ATtiny2313A Atmel Corporation, ATtiny2313A Datasheet - Page 194

• Manufacturer Part Number: ATtiny2313A
• Manufacturer: Atmel Corporation

Specifications of ATtiny2313A

• Flash (kbytes): 2 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 18
• Ext Interrupts: 18
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 0.12
• Eeprom (bytes): 128
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

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ATtiny2313A/4313
Figure 21-7. Serial Programming Signals
Note:
When programming the EEPROM, an auto-erase cycle is built into the self-timed programming
operation and there is no need to first execute the Chip Erase instruction. This applies for serial
programming mode, only.
The Chip Erase operation turns the content of every memory location in Flash and EEPROM
arrays into 0xFF.
Depending on CKSEL fuses, a valid clock must be present. The minimum low and high periods
for the serial clock (SCK) input are defined as follows:
• Minimum low period of serial clock:
• Minimum high period of serial clock:
– When f
– When f
– When f
– When f
If the device is clocked by the internal oscillator there is no need to connect a clock source to the
CLKI pin.
ck
ck
ck
ck
< 12MHz: > 2 CPU clock cycles
>= 12MHz: 3 CPU clock cycles
< 12MHz: > 2 CPU clock cycles
>= 12MHz: 3 CPU clock cycles
MOSI
MISO
SCK
XTAL1
RESET
GND
VCC
+1.8 - 5.5V
8246B–AVR–09/11