ATTINY48-MMU Atmel, ATTINY48-MMU Datasheet - Page 197

• Manufacturer Part Number: ATTINY48-MMU
• Description: MCU AVR 5K FLASH 12MHZ 28-QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY48-MMU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 12MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 24
• 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 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Processor Series: ATTINY4x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: 2-Wire, I2S, SPI
• Maximum Clock Frequency: 12 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 6 Channel
• Package: 28VQFN EP
• Device Core: AVR
• Family Name: ATtiny
• Maximum Speed: 12 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• For Use With: ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVR
• 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