参数资料
型号: ST7PL38F2MC/XXXE
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
封装: 0.300 INCH, ROHS COMPLIANT, PLASTIC, SOP-20
文件页数: 40/168页
文件大小: 2955K
代理商: ST7PL38F2MC/XXXE
Obsolete
Product(s)
- Obsolete
Product(s)
ST7L34, ST7L35, ST7L38, ST7L39
134/168
OPERATING CONDITIONS (cont’d)
13.3.2 Operating Conditions with Low Voltage Detector (LVD)
TA = -40 to +125°C, unless otherwise specified
Notes:
1. LVD functionality guaranteed only within the VDD operating range specified in section 13.3.1 on page 129
2. Not tested in production
3. Not tested in production. The VDD rise time rate condition is needed to insure a correct device power-on and LVD reset.
When the VDD slope is outside these values, the LVD may not ensure a proper reset of the MCU.
4. Based on design simulation
5. 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 VDD down to 0V to ensure optimum restart conditions. Refer to circuit example in Figure 96 on
page 146 and note 4.
13.3.3 Auxiliary Voltage Detector (AVD) Thresholds
TA = -40 to +125°C, unless otherwise specified
Notes:
1. LVD functionality guaranteed only within the VDD operating range specified in section 13.3.1 on page 129
2. Not tested in production
13.3.4 Internal RC Oscillator and PLL
The ST7 internal clock are supplied by an internal RC oscillator and PLL (selectable by option byte).
Symbol
Parameter
Conditions1)
Min
Typ
Max
Unit
VIT + (LVD)
Reset release threshold
(VDD rise)
High Threshold
3.602)
4.15
4.50
V
VIT - (LVD)
Reset generation threshold
(VDD fall)
High Threshold
3.40
3.95
4.402)
Vhys
LVD voltage threshold hysteresis
VIT + (LVD) -VIT - (LVD)
200
mV
VtPOR
VDD rise time rate
3)5)
202)
1000002)
s/V
tg(VDD)
Filtered glitch delay on VDD
Not detected by the LVD
1504)
ns
IDD(LVD)
LVD/AVD current consumption
220
A
Symbol
Parameter
Conditions1)
Min
Typ
Max
Unit
VIT + (AVD)
1 = >0 AVDF flag toggle threshold
(VDD rise)
High Threshold
3.852)
4.45
4.90
V
VIT - (AVD)
0 = >1 AVDF flag toggle threshold
(VDD fall)
High Threshold
3.80
4.40
4.852)
Vhys
AVD voltage threshold hysteresis
VIT + (AVD) -VIT - (AVD)
150
mV
V
IT-
Voltage drop between AVD flag set
and LVD reset activation
VDD fall
0.45
V
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VDD(RC)
Internal RC Oscillator operating voltage
Refer to operating range
of VDD with TA, section
3.0
5.5
V
VDD(x8PLL)
x8 PLL operating voltage
3.6
5.5
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