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ST7260 Datasheet(PDF) 99 Page - STMicroelectronics

Part # ST7260
Description  LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 8K FLASH/ROM AND SERIAL COMMUNICATION INTERFACE (SCI)
PDF  117 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7260 Datasheet(HTML) 99 Page - STMicroelectronics

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13.9 CONTROL PIN CHARACTERISTICS
13.9.1 Asynchronous RESET Pin
Subject to general operating conditions for VDD, fCPU, and TA unless otherwise specified.
Notes:
1. Hysteresis voltage between Schmitt trigger switching levels. Based on characterization results, not tested.
2. The IIO current sunk must always respect the absolute maximum rating specified in Section 13.2 and the sum of IIO (I/
O ports and control pins) must not exceed IVSS.
3. The RON pull-up equivalent resistor is based on a resistive transistor. This data is based on characterization results,
not tested in production.
4. To guarantee the reset of the device, a minimum pulse has to be applied to RESET pin. All short pulses applied on
RESET pin with a duration below th(RSTL)in can be ignored.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VIH
Input High Level Voltage
0.7xVDD
VDD
V
VIL
Input Low Voltage
VSS
0.3xVDD
V
Vhys
Schmitt trigger voltage hysteresis 1)
400
mV
VOL
Output low level voltage 2)
VDD=5V
IIO=5 mA
0.8
V
IIO=7.5 mA
1.3
RON
Weak pull-up equivalent resistor 3)
VIN=VSS
VDD=5 V
50
80
100
k
Ω
tw(RSTL)out Generated reset pulse duration
External pin or
internal reset sources
6
30
1/fSFOSC
µs
th(RSTL)in External reset pulse hold time
4)
5
µs



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