参数资料
型号: ST72311R9T3/XXX
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, PQFP64
封装: 14 X 14 MM, TQFP-64
文件页数: 39/152页
文件大小: 1909K
代理商: ST72311R9T3/XXX
ST72311R, ST72511R, ST72532R
133/152
12.9 CONTROL PIN CHARACTERISTICS
12.9.1 Asynchronous RESET Pin
Subject to general operating condition for VDD, fOSC, and TA unless otherwise specified.
Figure 81. Typical Application with RESET pin 5)
12.9.2 VPP Pin
Subject to general operating condition for VDD, fOSC, and TA unless otherwise specified.
Figure 82. Two typical Applications with VPP Pin
7)
Notes:
1. Unless otherwise specified, typical data are based on TA=25°C and VDD=5V.
2. Data based on characterization results, not tested in production.
3. Hysteresis voltage between Schmitt trigger switching levels. Based on characterization results, not tested.
4. The RON pull-up equivalent resistor is based on a resistive transistor. This data is based on characterization results,
not tested in production.
5. The reset network protects the device against parasitic resets, especially in a noisy environment.
6. Data based on design simulation and/or technology characteristics, not tested in production.
7. When the in-circuit programming mode is not required by the application VPP pin must be tied to VSS.
Symbol
Parameter
Conditions
Min
Typ 1)
Max
Unit
VIL
Input low level voltage 2)
0.3xVDD
V
VIH
Input high level voltage 2)
0.7xVDD
Vhys
Schmitt trigger voltage hysteresis 3)
400
mV
RON
Weak pull-up equivalent resistor 4)
VIN=VSS VDD=5V
20
60
k
tw(RSTL)out Generated reset pulse duration
Watchdog reset source
1
s
th(RSTL)in External reset pulse hold time
20
s
RESET
VDD
WATCHDOG RESET
ST72XXX
LVD RESET
INTERNAL RESET CONTROL
RON
0.1
F
VDD
0.1
F
VDD
4.7k
EXTERNAL
RESET
CIRCUIT
Symbol
Parameter
Conditions
Min
Max
Unit
VIL
Input low level voltage 6)
VSS
0.2
V
VIH
Input high level voltage 6)
VDD-0.1
12.6
VPP
ST72XXX
4.7k
PROGRAMMING
TOOL
VPP
ST72XXX
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