ST7-STICK45 STMICROELECTRONICS [STMicroelectronics], ST7-STICK45 Datasheet - Page 85

• Manufacturer Part Number: ST7-STICK45
• Description: 8-bit microcontroller with single voltage Flash memory, data EEPROM, ADC, timers, SPI
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

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).
The RC oscillator and PLL characteristics are temperature-dependent and are grouped in two tables.
13.3.4.1 Devices with “6” order code suffix (tested for T
Notes:
1. If the RC oscillator clock is selected, to improve clock stability and frequency accuracy, it is recommended to place a
decoupling capacitor, typically 100nF, between the V
2. See “INTERNAL RC OSCILLATOR ADJUSTMENT” on page 24
3. Data based on characterization results, not tested in production
4. Averaged over a 4ms period. After the LOCKED bit is set, a period of t
5. After the LOCKED bit is set ACC
6. Guaranteed by design.
V
V
V
t
f
ACC
I
t
f
t
t
ACC
t
JIT
STARTUP
Symbol
RC
DD(RC)
su(RC)
PLL
LOCK
STAB
w(JIT)
I
DD(PLL)
Symbol
DD(RC)
DD(x4PLL)
DD(x8PLL)
PLL
1)
RC
PLL
Internal RC oscillator fre-
quency
Accuracy of Internal RC
oscillator with
RCCR=RCCR0
RC oscillator current con-
sumption
RC oscillator setup time
x8 PLL input clock
PLL Lock time
PLL Stabilization time
x8 PLL Accuracy
PLL jitter period
PLL jitter (∆f
PLL current consumption T
Internal RC Oscillator operating voltage
x4 PLL operating voltage
x8 PLL operating voltage
PLL Startup time
Parameter
CPU
5)
2)
/f
Parameter
CPU
)
5)
PLL
is max. 10% until t
RCCR = FF (reset value), T
RCCR = RCCR0
T
T
T
T
T
f
f
f
RC
RC
RC
A
A
A
A
A
A
=25°C,V
=-40 to +85°C, V
=0 to +85°C, V
=25°C,V
=25°C,V
=25°C
= 1MHz@T
= 1MHz@T
= 1MHz
DD
DD
DD
DD
=4.5 to 5.5V
=5V
=5V
A
A
Conditions
and V
=25°C, V
=-40 to +85°C, V
2 )
DD
Conditions
STAB
,T
DD
=4.5 to 5.5V
A
=5V
=25°C, V
SS
has elapsed. See
pins as close as possible to the ST7 device.
DD
A
A
=25°C, V
=4.5 to 5.5V
= -40 to +85°C) @ V
DD
Min
2.4
2.4
3.3
STAB
DD
=5V
=5V
DD
is required to reach ACC
=5V
ST7LITE0xY0, ST7LITESxY0
Typ
Figure 13 on page
60
Min
-2
-1
-5
3)
Max
5.5
3.3
5.5
DD
970
600
1000
0.1
0.1
Typ
760
1
8
1
2
4
PLL input clock (f
3)
6)
6)
= 4.5 to 5.5V
4)
4)
3)
3)
25.
PLL
Max
+2
10
cycles
+1
+2
Unit
V
3)
2)
accuracy
Unit
MHz
85/124
kHz
kHz
ms
ms
µA
µA
µs
%
%
%
%
%
%
PLL
)
1