ST72344S4 STMicroelectronics, ST72344S4 Datasheet - Page 204

• Manufacturer Part Number: ST72344S4
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST72344S4

• Up To 16 Kbytes Program Memory: single voltage extended Flash (XFlash) with readout and write protection, in-circuit and inapplication programming (ICP and IAP). 10K write/erase cycles guaranteed, data retention
• 256 Bytes Data Eeprom With Readout Protection. 300k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55 °C.
• Clock Sources: crystal/ceramic resonator oscillators, high-accuracy internal RC oscillator or external clock
• 5 Power-saving Modes: Slow, Wait, Halt, Auto-wakeup from Halt and Active-halt
• 16-bit Timer A With: 1 input capture, 1 output compares, external clock input, PWM and pulse generator modes
• 16-bit Timer B With: 2 input captures, 2 output compares, PWM and pulse generator modes

Electrical characteristics
13.4
Table 92.
1. If the RC oscillator clock is selected, to improve clock stability and frequency accuracy, it is recommended to place a
2. See
3. Expected results. Data based on characterization, not tested in production
Figure 88. Typical RC frequency vs. RCCR
204/247
f
ACC
I
t
Symbol
RC
DD(RC)
su(RC)
decoupling capacitor, typically 100 nF, between the V
It is also recommended to perform the calibration on board.
RC
Internal RC oscillator on page 45
Internal RC oscillator
frequency
Accuracy of Internal RC
oscillator with
RCCR=RCCR0
RC oscillator current
consumption
RC oscillator setup time
Internal RC oscillator characteristics
Internal RC oscillator characteristics
Parameter
(1)
(2)
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0
RCCR = FF (reset value), T
V
RCCR = RCCR0
RCCR = FF (reset value), T
V
RCCR = RCCR1
T
T
T
T
T
T
T
A
A
A
A
A
A
A
DD
DD
= 25 °C, V
= 25 to +85 °C, V
= 25 to +85 °C, V
= -40 to +25 °C, V
= 25 °C, V
= 25 °C, V
= 25 °C, V
Typical Rc freq (MHz) = f(RCCR) @ 25°C
= 3 V
50
= 5 V
Doc ID 12321 Rev 5
DD
DD
DD
DD
DD
100
Conditions
= 4.5 to 5.5 V
= 5 V
= 5 V
and V
= 5 V
(2)
(2)
RCCR (decimal)
, T
, T
DD
DD
DD
A
A
SS
= 25 °C, V
= 25 °C, V
= 5 V
= 4.5 to 5.5 V
= 4.5 to 5.5 V
pins as close as possible to the ST7 device.
150
A
A
(3)
= 25 °C,
= 25 °C,
(3)
DD
DD
= 3 V
(3)
= 5 V
(3)
200
Rc @ 5V
Rc @ 3V
Min
-3.5
-1
-1
-3
-3
250
ST72344xx ST72345xx
600
1000
1000
Typ
625
612
(3)
10
Max
+3.5
+1
+1
+3
+7
(2)
Unit
kHz
μA
μs
%
%
%
%
%