ATTINY5-MAHR Atmel, ATTINY5-MAHR Datasheet - Page 109

• Manufacturer Part Number: ATTINY5-MAHR
• Description: IC MCU AVR 512B FLASH 8UDFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY5-MAHR

• Package / Case: 8-UDFN Exposed Pad
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 12MHz
• Number Of I /o: 4
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 32 x 8
• Program Memory Size: 512B (512 x 8)
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Peripherals: POR, PWM, WDT
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

15.3
15.3.1
8127D–AVR–02/10
Non-Volatile Memories
Non-Volatile Memory Lock Bits
The ATtiny4/5/9/10 have the following, embedded NVM:
The ATtiny4/5/9/10 provide two Lock Bits, as shown in
Table 15-1.
The Lock Bits can be left unprogrammed ("1") or can be programmed ("0") to obtain the addi-
tional security shown in
command, only.
Table 15-2.
Notes:
• Non-Volatile Memory Lock Bits
• Flash memory with four separate sections
Lock Mode
Lock Bit
NVLB2
NVLB1
1
2
3
1. Program the configuration section bits before programming NVLB1 and NVLB2.
2. "1" means unprogrammed, "0" means programmed
Memory Lock Bits
Lock Bit Byte
Lock Bit Protection Modes
NVLB2
Bit No
1
1
0
7
6
5
4
3
2
1
0
(2)
Table
(1)
Description
Non-Volatile Lock Bit
Non-Volatile Lock Bit
NVLB1
15-2. Lock Bits can be erased to "1" with the Chip Erase
1
0
0
(2)
Protection Type
No Memory Lock feature Enabled
Further Programming of the Flash memory is disabled in
the external programming mode. The configuration
section bits are locked in the external programming
mode
Further programming and verification of the flash is
disabled in the external programming mode. The
configuration section bits are locked in the external
programming mode
Table
15-1.
1 (unprogrammed)
1 (unprogrammed)
Default Value
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
ATtiny4/5/9/10
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