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ST7LITE20F2 View Datasheet(PDF) - STMicroelectronics

Part Name
Description
MFG CO.
'ST7LITE20F2' PDF : 166 Pages View PDF
Electrical characteristics
ST7LITE20F2 ST7LITE25F2 ST7LITE29F2
13.3.3 Auxiliary voltage detector (AVD) thresholds
TA = -40 to 85°C, unless otherwise specified.
Table 62. AVD thresholds
Symbol
Parameter
Conditions
VIT+(AVD)
1=>0 AVDF flag toggle threshold
(VDD rise)
High Threshold
Med. Threshold
Low Threshold
VIT-(AVD)
0=>1 AVDF flag toggle threshold
(VDD fall)
High Threshold
Med. Threshold
Low Threshold
Vhys
ΔVIT-
AVD voltage threshold hysteresis
VIT+(AVD)-VIT-(AVD)
Voltage drop between AVD flag set and
LVD reset activation
VDD fall
1. Not tested in production.
Min
4.40(1)
3.90(1)
3.20(1)
4.30
3.70
2.90
Typ
4.70
4.10
3.40
4.60
3.90
3.20
150
Max
5.00
4.30
3.60
4.90(1)
4.10(1)
3.40(1)
Unit
V
mV
0.45
V
13.3.4
Internal RC oscillator and PLL
The ST7 internal clock can be supplied by an internal RC oscillator and PLL (selectable by
option byte).
Table 63. Internal RC oscillator and PLL
Symbol
Parameter
VDD(RC)
VDD(x4PLL)
VDD(x8PLL)
Internal RC Oscillator operating voltage
x4 PLL operating voltage
x8 PLL operating voltage
tSTARTUP PLL Startup time
Min
Typ Max
Unit
2.4
5.5
2.4
3.3
V
3.3
5.5
PLL
input
60
clock
(fPLL)
cycles
The RC oscillator and PLL characteristics are temperature-dependent and are grouped in
four tables.
Table 64.
Symbol
RC oscillator and PLL characteristics (tested for TA = -40 to +85°C) @ VDD = 4.5 to
5.5 V
Parameter
Conditions
Min Typ Max Unit
fRC (1)
ACCRC
Internal RC oscillator
frequency (1)
Accuracy of Internal RC
oscillator with
RCCR=RCCR0(2)
RCCR = FF (reset value), TA=25 °C,
VDD=5 V
RCCR = RCCR0(2), TA=25 °C, VDD=5 V
TA=25° C, VDD=4.5 to 5.5 V
TA=-40 to +85 °C, VDD=5 V
TA=0 to +85° C, VDD=4.5 to 5.5 V
760
kHz
1000
-1
+1
%
-5
+2
%
-2 (3)
+2(3)
%
122/166
Doc ID 8349 Rev 5
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