SAK-C505L Infineon Technologies AG, SAK-C505L Datasheet - Page 11

• Manufacturer Part Number: SAK-C505L
• Description: 8-bit CMOS Microcontroller
• Manufacturer: Infineon Technologies AG

Table 1
Pin Definitions and Functions (cont’d)
Symbol
XTAL2
XTAL1
XTAL4
XTAL3
*) I = Input
Data Sheet
O = Output
Pin Number
47
48
51
52
I/O*)
O
I
O
I
Function
XTAL2
Output of the inverting oscillator amplifier.
XTAL1
Input to the inverting oscillator amplifier and input to the
internal clock generator circuits.
To drive the device from an external clock source, XTAL1
should be driven, while XTAL2 is left unconnected. To
operate above a frequency of 16 MHz, a duty cycle of 50%
should be maintained.
Minimum and maximum high and low times as well as rise/
fall times specified in the AC characteristics (refer to data
Sheet) must be observed.
XTAL4
Output of the inverting real-time clock oscillator amplifier.
XTAL3
Input to the inverting real-time clock oscillator amplifier.
To drive the real-time clock from an external clock source,
XTAL3 should be driven, while XTAL4 is left unconnected.
Minimum and maximum high and low times as well as rise/
fall times specified in the AC characteristics (refer to Data
sheet) must be observed.
9
C505L
06.99