参数资料
型号: ST7FL19F1MATRE
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO20
封装: 0.300 INCH, LEAD FREE, PLASTIC, SOP-20
文件页数: 8/138页
文件大小: 2515K
代理商: ST7FL19F1MATRE
ST7L15, ST7L19
105/138
OPERATING CONDITONS (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 100.
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 rec-
ommended to pull VDD down to 0V to ensure optimum restart conditions. Refer to circuit example in Figure 95 on
page 119 and note 4.
13.3.3 Internal RC Oscillator and PLL
The ST7 internal clock can be supplied by an internal RC oscillator and PLL (selectable by option byte).
Notes:
1. x4 PLL option only applicable on Flash devices.
Symbol
Parameter
Conditions1)
Min
Typ
Max
Unit
VIT+(LVD)
Reset release threshold (VDD rise)
3.802)
4.20
4.60
V
VIT-(LVD)
Reset generation threshold (VDD fall)
3.70
4.00
4.352)
Vhys
LVD voltage threshold hysteresis
VIT+(LVD)-VIT-(LVD)
200
mV
VtPOR
VDD rise time rate
3)5)
0.022)
1002)
ms/V
tg(VDD)
Filtered glitch delay on VDD
Not detected by the LVD
1504)
ns
IDD(LVD)
LVD current consumption
200
A
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(x4PLL)
x4 PLL operating voltage1)
3.0
3.6
VDD(x8PLL)
x8 PLL operating voltage
3.6
5.5
tSTARTUP
PLL Start-up time
60
PLL
input
clock
(fPLL)
cycles
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