ATTINY87-15SZ Atmel, ATTINY87-15SZ Datasheet - Page 28
![MCU AVR 8K FLASH 15MZ 32-SOIC](/photos/6/80/68042/453-20-soic_sml.jpg)
ATTINY87-15SZ
Manufacturer Part Number
ATTINY87-15SZ
Description
MCU AVR 8K FLASH 15MZ 32-SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY167-15MD.pdf
(283 pages)
Specifications of ATTINY87-15SZ
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, LIN, SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
16
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
20-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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4.2.4
28
ATtiny87/ATtiny167
Crystal Oscillator
XTAL1 and XTAL2 are input and output, respectively, of an inverting amplifier which can be
configured for use as an On-chip Oscillator, as shown in
a ceramic resonator may be used.
C1 and C2 should always be equal for both crystals and resonators. The optimal value of the
capacitors depends on the crystal or resonator in use, the amount of stray capacitance, and
the electromagnetic noise of the environment. Some initial guidelines for choosing capacitors
for use with crystals are given in
by the manufacturer should be used.
Figure 4-2.
The Oscillator can operate in three different modes, each optimized for a specific frequency
range. The operating mode is selected by CKSEL3..1 fuses or by CSEL3..1 field as shown in
Table
Table 4-6.
Notes:
CKSEL3..1
CSEL3..1
4-6.
100
101
110
111
1. Flash Fuse bits.
2. CLKSELR register bits.
3. This option should not be used with crystals, only with ceramic resonators.
(3)
(2)
(1)
Crystal Oscillator Connections
Crystal Oscillator Operating Modes
Frequency Range (MHz)
8.0 - 16.0
0.4 - 0.9
0.9 - 3.0
3.0 - 8.0
Table
C2
C1
4-6. For ceramic resonators, the capacitor values given
Recommended Range for Capacitors
C1 and C2 for Use with Crystals (pF)
XTAL2
XTAL1
GND
Figure
4-2. Either a quartz crystal or
12 - 22
12 - 22
12 - 22
–
7728G–AVR–06/10
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