ATTINY88-15MZ Atmel, ATTINY88-15MZ Datasheet - Page 50

• Manufacturer Part Number: ATTINY88-15MZ
• Description: IC MCU AVR 8B 8KB FLASH 32QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY88-15MZ

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 28
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9.2.1
9.2.2
50
ATtiny88 Automotive
Low Level Interrupt
Pin Change Interrupt Timing
Low level interrupts on INT0 and INT1 are detected asynchronously. This means that the inter-
rupt sources can be used for waking the part also from sleep modes other than Idle (the I/O
clock is halted in all sleep modes except Idle mode).
Note that if a level triggered interrupt is used for wake-up from Power-down, the required level
must be held long enough for the MCU to complete the wake-up to trigger the level interrupt. If
the level disappears before the end of the Start-up Time, the MCU will still wake up, but no inter-
rupt will be generated. The start-up time is defined by the SUT and CKSEL Fuses as described
in
If the low level on the interrupt pin is removed before the device has woken up then program
execution will not be diverted to the interrupt service routine but continue from the instruction fol-
lowing the SLEEP command.
An example of timing of a pin change interrupt is shown in
Figure 9-1.
pcint_setflag
pcint_in_(0)
“System Clock and Clock Options” on page
PCINT(0)
pcint_syn
pin_sync
pin_lat
PCINT(0)
PCIF
clk
clk
Timing of pin change interrupts
LE
pin_lat
D
Q
pin_sync
PCINT(0) in PCMSK(x)
pcint_in_(0)
26.
0
x
clk
Figure
9-1.
pcint_syn
pcint_setflag
9157B–AVR–01/10
PCIF