ST10F269-T3 STMicroelectronics, ST10F269-T3 Datasheet - Page 137

• Manufacturer Part Number: ST10F269-T3
• Manufacturer: STMicroelectronics

Specifications of ST10F269-T3

• Cpu Family: ST10
• Device Core Size: 16b
• Frequency (max): 32MHz
• Interface Type: ASC/I2C/SSC
• Program Memory Type: Flash
• Program Memory Size: 256KB
• Total Internal Ram Size: 12KB
• # I/os (max): 111
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• On-chip Adc: 16-chx10-bit
• Instruction Set Architecture: CISC/RISC
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 144
• Package Type: TQFP
• Lead Free Status / Rohs Status: Supplier Unconfirmed

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...32MHz.
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 32MHz when using an external crystal with the internal oscillator; providing that internal serial
resistance of the crystal is less than 40Ω. 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 10.67MHz
6.67 to 21.33MHz
and V
4 to 12.8MHz
2.5 to 8MHz
2 to 6.4MHz
5 to 16MHz
1 to 32MHz
2 to 64MHz
IH2.
.
TCL
TCL
TCL TCL
TCL TCL
1
Default configuration
Direct drive
CPU clock via prescaler
ST10F269-T3
Notes
2
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