ATTINY2313-20SI Atmel, ATTINY2313-20SI Datasheet - Page 158

• Manufacturer Part Number: ATTINY2313-20SI
• Description: IC MCU AVR 2K FLASH 20SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY2313-20SI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• 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): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -
• Other names: ATTINY2313-24SI; ATTINY2313-24SI

Memory
Programming
Program And Data
Memory Lock Bits
158
ATtiny2313
The ATtiny2313 provides two Lock bits which can be left unprogrammed (“1”) or can be pro-
grammed (“0”) to obtain the additional features listed in
erased to “1” with the Chip Erase command.
Table 64. Lock Bit Byte
Note:
Table 65. Lock Bit Protection Modes
Notes:
LB2
LB1
LB Mode
Lock Bit Byte
1
2
3
Memory Lock Bits
1. “1” means unprogrammed, “0” means programmed
1. Program the Fuse bits and Boot Lock bits before programming the LB1 and LB2.
2. “1” means unprogrammed, “0” means programmed
LB2
1
1
0
(1)
LB1
Bit No
1
0
0
7
6
5
4
3
2
1
0
Protection Type
No memory lock features enabled.
Further programming of the Flash and EEPROM is
disabled in Parallel and Serial Programming mode. The
Fuse bits are locked in both Serial and Parallel
Programming mode.
Further programming and verification of the Flash and
EEPROM is disabled in Parallel and Serial Programming
mode. The Boot Lock bits and Fuse bits are locked in both
Serial and Parallel Programming mode.
(1)(2)
Description
–
–
–
–
–
–
Lock bit
Lock bit
(1)
Table
Default Value
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
65. The Lock bits can only be
(1)
2543L–AVR–08/10