ATTINY88-AU Atmel, ATTINY88-AU Datasheet - Page 31
![MCU AVR 8K ISP FLASH 1.8V 32TQFP](/photos/6/91/69154/313-32-tqfp_sml.jpg)
ATTINY88-AU
Manufacturer Part Number
ATTINY88-AU
Description
MCU AVR 8K ISP FLASH 1.8V 32TQFP
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY88-AU
Core Processor
AVR
Core Size
8-Bit
Speed
12MHz
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)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP, 32-VQFP
Processor Series
ATTINY8x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
2-Wire/I2S/SPI
Maximum Clock Frequency
12 MHz
Number Of Programmable I/os
28
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATQT600, ATAVRTS2080B
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVR
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY88-AU
Manufacturer:
ATMEL
Quantity:
5 000
Company:
Part Number:
ATTINY88-AU
Manufacturer:
ATMEL
Quantity:
3 000
Part Number:
ATTINY88-AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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6.2.3
6.2.4
6.3
8008G–AVR–04/11
System Clock Prescaler
Internal 128 kHz Oscillator
Default Clock Source
When this oscillator is used as the chip clock, the Watchdog oscillator will still be used for the
Watchdog Timer and for the Reset Time-out. For more information on the pre-programmed cali-
bration value, see the section
When this oscillator is selected, start-up times are determined by the SUT Fuses as shown in
the table below.
Table 6-3.
Note:
The 128 kHz internal oscillator is a low power oscillator providing a clock of 128 kHz. The fre-
quency depends on supply voltage, temperature and patch variations. This clock may be
selected as the system clock by programming the CKSEL Fuses to “11”.
When this clock source is selected, start-up times are determined by the SUT Fuses as shown in
Table
Table 6-4.
Note:
The device is shipped with internal oscillator at 8.0 MHz and with the fuse CKDIV8 programmed,
resulting in 1.0 MHz system clock. The startup time is set to maximum and time-out period
enabled (CKSEL = 0b10, SUT = 0b10, CKDIV8 = 0). The default setting ensures that all users
can make their desired clock source setting using any available programming interface.
The ATtiny48/88 has a system clock prescaler, and the system clock can be divided by setting
the
system clock frequency and the power consumption when the requirement for processing power
SUT[1:0]
SUT[1:0]
“CLKPR – Clock Prescale Register” on page
10
00
01
11
00
01
10
11
6-4.
(2)
1. If the RSTDISBL fuse is programmed, this start-up time will be increased to 14CK + 4 ms to
2.
1. If the RSTDISBL fuse is programmed, this start-up time will be increased to 14CK + 4 ms to
The device is shipped with this option selected.
ensure programming mode can be entered.
ensure programming mode can be entered.
Power Conditions
BOD enabled
Fast rising power
Slowly rising power
Start-up Times for the Internal Calibrated Oscillator Clock Selection
Start-up Times for the 128 kHz Internal Oscillator
Power Conditions
BOD enabled
Fast rising power
Slowly rising power
“Calibration Byte” on page
from Power-down
from Power-down
Start-up Time
Start-up Time
6 CK
6 CK
6 CK
34. This feature can be used to decrease the
Reserved
Reserved
6 CK
6 CK
6 CK
190.
from Reset (V
ATtiny48/88
Additional Delay
Additional Delay
14CK + 64 ms
14CK + 4 ms
14CK + 64 ms
from Reset
14CK + 4 ms
14CK
14CK
(1)
CC
(1)
= 5.0V)
31
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