ST10F272M-4TR3 STMicroelectronics, ST10F272M-4TR3 Datasheet - Page 145
ST10F272M-4TR3
Manufacturer Part Number
ST10F272M-4TR3
Description
MCU 16BIT 256K FLASH 144-LQFP
Manufacturer
STMicroelectronics
Series
ST10r
Datasheet
1.ST10F272M-4TR3.pdf
(176 pages)
Specifications of ST10F272M-4TR3
Core Processor
ST10
Core Size
16-Bit
Speed
40MHz
Connectivity
ASC, CAN, EBI/EMI, I²C, SSC, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
111
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
20K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 24x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
144-MQFP, 144-PQFP
Processor Series
ST10F27x
Core
ST10
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ST10F272M-4TR3
Manufacturer:
STMicroelectronics
Quantity:
10 000
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ST10F272M
24.8.8
Voltage controlled oscillator
The ST10F272M implements a PLL which combines different levels of frequency dividers
with a voltage controlled oscillator (VCO) working as frequency multiplier. The following
table gives a detailed summary of the internal settings and VCO frequency.
Table 62.
1. The PLL input frequency range is limited to 1 to 3.5 MHz, while the VCO oscillation range is 64 to
Example 1
●
●
●
●
●
Example 2
●
●
●
●
●
●
1
1
1
1
0
0
0
0
(P0H.7-5)
P0.15-13
128 MHz. The CPU clock frequency range when PLL is used is 16 to 40 MHz.
f
P0(15:13) = ‘110’ (multiplication by 3)
PLL input frequency = 1 MHz
VCO frequency = 48 MHz: NOT VALID, must be 64 to 128 MHz
f
f
P0(15:13) = ‘100’ (multiplication by 5)
PLL input frequency = 2 MHz
VCO frequency = 80 MHz
PLL output frequency = 40 MHz (VCO frequency divided by 2)
f
XTAL
CPU
XTAL
CPU
1
1
0
0
1
1
0
0
= NOT VALID
= 40 MHz (no effect of output prescaler)
= 4 MHz
= 8 MHz
1
0
1
0
1
0
1
0
Internal PLL divider mechanism
XTAL frequency
5.3 to 8 MHz
6.4 to 8 MHz
4 to 8 MHz
1 to 40 MHz
4 to 8 MHz
4 to 5 MHz
4 MHz
(1)
(1)
(1)
prescaler
f
f
f
f
f
Input
XTAL
XTAL
XTAL
XTAL
XTAL
–
–
/4
/4
/4
/4
/2
Multiply by Divide by
PLL bypassed
PLL bypassed
64
48
64
40
40
PLL
–
4
4
2
2
2
Electrical characteristics
prescaler
Output
f
PLL
–
–
–
–
–
–
/2
f
CPU frequency
CPU
f
f
f
f
f
f
XTAL
XTAL
XTAL
XTAL
XTAL
XTAL
f
= f
XTAL
XTAL
x 10
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