ST72F561K9TA STMicroelectronics, ST72F561K9TA Datasheet - Page 21

• Manufacturer Part Number: ST72F561K9TA
• Description: IC MCU 8BIT 60K FLASH 32-LQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F561K9TA

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: CAN, LINSCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 3.8 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• For Use With: 497-8374 - BOARD DEVELOPMENT FOR ST72F561
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

6 SUPPLY, RESET AND CLOCK MANAGEMENT
The device includes a range of utility features for
securing the application in critical situations (for
example, in case of a power brown-out), and re-
ducing the number of external components. An
overview is shown in
For more details, refer to dedicated parametric
section.
Main features
■
■
■
■
Figure 11. Clock, Reset and Supply Block Diagram
RESET
OSC2
OSC1
– 4 Crystal/Ceramic resonator oscillators
– Main supply Low voltage detection (LVD)
– Auxiliary Voltage detector (AVD) with interrupt
V
V
Optional PLL for multiplying the frequency by 2
Reset Sequence Manager (RSM)
Multi-Oscillator Clock Management (MO)
System Integrity Management (SI)
SS
DD
capability for monitoring the main supply
OSCILLATOR
RESET SEQUENCE
Figure
MULTI-
(MO)
MANAGER
(RSM)
11.
f
OSC
(option)
PLL
f
OSC2
SICSR
SYSTEM INTEGRITY MANAGEMENT
0
AVD AVD LVD
IE
AVD Interrupt Request
6.1 PHASE LOCKED LOOP
If the clock frequency input to the PLL is in the
range 2 to 4 MHz, the PLL can be used to multiply
the frequency by two to obtain an f
MHz. The PLL is enabled by option byte. If the PLL
is disabled, then f
Caution: The PLL is not recommended for appli-
cations where timing accuracy is required.
“PLL Characteristics” on page 228.
Figure 10. PLL Block Diagram
AUXILIARY VOLTAGE
F
LOW VOLTAGE
f
RF
OSC
DETECTOR
DETECTOR
(AVD)
(LVD)
0
/ 8000
0
PLL x 2
0
OSC2
/ 2
WDG
RF
= f
OSC
CLOCK (MCC/RTC)
WITH REALTIME
PLL OPTION BIT
TIMER (WDG)
CONTROLLER
MAIN CLOCK
WATCHDOG
/2.
8-BIT TIMER
0
1
OSC2
ST72561
of 4 to 8
f
OSC2
21/265
f
See
CPU