ATTINY87-15XZ Atmel, ATTINY87-15XZ Datasheet - Page 42
![MCU AVR 8K FLASH 15MZ 20-TSSOP](/photos/6/80/68045/313-20-tssop_sml.jpg)
ATTINY87-15XZ
Manufacturer Part Number
ATTINY87-15XZ
Description
MCU AVR 8K FLASH 15MZ 20-TSSOP
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY167-15MD.pdf
(283 pages)
Specifications of ATTINY87-15XZ
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-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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5. Power Management and Sleep Modes
5.1
42
Sleep Modes
ATtiny87/ATtiny167
Sleep modes enable the application to shut down unused modules in the MCU, thereby saving
power. The AVR provides various sleep modes allowing the user to tailor the power consump-
tion to the application’s requirements.
When enabled, the Brown-out Detector (BOD) actively monitors the power supply voltage dur-
ing the sleep periods. To further save power, it is possible to disable the BOD in some sleep
modes. See
Figure 4-1 on page 24
tribution. The figure is helpful in selecting an appropriate sleep mode.
different sleep modes, their wake up sources and BOD disable ability.
Table 5-1.
Note:
To enter any of the four sleep modes, the SE bit in SMCR must be written to logic one and a
SLEEP instruction must be executed. The SM1, and SM0 bits in the SMCR Register select
which sleep mode (Idle, ADC Noise Reduction, Power-down, or Power-save) will be activated
by the SLEEP instruction. See
If an enabled interrupt occurs while the MCU is in a sleep mode, the MCU wakes up. The MCU
is then halted for four cycles in addition to the start-up time, executes the interrupt routine, and
resumes execution from the instruction following SLEEP. The contents of the Register File
and SRAM are unaltered when the device wakes up from sleep. If a reset occurs during sleep
mode, the MCU wakes up and executes from the Reset Vector.
Idle
ADC Noise
Reduction
Power-down
Power-Save
Sleep Mode
1. For INT1 and INT0, only level interrupt.
“BOD Disable” on page 43
Active Clock Domains and Wake-up Sources in the Different Sleep Modes
Active Clock Domains
presents the different clock systems in the ATtiny87/167, and their dis-
X
Table 5-2 on page 47
X
X
X
X
X
for more details.
Oscillators
X
X
X
X
X
for a summary.
X
X
X
X
(1)
(1)
(1)
Wake-up Sources
X
X
X
X
X
X
X
X
Table 5-1
X
X
X
X
7728G–AVR–06/10
X
X
X
shows the
X
X
X
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