ST10F269-DP STMicroelectronics, ST10F269-DP Datasheet - Page 137

• Manufacturer Part Number: ST10F269-DP
• Description: MCU 16BIT 256K FLASH 144PQFP
• Manufacturer: STMicroelectronics
• Series: ST10r

Specifications of ST10F269-DP

• Core Processor: ST10
• Core Size: 16-Bit
• Speed: 40MHz
• Connectivity: CAN, EBI/EMI, 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: 12K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 144-BFQFP
• Processor Series: ST10F26x
• Core: ST10
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: No

The mechanism used to generate the CPU clock is selected during reset by the logic levels on pins
P0.15-13 (P0H.7-5).
Figure 67 : Generation Mechanisms for the CPU Clock
21.4.3 - Clock Generation Modes
The Table 34 associates the combinations of these three bits with the respective clock generation mode.
Table 34 : CPU Frequency Generation
Notes: 1. The external clock input range refers to a CPU clock range of 1...40MHz.
P0H.7 P0H.6 P0H.5 CPU Frequency f
1
1
1
1
0
0
0
0
2. The maximum input frequency depends on the duty cycle of the external clock signal.
3. The maximum input frequency is 25MHz when using an external crystal with the internal oscillator; providing that internal serial
resistance of the crystal is less than 40 . However, higher frequencies can be applied with an external clock source on pin XTAL1,
but in this case, the input clock signal must reach the defined levels V
1
1
0
0
1
1
0
0
Phase locked loop operation
Direct Clock Drive
Prescaler Operation
f
f
f
f
f
f
XTAL
CPU
XTAL
CPU
XTAL
CPU
1
0
1
0
1
0
1
0
f
f
f
XTAL
XTAL
XTAL
f
f
f
f
f
XTAL
XTAL
XTAL
XTAL
XTAL
x 1.5
x 0.5
x 2.5
x 4
x 3
x 2
x 5
x 1
CPU
= f
XTAL
x F External Clock Input Range
IL
3.33 to 13.33MHz
6.66 to 26.66MHz
and V
2.5 to 10MHz
5 to 20MHz
1 to 40MHz
2 to 80MHz
4 to 16MHz
2 to 8MHz
IH2.
.
TCL
TCL
TCL TCL
TCL TCL
1
Default configuration
Direct drive
CPU clock via prescaler
Notes
2
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