ATTINY20-XUR Atmel, ATTINY20-XUR Datasheet - Page 171

• Manufacturer Part Number: ATTINY20-XUR
• Description: MCU AVR 2KB FLASH 12MHZ 14TSSOP
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY20-XUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 12MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 12
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Ram Size: 128 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: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

19.7.2
8235B–AVR–04/11
NVMCSR - Non-Volatile Memory Control and Status Register
• Bits 5:0 – NVMCMD[5:0]: Non-Volatile Memory Command
These bits define the programming commands for the flash, as shown in
Table 19-9.
• Bit 7 – NVMBSY: Non-Volatile Memory Busy
This bit indicates the NVM memory (Flash memory and Lock Bits) is busy, being programmed.
This bit is set when a program operation is started, and it remains set until the operation has
been completed.
• Bits 6:0 – Res: Reserved Bits
These bits are reserved and will always read as zero.
Bit
0x32
Read/Write
Initial Value
Operation Type
General
Section
Double Word
NVMBSY
NVM Programming commands
R/W
7
0
0b000000
0b010000
0b010100
0b011101
Binary
R
6
–
0
NVMCMD
R
5
–
0
0x1D
0x00
0x10
0x14
Hex
R
4
–
0
Mnemonic
NO_OPERATION
CHIP_ERASE
SECTION_ERASE
DWORD_WRITE
R
3
–
0
R
2
–
0
R
1
–
0
Description
No operation
Chip erase
Section erase
Write double word
Table
0
–
R
0
ATtiny20
19-9.
NVMCSR
171