ATTINY20-MMHR Atmel, ATTINY20-MMHR Datasheet - Page 171
ATTINY20-MMHR
Manufacturer Part Number
ATTINY20-MMHR
Description
MCU AVR 2KB FLASH 12MHZ 20QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY20-EK1.pdf
(224 pages)
Specifications of ATTINY20-MMHR
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATTINY20-MMHR
Manufacturer:
ATMEL
Quantity:
20 000
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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
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