ST72T311 ST Microelectronics, ST72T311 Datasheet - Page 89

• Manufacturer Part Number: ST72T311
• Description: 8-BIT MCU WITH 8 TO 16K OTP/EPROM
• Manufacturer: ST Microelectronics

6.4 RESET CHARACTERISTICS
(T
Note:
1) These values given only as design guidelines and are not tested.
6.5 OSCILLATOR CHARACTERISTICS
(T
6.6 PERIPHERAL CHARACTERISTICS
Notes:
1. The safe reset cannot be guaranted by the LVD when fosc is greater than 8MHz.
2. Based on characterisation results, not tested.
t
t
RESET
PULSE
V
Symbol
Symbol
A
A
V
Symbol
LVDDOWN
V
=-40...+125
R
f
t
LVDHYS
= -40 C to +125 C unless otherwise specified)
OSC
g
start
LVDUP
ON
m
Reset Weak Pull-up R
Pulse duration generated by watch-
dog and POR reset
Minimum pulse duration to be ap-
plied on external RESET pin
Oscillator transconductance
Crystal frequency
Osc. start up time
LVD Reset Trigger, V
LVD Reset Trigger, V
o
C and V
LVD Reset Trigger, hysteresis
Parameter
Parameter
Low Voltage Detection Reset Electrical Specifications (Optio n)
DD
Parameter
=5V 10% unless otherwise specified.
ON
DD
DD
falling edge
rising edge
Test Conditions
2)
V
V
V
DD
IN
IN
> V
< V
= 5V 10%
f
OSC
IH
IL
Condition s
Conditions
= 8 MHz max
1)
Min.
.
2
1
3.6
Min.
3.35
10
Min
20
60
2)
1)
Value
Typ.
ST72E311 ST72T311
Typ
Typ.
3.85
250
3.6
120
40
1
1)
Max.
16
50
9
Max.
Max
3.85
240
80
4.1
89
mA/V
MHz
Unit
Unit
ms
Unit
89/100
mV
k
ns
V
V
s