ATTINY2313V-10PJ Atmel, ATTINY2313V-10PJ Datasheet - Page 139
ATTINY2313V-10PJ
Manufacturer Part Number
ATTINY2313V-10PJ
Description
IC MCU AVR 2K FLASH 20DIP
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY2313V-10PJ
Core Processor
AVR
Core Size
8-Bit
Speed
10MHz
Connectivity
SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
18
Program Memory Size
2KB (1K x 16)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Other names
ATTINY2313V-12PJ
ATTINY2313V-12PJ
ATTINY2313V-12PJ
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Functional
Descriptions
Three-wire Mode
2543L–AVR–08/10
The Two-wire clock control unit can generate an interrupt when a start condition is detected on
the Two-wire bus. It can also generate wait states by holding the clock pin low after a start con-
dition is detected, or after the counter overflows.
The USI Three-wire mode is compliant to the Serial Peripheral Interface (SPI) mode 0 and 1, but
does not have the slave select (SS) pin functionality. However, this feature can be implemented
in software if necessary. Pin names used by this mode are: DI, DO, and USCK.
Figure 61. Three-wire Mode Operation, Simplified Diagram
Figure 61
The two Shift Registers are interconnected in such way that after eight USCK clocks, the data in
each register are interchanged. The same clock also increments the USI’s 4-bit counter. The
Counter Overflow (interrupt) Flag, or USIOIF, can therefore be used to determine when a trans-
fer is completed. The clock is generated by the Master device software by toggling the USCK pin
via the PORT Register or by writing a one to the USITC bit in USICR.
Figure 62. Three-wire Mode, Timing Diagram
CYCLE
USCK
USCK
SLAVE
MASTER
DO
DI
shows two USI units operating in Three-wire mode, one as Master and one as Slave.
Bit7
Bit7
( Reference )
Bit6
Bit6
A
Bit5
Bit5
B
MSB
Bit4
Bit4
MSB
C
1
Bit3
Bit3
D
Bit2
Bit2
2
6
6
Bit1
Bit1
Bit0
Bit0
3
5
5
4
4
4
5
3
3
PORTxn
6
2
2
USCK
USCK
DO
DO
DI
DI
7
1
1
LSB
LSB
8
E
139
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