ATtiny87 Atmel Corporation, ATtiny87 Datasheet - Page 242
ATtiny87
Manufacturer Part Number
ATtiny87
Description
Manufacturer
Atmel Corporation
Specifications of ATtiny87
Flash (kbytes)
8 Kbytes
Pin Count
20
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
Hardware Qtouch Acquisition
No
Max I/o Pins
16
Ext Interrupts
16
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Lin
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
0.5
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
2
Output Compare Channels
3
Input Capture Channels
1
Pwm Channels
9
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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242
Byte 1
Serial Programming Characteristics
ATtiny87/ATtiny167
Load Program Memory Page (High/Low Byte) /
Load EEPROM Memory Page (Page Access)
Bit 15
B
Byte 2
Addr. MSB
Figure 21-8. Serial programming Instruction Example
Figure 21-9. Serial Programming Waveforms
SERIAL DA TA OUTPUT
For characteristics of the SPI module,
SERIAL CLOCK INPUT
SERIAL DA TA INPUT
Byte 3
Addr. LSB
SAMPLE
(MOSI)
(MISO)
Page Offset
(SCK)
0
Serial Programming Instruction
Byte 4
Program Memory /
EEPROM Memory
MSB
MSB
Page Buffer
Page N-1
Page 0
Page 1
Page 2
See ”SPI Timing Characteristics” on page 253.
Byte 1
Page Number
Bit 15
Write Program Memory Page /
Write EEPROM Memory Page
Addr. MSB
B
Byte 2
Byte 3
Addr. MSB
0
8265B–AVR–09/10
LSB
LSB
Byte 4
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