ATTINY4313-MU Atmel, ATTINY4313-MU Datasheet - Page 186

• Manufacturer Part Number: ATTINY4313-MU
• Description: IC MCU AVR 4K FLASH 20QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY4313-MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Processor Series: ATtiny
• Core: AVR
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI, USART, USI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 18
• Number Of Timers: 2
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Lead Free Status / Rohs Status: Details

20.6.5
186
ATtiny2313A/4313
Programming the EEPROM
Figure 20-2. Addressing the Flash Which is Organized in Pages
Note:
Figure 20-3. Programming the Flash Waveforms
Note:
The EEPROM is organized in pages, see
EEPROM, the program data is latched into a page buffer. This allows one page of data to be
programmed simultaneously. The programming algorithm for the EEPROM data memory is as
follows (refer to
Data loading):
3. Give XTAL1 a positive pulse. This loads the command, and the internal write signals
1. A: Load Command “0001 0001”.
2. G: Load Address High Byte (0x00 - 0xFF).
RESET +12V
are reset.
RDY/BSY
PAGEL
XTAL1
1. PCPAGE and PCWORD are listed in
1. “XX” is don’t care. The letters refer to the programming description above.
DATA
XA1
XA0
BS1
BS2
WR
OE
PROGRAM MEMORY
PROGRAM
COUNTER
0x10
PAGE
“Programming the Flash” on page 184
A
PAGE ADDRESS
WITHIN THE FLASH
ADDR. LOW
B
PCMSB
DATA LOW
C
PCPAGE
DATA HIGH
D
XX
E
PAGEMSB
ADDR. LOW
Table 20-8 on page
PCWORD
B
Table 20-7 on page
WORD ADDRESS
WITHIN A PAGE
DATA LOW
(1)
C
F
DATA HIGH
INSTRUCTION WORD
D
for details on Command, Address and
PAGE
XX
E
181.
(1)
181. When programming the
ADDR. HIGH
G
H
PCWORD[PAGEMSB:0]:
XX
00
01
02
PAGEEND
8246A–AVR–11/09