ATMEGA88V-10AU Atmel, ATMEGA88V-10AU Datasheet - Page 216
![IC AVR MCU 8K 10MHZ 1.8V 32TQFP](/photos/6/91/69154/313-32-tqfp_sml.jpg)
ATMEGA88V-10AU
Manufacturer Part Number
ATMEGA88V-10AU
Description
IC AVR MCU 8K 10MHZ 1.8V 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA88V-10AU
Core Processor
AVR
Core Size
8-Bit
Speed
10MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K 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
ATMEGA8x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
2-Wire, SPI, USART, Serial
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
23
Number Of Timers
3 bit
Operating Supply Voltage
1.8 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Package
32TQFP
Device Core
AVR
Family Name
ATmega
Maximum Speed
10 MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA88V-10AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATMEGA88V-10AUR
Manufacturer:
Atmel
Quantity:
1 991
- Current page: 216 of 378
- Download datasheet (8Mb)
21.5.3
21.5.4
21.5.5
216
ATmega48/88/168
Bus Interface Unit
Address Match Unit
Control Unit
that slaves may prolong the SCL low period, thereby reducing the average TWI bus clock
period. The SCL frequency is generated according to the following equation:
• TWBR = Value of the TWI Bit Rate Register.
• PrescalerValue = Value of the prescaler, see
Note:
This unit contains the Data and Address Shift Register (TWDR), a START/STOP Controller and
Arbitration detection hardware. The TWDR contains the address or data bytes to be transmitted,
or the address or data bytes received. In addition to the 8-bit TWDR, the Bus Interface Unit also
contains a register containing the (N)ACK bit to be transmitted or received. This (N)ACK Regis-
ter is not directly accessible by the application software. However, when receiving, it can be set
or cleared by manipulating the TWI Control Register (TWCR). When in Transmitter mode, the
value of the received (N)ACK bit can be determined by the value in the TWSR.
The START/STOP Controller is responsible for generation and detection of START, REPEATED
START, and STOP conditions. The START/STOP controller is able to detect START and STOP
conditions even when the AVR MCU is in one of the sleep modes, enabling the MCU to wake up
if addressed by a Master.
If the TWI has initiated a transmission as Master, the Arbitration Detection hardware continu-
ously monitors the transmission trying to determine if arbitration is in process. If the TWI has lost
an arbitration, the Control Unit is informed. Correct action can then be taken and appropriate
status codes generated.
The Address Match unit checks if received address bytes match the seven-bit address in the
TWI Address Register (TWAR). If the TWI General Call Recognition Enable (TWGCE) bit in the
TWAR is written to one, all incoming address bits will also be compared against the General Call
address. Upon an address match, the Control Unit is informed, allowing correct action to be
taken. The TWI may or may not acknowledge its address, depending on settings in the TWCR.
The Address Match unit is able to compare addresses even when the AVR MCU is in sleep
mode, enabling the MCU to wake up if addressed by a Master. If another interrupt (for example,
INT0) occurs during TWI Power-down address match and wakes up the CPU, the TWI aborts
operation and return to it’s idle state. If this cause any problems, ensure that TWI Address Match
is the only enabled interrupt when entering Power-down.
The Control unit monitors the TWI bus and generates responses corresponding to settings in the
TWI Control Register (TWCR). When an event requiring the attention of the application occurs
on the TWI bus, the TWI Interrupt Flag (TWINT) is asserted. In the next clock cycle, the TWI Sta-
tus Register (TWSR) is updated with a status code identifying the event. The TWSR only
contains relevant status information when the TWI Interrupt Flag is asserted. At all other times,
the TWSR contains a special status code indicating that no relevant status information is avail-
able. As long as the TWINT Flag is set, the SCL line is held low. This allows the application
software to complete its tasks before allowing the TWI transmission to continue.
Pull-up resistor values should be selected according to the SCL frequency and the capacitive bus
line load. See
Table 28-5 on page 307
SCL frequency
=
---------------------------------------------------------------------------------------- -
16
+
for value of pull-up resistor.
2(TWBR)
CPU Clock frequency
Table 21-7 on page
⋅
(
PrescalerValue
237.
)
2545S–AVR–07/10
Related parts for ATMEGA88V-10AU
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![ATMEGA88V-10AI](/photos/6/91/69154/313-32-tqfp_tmb.jpg)
Part Number:
Description:
IC MCU AVR 8K 5V 10MHZ 32-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA88V-10MU](/photos/12/43/124395/atmega88v-10mu_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 10MHZ 1.8V 32-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA88V-10AJ](/photos/6/91/69154/313-32-tqfp_tmb.jpg)
Part Number:
Description:
IC MCU AVR 8K 5V 10MHZ 32-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA88V-10MI](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
IC MCU AVR 8K 5V 10MHZ 32-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA88V-10MJ](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
IC MCU AVR 8K 5V 10MHZ 32-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA88V-10PI](/photos/7/21/72189/453-28-dip_tmb.jpg)
Part Number:
Description:
IC MCU AVR 8K 5V 10MHZ 28-DIP
Manufacturer:
Atmel
Datasheet:
![ATMEGA88V-10PJ](/photos/7/21/72189/453-28-dip_tmb.jpg)
Part Number:
Description:
IC MCU AVR 8K 5V 10MHZ 28-DIP
Manufacturer:
Atmel
Datasheet:
![ATMEGA88V-10AUR](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
MCU AVR 8K FLASH 10MHZ 32TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA88V-10MUR](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
MCU AVR 8K FLASH 10MHZ 32QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA88V-10PU](/photos/7/21/72189/453-28-dip_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 10MHZ 1.8V 28DIP
Manufacturer:
Atmel
Datasheet:
![ATMEGA88-20AI](/photos/6/91/69154/313-32-tqfp_tmb.jpg)
Part Number:
Description:
IC MCU AVR 8K 5V 20MHZ 32-TQFP
Manufacturer:
Atmel
Datasheet:
![ATmega88](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet: