ATtiny87 Atmel Corporation, ATtiny87 Datasheet - Page 247
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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
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22.6
8265B–AVR–09/10
Internal Voltage Characteristics
Table 22-5.
Notes:
Table 22-6.
Table 22-7.
Symbol
Symbol
V
V
t
I
BG
BG
t
BG
HYST
BOD
BODLEVEL[2:0] Fuses
1. V
where this is the case, the device is tested down to V
This guarantees that a Brown-Out Reset will occur before V
rect operation of the microcontroller is no longer guaranteed. The test is performed using
BODLEVEL = 101 for Low Operating Voltage and BODLEVEL = 100 for High operating
Voltage.
Parameter
Bandgap reference voltage
Bandgap reference start-up time
Bandgap reference current consumption
BOT
Parameter
Brown-out Detector Hysteresis
Min Pulse Width on Brown-out Reset
BODLEVEL Fuse Coding
Brown-out Characteristics
Internal Voltage Reference Characteristics
1 1 1
1 1 0
1 0 1
1 0 0
0 1 1
0 1 0
0 0 1
0 0 0
may be below nominal minimum operating voltage for some devices. For devices
b
b
b
b
b
b
b
b
Min. V
1.7
2.5
4.1
BOT
(1)
Condition
T
T
T
V
V
V
A
A
A
CC
CC
CC
Typ. V
Reserved
= 25°C
= 25°C
= 25°C
= 4.5
= 4.5
= 4.5
1.8
2.7
4.3
BOD Disabled
CC
BOT
Min.
= V
BOT
CC
Min.
1.0
drops to a voltage where cor-
during the production test.
Typ.
80
Max. V
2
Typ.
1.1
40
10
2.0
2.9
4.5
BOT
Max.
Max.
1.2
70
Units
Units
mV
Units
µs
V
µA
µs
V
247
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