ATTINY87-15SZ Atmel, ATTINY87-15SZ Datasheet - Page 227
![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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21.2.1
21.3
7728G–AVR–06/10
Signature Bytes
Latching of Fuses
Table 21-5.
Notes:
The fuse values are latched when the device enters programming mode and changes of the
fuse values will have no effect until the part leaves Programming mode. This does not apply to
the EESAVE Fuse which will take effect once it is programmed. The fuses are also latched on
Power-up in Normal mode.
All Atmel microcontrollers have a three-byte signature code which identifies the device. This
code can be read in both serial and parallel mode, also when the device is locked. The three
bytes reside in a separate address space.
Table 21-6.
Fuse Low Byte
CKDIV8
CKOUT
SUT1
SUT0
CKSEL3
CKSEL2
CKSEL1
CKSEL0
Device
ATtiny87
ATtiny167
1. The default value of SUT1..0 results in maximum start-up time for the default clock source.
2. The default setting of CKSEL3..0 results in internal RC Oscillator @ 8 MHz. See
3. The CKOUT Fuse allows the system clock to be output on PORTB5.
4.
(3)
(4)
See
on page 27
fer” on page 31.
See ”System Clock Prescaler” on page
Fuse Low Byte
Signature Bytes
Table 4-4 on page 27
Bit No
for details.
Address
7
6
5
4
3
2
1
0
0
1
2
0
1
2
for details.
Description
Divide clock by 8
Clock output
Select start-up time
Select start-up time
Select Clock source
Select Clock source
Select Clock source
Select Clock source
Value
0x1E
0x93
0x87
0x1E
0x94
0x87
for details.
Signature Byte Description
Indicates manufactured by Atmel
Indicates 8 KB Flash memory
Indicates ATtiny87 device when address 1 contains
0x93
Indicates manufactured by Atmel
Indicates 16 KB Flash memory
Indicates ATtiny167 device when address 1 contains
0x94
37.for details.
ATtiny87/ATtiny167
Default Value
0 (programmed)
1 (unprogrammed)
1 (unprogrammed)
0 (programmed)
0 (programmed)
0 (programmed)
1 (unprogrammed)
0 (programmed)
See ”Clock Output Buf-
(1)
(2)
(2)
(2)
(1)
(2)
Table 4-3
227
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