ATTINY48-AUR Atmel, ATTINY48-AUR Datasheet - Page 197

• Manufacturer Part Number: ATTINY48-AUR
• Description: MCU AVR 4KB FLASH 12MHZ 32TQFP
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY48-AUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 12MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 28
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Ram Size: 256 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

21.2.6
8008G–AVR–04/11
Reading the Flash
programmed simultaneously. The programming algorithm for the EEPROM data memory is as
follows (refer to
Data loading):
EEPROM programming waveforms are illustrated in
and letters refer to the programming steps described above.
Figure 21-4. Programming the EEPROM Waveforms
The algorithm for reading the Flash memory is as follows (see
194
RESET +12V
• A: Load command “0001 0001”
• G: Load address high byte (0x00 – 0xFF)
• B: Load address low byte (0x00 – 0xFF)
• C: Load data (0x00 – 0xFF)
• E: Latch data (give PAGEL a positive pulse)
• K: Repeat steps B, C, and E until the entire buffer is filled
• L: Program EEPROM page:
• A: Load command “0000 0010”
• G: Load address high byte (0x00 – 0xFF)
• B: Load address low byte (0x00 – 0xFF)
• Set OE to “0”, and BS1 to “0”. The Flash word low byte can now be read at DATA
RDY/BSY
PAGEL
for details on command and address loading):
DATA
CLKI
XA1
XA0
BS1
BS2
– Set BS1 to “0”
– Give WR a negative pulse. This starts programming of the EEPROM page.
– Wait until to RDY/BSY goes high before programming the next page (See
WR
OE
RDY/BSY goes low
4
for signal waveforms)
0x11
A
“Programming the Flash” on page 194
ADDR. HIGH
G
ADDR. LOW
B
DATA
C
XX
E
ADDR. LOW
B
Figure
for details on Command, Address and
DATA
C
K
21-4, where XX means “don’t care”
“Programming the Flash” on page
XX
E
ATtiny48/88
L
Figure 21-
197