ATtiny87 Atmel Corporation, ATtiny87 Datasheet - Page 230
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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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATtiny87-A15MZ
Manufacturer:
Atmel
Quantity:
12 127
Company:
Part Number:
ATtiny87-A15SZ
Manufacturer:
Atmel
Quantity:
3 722
Company:
Part Number:
ATtiny87-A15XZ
Manufacturer:
Atmel
Quantity:
8 895
Part Number:
ATtiny87-SU
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Company:
Part Number:
ATtiny87-SUR
Manufacturer:
Atmel
Quantity:
323
Company:
Part Number:
ATtiny87-XUR
Manufacturer:
ATMEL
Quantity:
8 272
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ATtiny87/ATtiny167
Table 21-10. Pin Values Used to Enter Programming Mode
Table 21-11. XA1 and XA0 Coding
Table 21-12. Command Byte Bit Coding
XA1
0
0
1
1
Command Byte
1000 0000
0100 0000
0010 0000
0001 0000
0001 0001
0000 1000
0000 0100
0000 0010
0000 0011
PAGEL / BS1
XA1 / BS2
XA0
XA0
WR
Pin
0
1
0
1
b
b
b
b
b
b
b
b
b
Action when XTAL1 is Pulsed
Load Flash or EEPROM Address (High or low address byte determined by
BS1).
Load Data (High or Low data byte for Flash determined by BS1).
Load Command
No Action, Idle
Command Executed
Chip Erase
Write Fuse bits
Write Lock bits
Write Flash
Write EEPROM
Read Signature bytes and Calibration byte
Read Fuse and Lock bits
Read Flash
Read EEPROM
Prog_enable[3]
Prog_enable[2]
Prog_enable[1]
Prog_enable[0]
Symbol
Value
0
0
0
0
8265B–AVR–09/10
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