ST10F273Z4 STMicroelectronics, ST10F273Z4 Datasheet - Page 154

• Manufacturer Part Number: ST10F273Z4
• Description: 16-BIT MICROCONTROLLER WITH MAC UNIT, UP TO 832 KBYTES FLASH MEMORY AND UP TO 68 KBYTES RAM
• Manufacturer: STMicroelectronics

Specifications of ST10F273Z4

• Single Voltage Supply: 5 V ±10%

Electrical characteristics
24.8.12
154/188
Table 74.
The given values of C
printed circuit board: the negative resistance values are calculated assuming additional 5pF
to the values in the table. The crystal shunt capacitance (C
capacitance between XTAL1 and XTAL2 pins is globally assumed equal to 4pF.
The external resistance between XTAL1 and XTAL2 is not necessary, since already present
on the silicon.
32 kHz oscillator specifications
V
Table 75.
1. At power-on a high current biasing is applied for faster oscillation start-up. Once the oscillation is started,
2. Not 100% tested, guaranteed by design characterization.
Figure 46. 32 kHz crystal oscillator connection diagram
g
V
V
t
Symbol
12 MHz
STUP32
4 MHz
8 MHz
DD
m32
AV32
OSC32
C
the current biasing is reduced to lower the power consumption of the system.
A
= 5V ± 10%, V
=
Oscillator transconductance
Oscillation amplitude
Oscillation voltage level
Oscillator start-up time
460 Ω
380 Ω
370 Ω
12 pF
Main oscillator negative resistance (module)
32 kHz oscillator characteristics
Parameter
SS
460 Ω
420 Ω
15 pF
550 Ω
A
= 0V, T
do not include the stray capacitance of the package and of the
(2)
A
(2)
= –40 °C to +125 °C
(2)
18 pF
675 Ω
540 Ω
360 Ω
(1)
Start-up
Normal run
Peak to peak
Sine wave middle
Stable V
ST10F273Z4
C
800 Ω
640 Ω
22 pF
Conditions
crystal
A
-
DD
840 Ω
580 Ω
27 pF
C
-
A
0
Min.
), the package and the stray
0.5
0.7
20
8
–
1000 Ω
33 pF
-
-
Value
Typ.
1.0
0.9
31
17
1
1180 Ω
39 pF
-
-
Max.
ST10F273Z4
2.4
1.2
50
30
5
1200 Ω
47 pF
µA/V
-
-
Unit
V
s