD)
T
Notes:
1. Not tested in production.
2. Not tested in production. The V
When the 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
page 112
13.3.3 Auxiliary Voltage Detector (AVD) Thresholds
T
Note:
1. Not tested in production.
13.3.4 Internal RC Oscillator and PLL
The ST7 internal clock can be supplied by an internal RC oscillator and PLL (selectable by option byte).
94/133
1
V
V
V
Vt
t
I
V
V
V
∆V
V
V
V
t
A
A
g(VDD)
DD(LVD
STARTUP
Symbol
Symbol
Symbol
IT+
IT-
hys
IT+
IT-
hys
DD(RC)
DD(x4PLL)
DD(x8PLL)
POR
= -40 to 85°C, unless otherwise specified
= -40 to 85°C, unless otherwise specified
IT-
(LVD)
(AVD)
(LVD)
(AVD)
)
and note 4.
DD
Reset release threshold
(V
Reset generation threshold
(V
LVD voltage threshold hysteresis
V
Filtered glitch delay on V
LVD/AVD current consumption
1=>0 AVDF flag toggle threshold
(V
0=>1 AVDF flag toggle threshold
(V
AVD voltage threshold hysteresis
Voltage drop between AVD flag set
and LVD reset activation
Internal RC Oscillator operating voltage
x4 PLL operating voltage
x8 PLL operating voltage
PLL Startup time
DD
slope is outside these values, the LVD may not ensure a proper reset of the MCU.
DD
DD
DD
DD
rise time rate
rise)
fall)
rise)
fall)
DD
Parameter
Parameter
down to 0V to ensure optimum restart conditions. Refer to circuit example in
Parameter
2)3)
DD
rise time rate condition is needed to insure a correct device power-on and LVD reset.
DD
High Threshold
Med. Threshold
Low Threshold
High Threshold
Med. Threshold
Low Threshold
V
Not detected by the LVD
High Threshold
Med. Threshold
Low Threshold
High Threshold
Med. Threshold
Low Threshold
V
V
IT+
IT+
DD
(LVD)
(AVD)
fall
Conditions
Conditions
-V
-V
IT-
IT-
Conditions
(LVD)
(AVD)
3.40
2.65
4.00
4.40
3.90
3.20
3.80
3.20
2.40
4.30
3.70
2.90
Min
Min
20
Min
2.4
2.4
3.3
1)
1)
1)
1)
1)
1)
Typ
Typ
4.25
3.60
2.90
4.05
3.40
2.70
4.70
4.10
3.40
4.60
3.90
3.20
0.45
200
220
150
Typ
60
4.30
3.65
20000
2.90
4.90
4.10
3.40
Max
Max
4.50
3.80
3.15
5.00
4.30
3.60
150
Max
5.5
3.3
5.5
Figure 84 on
1)
1)
1)
1)
1)
1)
cycles
µs/V
Unit
Unit
(f
clock
input
mV
mV
Unit
PLL
µA
ns
V
V
V
PLL
V
)