参数资料
型号: ST72F60E1M1
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, PDSO24
封装: 0.300 INCH, LEAD FREE, PLASTIC, SOP-24
文件页数: 32/139页
文件大小: 1993K
代理商: ST72F60E1M1
ST7260xx
Electrical characteristics
127/139
RESET pin protection when LVD is disabled
When the LVD is disabled, it is recommended to protect the RESET pin as shown in
Figure 65 and follow these guidelines:
1.
The reset network protects the device against parasitic resets.
2.
The output of the external reset circuit must have an open-drain output to drive the ST7
reset pad. Otherwise the device can be damaged when the ST7 generates an internal
reset (LVD or watchdog).
3.
Whatever the reset source is (internal or external), the user must ensure that the level
on the RESET pin can go below the VIL max. level specified in Section 16.9.1.
Otherwise the reset will not be taken into account internally.
4.
Because the reset circuit is designed to allow the internal RESET to be output in the
RESET pin, the user must ensure that the current sunk on the RESET pin (by an
external pull-up for example) is less than the absolute maximum value specified for
Figure 65.
RESET pin
protection when LVD is disabled
16.9.2
USB - universal bus interface
Operating conditions TA = 0 to +70 °C, VDD = 4.0 to 5.25 V unless otherwise specified.
0.01
μF
EXTERNAL
RESET
CIRCUIT
Required
ST72XXX
PULSE
GENERATOR
Filter
RON
VDD
WATCHDOG
INTERNAL
RESET
Table 73.
USB DC electrical characteristics
Symbol
Parameter
Conditions(1)
1.
All the voltages are measured from the local ground potential.
Min.
Max.
Unit
VDI
Differential Input Sensitivity
I(D+, D-)
0.2
V
VCM
Differential Common Mode
Range
Includes VDI range
0.8
2.5
VSE
Single Ended Receiver
Threshold
0.8
2.0
VOL
Static Output Low
RL(2) of 1.5 Kohms
to 3.6v
2.
RL is the load connected on the USB drivers.
0.3
VOH
Static Output High
RL (2) of 15 Kohms
to VSS
2.8
3.6
USBV
USBVCC: voltage level (3)
3.
To improve EMC performance (noise immunity), it is recommended to connect a 100nF capacitor to the USBVCC pin.
VDD=5 V
3.00
3.60
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