Datasheet AT90S8515 (Atmel) - 6
| Manufacturer | Atmel |
| Description | 8-bit AVR Microcontroller with 8K Bytes In-System Programmable Flash |
| Pages / Page | 112 / 6 — Crystal Oscillator XTAL1 and XTAL2 are input and output, respectively, of … |
| File Format / Size | PDF / 2.7 Mb |
| Document Language | English |
Crystal Oscillator XTAL1 and XTAL2 are input and output, respectively, of an inverting amplifier that can
Model Line for this Datasheet
- AT90S8515-4AC AT90S8515-4AI AT90S8515-4JC AT90S8515-4JI AT90S8515-4PC AT90S8515-4PI AT90S8515-8AC AT90S8515-8AI AT90S8515-8JC AT90S8515-8JI AT90S8515-8PC AT90S8515-8PI AT90S8515A-4AC AT90S8515A-4AI AT90S8515A-4JC AT90S8515A-4JI AT90S8515A-4PC AT90S8515A-4PI AT90S8515A-8AC AT90S8515A-8AI AT90S8515A-8JC AT90S8515A-8JI AT90S8515A-8PC AT90S8515A-8PI
Text Version of Document
Crystal Oscillator XTAL1 and XTAL2 are input and output, respectively, of an inverting amplifier that can
be configured for use as an on-chip oscillator, as shown in Figure 2. Either a quartz
crystal or a ceramic resonator may be used. To drive the device from an external clock
source, XTAL2 should be left unconnected while XTAL1 is driven as shown in Figure 3.
Figure 2. Oscillator Connections
MAX 1 HC BUFFER
HC C2
C1 XTAL2
XTAL1
GND Note: When using the MCU oscillator as a clock for an external device, an HC buffer should be
connected as indicated in the figure. Figure 3. External Clock Drive Configuration 6 AT90S8515
0841G–09/01
be configured for use as an on-chip oscillator, as shown in Figure 2. Either a quartz
crystal or a ceramic resonator may be used. To drive the device from an external clock
source, XTAL2 should be left unconnected while XTAL1 is driven as shown in Figure 3.
Figure 2. Oscillator Connections
MAX 1 HC BUFFER
HC C2
C1 XTAL2
XTAL1
GND Note: When using the MCU oscillator as a clock for an external device, an HC buffer should be
connected as indicated in the figure. Figure 3. External Clock Drive Configuration 6 AT90S8515
0841G–09/01
